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% texinfo.tex -- TeX macros to handle Texinfo files.
%
% Load plain if necessary, i.e., if running under initex.
\expandafter\ifx\csname
fmtname
\endcsname\relax\input
plain
\fi
%
\def\texinfoversion
{
2006-10-04.17
}
%
% Copyright (C) 1985, 1986, 1988, 1990, 1991, 1992, 1993, 1994, 1995,
% 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free
% Software Foundation, Inc.
%
% This texinfo.tex file is free software; you can redistribute it and/or
% modify it under the terms of the GNU General Public License as
% published by the Free Software Foundation; either version 2, or (at
% your option) any later version.
%
% This texinfo.tex file is distributed in the hope that it will be
% useful, but WITHOUT ANY WARRANTY; without even the implied warranty
% of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
% General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with this texinfo.tex file; see the file COPYING. If not, write
% to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
% Boston, MA 02110-1301, USA.
%
% As a special exception, when this file is read by TeX when processing
% a Texinfo source document, you may use the result without
% restriction. (This has been our intent since Texinfo was invented.)
%
% Please try the latest version of texinfo.tex before submitting bug
% reports; you can get the latest version from:
% http://www.gnu.org/software/texinfo/ (the Texinfo home page), or
% ftp://tug.org/tex/texinfo.tex
% (and all CTAN mirrors, see http://www.ctan.org).
% The texinfo.tex in any given distribution could well be out
% of date, so if that's what you're using, please check.
%
% Send bug reports to bug-texinfo@gnu.org. Please include including a
% complete document in each bug report with which we can reproduce the
% problem. Patches are, of course, greatly appreciated.
%
% To process a Texinfo manual with TeX, it's most reliable to use the
% texi2dvi shell script that comes with the distribution. For a simple
% manual foo.texi, however, you can get away with this:
% tex foo.texi
% texindex foo.??
% tex foo.texi
% tex foo.texi
% dvips foo.dvi -o # or whatever; this makes foo.ps.
% The extra TeX runs get the cross-reference information correct.
% Sometimes one run after texindex suffices, and sometimes you need more
% than two; texi2dvi does it as many times as necessary.
%
% It is possible to adapt texinfo.tex for other languages, to some
% extent. You can get the existing language-specific files from the
% full Texinfo distribution.
%
% The GNU Texinfo home page is http://www.gnu.org/software/texinfo.
\message
{
Loading texinfo [version
\texinfoversion
]:
}
% If in a .fmt file, print the version number
% and turn on active characters that we couldn't do earlier because
% they might have appeared in the input file name.
\everyjob
{
\message
{
[Texinfo version
\texinfoversion
]
}
%
\catcode
`+=
\active
\catcode
`
\_
=
\active
}
\message
{
Basics,
}
\chardef\other
=12
% We never want plain's \outer definition of \+ in Texinfo.
% For @tex, we can use \tabalign.
\let\+
=
\relax
% Save some plain tex macros whose names we will redefine.
\let\ptexb
=
\b
\let\ptexbullet
=
\bullet
\let\ptexc
=
\c
\let\ptexcomma
=
\,
\let\ptexdot
=
\.
\let\ptexdots
=
\dots
\let\ptexend
=
\end
\let\ptexequiv
=
\equiv
\let\ptexexclam
=
\!
\let\ptexfootnote
=
\footnote
\let\ptexgtr
=>
\let\ptexhat
=
^
\let\ptexi
=
\i
\let\ptexindent
=
\indent
\let\ptexinsert
=
\insert
\let\ptexlbrace
=
\{
\let\ptexless
=<
\let\ptexnewwrite\newwrite
\let\ptexnoindent
=
\noindent
\let\ptexplus
=+
\let\ptexrbrace
=
\}
\let\ptexslash
=
\/
\let\ptexstar
=
\*
\let\ptext
=
\t
% If this character appears in an error message or help string, it
% starts a new line in the output.
\newlinechar
= `
^^
J
% Use TeX 3.0's \inputlineno to get the line number, for better error
% messages, but if we're using an old version of TeX, don't do anything.
%
\ifx\inputlineno\thisisundefined
\let\linenumber
=
\empty
% Pre-3.0.
\else
\def\linenumber
{
l.
\the\inputlineno
:
\space
}
\fi
% Set up fixed words for English if not already set.
\ifx\putwordAppendix\undefined
\gdef\putwordAppendix
{
Appendix
}
\fi
\ifx\putwordChapter\undefined
\gdef\putwordChapter
{
Chapter
}
\fi
\ifx\putwordfile\undefined
\gdef\putwordfile
{
file
}
\fi
\ifx\putwordin\undefined
\gdef\putwordin
{
in
}
\fi
\ifx\putwordIndexIsEmpty\undefined
\gdef\putwordIndexIsEmpty
{
(Index is empty)
}
\fi
\ifx\putwordIndexNonexistent\undefined
\gdef\putwordIndexNonexistent
{
(Index is nonexistent)
}
\fi
\ifx\putwordInfo\undefined
\gdef\putwordInfo
{
Info
}
\fi
\ifx\putwordInstanceVariableof\undefined
\gdef\putwordInstanceVariableof
{
Instance Variable of
}
\fi
\ifx\putwordMethodon\undefined
\gdef\putwordMethodon
{
Method on
}
\fi
\ifx\putwordNoTitle\undefined
\gdef\putwordNoTitle
{
No Title
}
\fi
\ifx\putwordof\undefined
\gdef\putwordof
{
of
}
\fi
\ifx\putwordon\undefined
\gdef\putwordon
{
on
}
\fi
\ifx\putwordpage\undefined
\gdef\putwordpage
{
page
}
\fi
\ifx\putwordsection\undefined
\gdef\putwordsection
{
section
}
\fi
\ifx\putwordSection\undefined
\gdef\putwordSection
{
Section
}
\fi
\ifx\putwordsee\undefined
\gdef\putwordsee
{
see
}
\fi
\ifx\putwordSee\undefined
\gdef\putwordSee
{
See
}
\fi
\ifx\putwordShortTOC\undefined
\gdef\putwordShortTOC
{
Short Contents
}
\fi
\ifx\putwordTOC\undefined
\gdef\putwordTOC
{
Table of Contents
}
\fi
%
\ifx\putwordMJan\undefined
\gdef\putwordMJan
{
January
}
\fi
\ifx\putwordMFeb\undefined
\gdef\putwordMFeb
{
February
}
\fi
\ifx\putwordMMar\undefined
\gdef\putwordMMar
{
March
}
\fi
\ifx\putwordMApr\undefined
\gdef\putwordMApr
{
April
}
\fi
\ifx\putwordMMay\undefined
\gdef\putwordMMay
{
May
}
\fi
\ifx\putwordMJun\undefined
\gdef\putwordMJun
{
June
}
\fi
\ifx\putwordMJul\undefined
\gdef\putwordMJul
{
July
}
\fi
\ifx\putwordMAug\undefined
\gdef\putwordMAug
{
August
}
\fi
\ifx\putwordMSep\undefined
\gdef\putwordMSep
{
September
}
\fi
\ifx\putwordMOct\undefined
\gdef\putwordMOct
{
October
}
\fi
\ifx\putwordMNov\undefined
\gdef\putwordMNov
{
November
}
\fi
\ifx\putwordMDec\undefined
\gdef\putwordMDec
{
December
}
\fi
%
\ifx\putwordDefmac\undefined
\gdef\putwordDefmac
{
Macro
}
\fi
\ifx\putwordDefspec\undefined
\gdef\putwordDefspec
{
Special Form
}
\fi
\ifx\putwordDefvar\undefined
\gdef\putwordDefvar
{
Variable
}
\fi
\ifx\putwordDefopt\undefined
\gdef\putwordDefopt
{
User Option
}
\fi
\ifx\putwordDeffunc\undefined
\gdef\putwordDeffunc
{
Function
}
\fi
% Since the category of space is not known, we have to be careful.
\chardef\spacecat
= 10
\def\spaceisspace
{
\catcode
`
\
=
\spacecat
}
% sometimes characters are active, so we need control sequences.
\chardef\colonChar
= `
\:
\chardef\commaChar
= `
\,
\chardef\dashChar
= `
\-
\chardef\dotChar
= `
\.
\chardef\exclamChar
= `
\!
\chardef\lquoteChar
= `
\`
\chardef\questChar
= `
\?
\chardef\rquoteChar
= `
\'
\chardef\semiChar
= `
\;
\chardef\underChar
= `
\_
% Ignore a token.
%
\def\gobble
#1
{}
% The following is used inside several \edef's.
\def\makecsname
#1
{
\expandafter\noexpand\csname
#1
\endcsname
}
% Hyphenation fixes.
\hyphenation
{
Flor-i-da Ghost-script Ghost-view Mac-OS Post-Script
ap-pen-dix bit-map bit-maps
data-base data-bases eshell fall-ing half-way long-est man-u-script
man-u-scripts mini-buf-fer mini-buf-fers over-view par-a-digm
par-a-digms rath-er rec-tan-gu-lar ro-bot-ics se-vere-ly set-up spa-ces
spell-ing spell-ings
stand-alone strong-est time-stamp time-stamps which-ever white-space
wide-spread wrap-around
}
% Margin to add to right of even pages, to left of odd pages.
\newdimen\bindingoffset
\newdimen\normaloffset
\newdimen\pagewidth
\newdimen\pageheight
% For a final copy, take out the rectangles
% that mark overfull boxes (in case you have decided
% that the text looks ok even though it passes the margin).
%
\def\finalout
{
\overfullrule
=0pt
}
% @| inserts a changebar to the left of the current line. It should
% surround any changed text. This approach does *not* work if the
% change spans more than two lines of output. To handle that, we would
% have adopt a much more difficult approach (putting marks into the main
% vertical list for the beginning and end of each change).
%
\def\|
{
%
% \vadjust can only be used in horizontal mode.
\leavevmode
%
% Append this vertical mode material after the current line in the output.
\vadjust
{
%
% We want to insert a rule with the height and depth of the current
% leading; that is exactly what \strutbox is supposed to record.
\vskip
-
\baselineskip
%
% \vadjust-items are inserted at the left edge of the type. So
% the \llap here moves out into the left-hand margin.
\llap
{
%
%
% For a thicker or thinner bar, change the `1pt'.
\vrule
height
\baselineskip
width1pt
%
% This is the space between the bar and the text.
\hskip
12pt
}
%
}
%
}
% Sometimes it is convenient to have everything in the transcript file
% and nothing on the terminal. We don't just call \tracingall here,
% since that produces some useless output on the terminal. We also make
% some effort to order the tracing commands to reduce output in the log
% file; cf. trace.sty in LaTeX.
%
\def\gloggingall
{
\begingroup
\globaldefs
= 1
\loggingall
\endgroup
}
%
\def\loggingall
{
%
\tracingstats
2
\tracingpages
1
\tracinglostchars
2
% 2 gives us more in etex
\tracingparagraphs
1
\tracingoutput
1
\tracingmacros
2
\tracingrestores
1
\showboxbreadth\maxdimen
\showboxdepth\maxdimen
\ifx\eTeXversion\undefined\else
% etex gives us more logging
\tracingscantokens
1
\tracingifs
1
\tracinggroups
1
\tracingnesting
2
\tracingassigns
1
\fi
\tracingcommands
3
% 3 gives us more in etex
\errorcontextlines
16
}
%
% add check for \lastpenalty to plain's definitions. If the last thing
% we did was a \nobreak, we don't want to insert more space.
%
\def\smallbreak
{
\ifnum\lastpenalty
<10000
\par\ifdim\lastskip
<
\smallskipamount
\removelastskip\penalty
-50
\smallskip\fi\fi
}
\def\medbreak
{
\ifnum\lastpenalty
<10000
\par\ifdim\lastskip
<
\medskipamount
\removelastskip\penalty
-100
\medskip\fi\fi
}
\def\bigbreak
{
\ifnum\lastpenalty
<10000
\par\ifdim\lastskip
<
\bigskipamount
\removelastskip\penalty
-200
\bigskip\fi\fi
}
% For @cropmarks command.
% Do @cropmarks to get crop marks.
%
\newif\ifcropmarks
\let\cropmarks
=
\cropmarkstrue
%
% Dimensions to add cropmarks at corners.
% Added by P. A. MacKay, 12 Nov. 1986
%
\newdimen\outerhsize
\newdimen\outervsize
% set by the paper size routines
\newdimen\cornerlong
\cornerlong
=1pc
\newdimen\cornerthick
\cornerthick
=.3pt
\newdimen\topandbottommargin
\topandbottommargin
=.75in
% Main output routine.
\chardef\PAGE
= 255
\output
=
{
\onepageout
{
\pagecontents\PAGE
}}
\newbox\headlinebox
\newbox\footlinebox
% \onepageout takes a vbox as an argument. Note that \pagecontents
% does insertions, but you have to call it yourself.
\def\onepageout
#1
{
%
\ifcropmarks
\hoffset
=0pt
\else
\hoffset
=
\normaloffset
\fi
%
\ifodd\pageno
\advance\hoffset
by
\bindingoffset
\else
\advance\hoffset
by -
\bindingoffset\fi
%
% Do this outside of the \shipout so @code etc. will be expanded in
% the headline as they should be, not taken literally (outputting ''code).
\setbox\headlinebox
=
\vbox
{
\let\hsize
=
\pagewidth
\makeheadline
}
%
\setbox\footlinebox
=
\vbox
{
\let\hsize
=
\pagewidth
\makefootline
}
%
%
{
%
% Have to do this stuff outside the \shipout because we want it to
% take effect in \write's, yet the group defined by the \vbox ends
% before the \shipout runs.
%
\indexdummies
% don't expand commands in the output.
\normalturnoffactive
% \ in index entries must not stay \, e.g., if
% the page break happens to be in the middle of an example.
% We don't want .vr (or whatever) entries like this:
% \entry{{\tt \indexbackslash }acronym}{32}{\code {\acronym}}
% "\acronym" won't work when it's read back in;
% it needs to be
% {\code {{\tt \backslashcurfont }acronym}
\shipout\vbox
{
%
% Do this early so pdf references go to the beginning of the page.
\ifpdfmakepagedest
\pdfdest
name
{
\the\pageno
}
xyz
\fi
%
\ifcropmarks
\vbox
to
\outervsize\bgroup
\hsize
=
\outerhsize
\vskip
-
\topandbottommargin
\vtop
to0pt
{
%
\line
{
\ewtop\hfil\ewtop
}
%
\nointerlineskip
\line
{
%
\vbox
{
\moveleft\cornerthick\nstop
}
%
\hfill
\vbox
{
\moveright\cornerthick\nstop
}
%
}
%
\vss
}
%
\vskip\topandbottommargin
\line\bgroup
\hfil
% center the page within the outer (page) hsize.
\ifodd\pageno\hskip\bindingoffset\fi
\vbox\bgroup
\fi
%
\unvbox\headlinebox
\pagebody
{
#1
}
%
\ifdim\ht\footlinebox
> 0pt
% Only leave this space if the footline is nonempty.
% (We lessened \vsize for it in \oddfootingyyy.)
% The \baselineskip=24pt in plain's \makefootline has no effect.
\vskip
24pt
\unvbox\footlinebox
\fi
%
\ifcropmarks
\egroup
% end of \vbox\bgroup
\hfil\egroup
% end of (centering) \line\bgroup
\vskip\topandbottommargin
plus1fill minus1fill
\boxmaxdepth
=
\cornerthick
\vbox
to0pt
{
\vss
\line
{
%
\vbox
{
\moveleft\cornerthick\nsbot
}
%
\hfill
\vbox
{
\moveright\cornerthick\nsbot
}
%
}
%
\nointerlineskip
\line
{
\ewbot\hfil\ewbot
}
%
}
%
\egroup
% \vbox from first cropmarks clause
\fi
}
% end of \shipout\vbox
}
% end of group with \indexdummies
\advancepageno
\ifnum\outputpenalty
>-20000
\else\dosupereject\fi
}
\newinsert\margin
\dimen\margin
=
\maxdimen
\def\pagebody
#1
{
\vbox
to
\pageheight
{
\boxmaxdepth
=
\maxdepth
#1
}}
{
\catcode
`
\@
=11
\gdef\pagecontents
#1
{
\ifvoid\topins\else\unvbox\topins\fi
% marginal hacks, juha@viisa.uucp (Juha Takala)
\ifvoid\margin\else
% marginal info is present
\rlap
{
\kern\hsize\vbox
to
\z
@
{
\kern
1pt
\box\margin
\vss
}}
\fi
\dimen
@=
\dp
#1
\unvbox
#1
\ifvoid\footins\else\vskip\skip\footins\footnoterule
\unvbox\footins\fi
\ifr
@ggedbottom
\kern
-
\dimen
@
\vfil
\fi
}
}
% Here are the rules for the cropmarks. Note that they are
% offset so that the space between them is truly \outerhsize or \outervsize
% (P. A. MacKay, 12 November, 1986)
%
\def\ewtop
{
\vrule
height
\cornerthick
depth0pt width
\cornerlong
}
\def\nstop
{
\vbox
{
\hrule
height
\cornerthick
depth
\cornerlong
width
\cornerthick
}}
\def\ewbot
{
\vrule
height0pt depth
\cornerthick
width
\cornerlong
}
\def\nsbot
{
\vbox
{
\hrule
height
\cornerlong
depth
\cornerthick
width
\cornerthick
}}
% Parse an argument, then pass it to #1. The argument is the rest of
% the input line (except we remove a trailing comment). #1 should be a
% macro which expects an ordinary undelimited TeX argument.
%
\def\parsearg
{
\parseargusing
{}}
\def\parseargusing
#1#2
{
%
\def\argtorun
{
#2
}
%
\begingroup
\obeylines
\spaceisspace
#1
%
\parseargline\empty
% Insert the \empty token, see \finishparsearg below.
}
{
\obeylines
%
\gdef\parseargline
#1
^^
M
{
%
\endgroup
% End of the group started in \parsearg.
\argremovecomment
#1
\comment\ArgTerm
%
}
%
}
% First remove any @comment, then any @c comment.
\def\argremovecomment
#1
\comment
#2
\ArgTerm
{
\argremovec
#1
\c\ArgTerm
}
\def\argremovec
#1
\c
#2
\ArgTerm
{
\argcheckspaces
#1
\^
^
M
\ArgTerm
}
% Each occurence of `\^^M' or `<space>\^^M' is replaced by a single space.
%
% \argremovec might leave us with trailing space, e.g.,
% @end itemize @c foo
% This space token undergoes the same procedure and is eventually removed
% by \finishparsearg.
%
\def\argcheckspaces
#1
\^
^
M
{
\argcheckspacesX
#1
\^
^
M
\^
^
M
}
\def\argcheckspacesX
#1
\^
^
M
{
\argcheckspacesY
#1
\^
^
M
}
\def\argcheckspacesY
#1
\^
^
M#2
\^
^
M#3
\ArgTerm
{
%
\def\temp
{
#3
}
%
\ifx\temp\empty
% Do not use \next, perhaps the caller of \parsearg uses it; reuse \temp:
\let\temp\finishparsearg
\else
\let\temp\argcheckspaces
\fi
% Put the space token in:
\temp
#1 #3
\ArgTerm
}
% If a _delimited_ argument is enclosed in braces, they get stripped; so
% to get _exactly_ the rest of the line, we had to prevent such situation.
% We prepended an \empty token at the very beginning and we expand it now,
% just before passing the control to \argtorun.
% (Similarily, we have to think about #3 of \argcheckspacesY above: it is
% either the null string, or it ends with \^^M---thus there is no danger
% that a pair of braces would be stripped.
%
% But first, we have to remove the trailing space token.
%
\def\finishparsearg
#1
\ArgTerm
{
\expandafter\argtorun\expandafter
{
#1
}}
% \parseargdef\foo{...}
% is roughly equivalent to
% \def\foo{\parsearg\Xfoo}
% \def\Xfoo#1{...}
%
% Actually, I use \csname\string\foo\endcsname, ie. \\foo, as it is my
% favourite TeX trick. --kasal, 16nov03
\def\parseargdef
#1
{
%
\expandafter
\doparseargdef
\csname\string
#1
\endcsname
#1
%
}
\def\doparseargdef
#1#2
{
%
\def
#2
{
\parsearg
#1
}
%
\def
#1##1
%
}
% Several utility definitions with active space:
{
\obeyspaces
\gdef\obeyedspace
{
}
% Make each space character in the input produce a normal interword
% space in the output. Don't allow a line break at this space, as this
% is used only in environments like @example, where each line of input
% should produce a line of output anyway.
%
\gdef\sepspaces
{
\obeyspaces\let
=
\tie
}
% If an index command is used in an @example environment, any spaces
% therein should become regular spaces in the raw index file, not the
% expansion of \tie (\leavevmode \penalty \@M \ ).
\gdef\unsepspaces
{
\let
=
\space
}
}
\def\flushcr
{
\ifx\par\lisppar
\def\next
##1
{}
\else
\let\next
=
\relax
\fi
\next
}
% Define the framework for environments in texinfo.tex. It's used like this:
%
% \envdef\foo{...}
% \def\Efoo{...}
%
% It's the responsibility of \envdef to insert \begingroup before the
% actual body; @end closes the group after calling \Efoo. \envdef also
% defines \thisenv, so the current environment is known; @end checks
% whether the environment name matches. The \checkenv macro can also be
% used to check whether the current environment is the one expected.
%
% Non-false conditionals (@iftex, @ifset) don't fit into this, so they
% are not treated as enviroments; they don't open a group. (The
% implementation of @end takes care not to call \endgroup in this
% special case.)
% At runtime, environments start with this:
\def\startenvironment
#1
{
\begingroup\def\thisenv
{
#1
}}
% initialize
\let\thisenv\empty
% ... but they get defined via ``\envdef\foo{...}'':
\long\def\envdef
#1#2
{
\def
#1
{
\startenvironment
#1#2
}}
\def\envparseargdef
#1#2
{
\parseargdef
#1
{
\startenvironment
#1#2
}}
% Check whether we're in the right environment:
\def\checkenv
#1
{
%
\def\temp
{
#1
}
%
\ifx\thisenv\temp
\else
\badenverr
\fi
}
% Evironment mismatch, #1 expected:
\def\badenverr
{
%
\errhelp
=
\EMsimple
\errmessage
{
This command can appear only
\inenvironment\temp
,
not
\inenvironment\thisenv
}
%
}
\def\inenvironment
#1
{
%
\ifx
#1
\empty
out of any environment
%
\else
in environment
\expandafter\string
#1
%
\fi
}
% @end foo executes the definition of \Efoo.
% But first, it executes a specialized version of \checkenv
%
\parseargdef\end
{
%
\if
1
\csname
iscond.#1
\endcsname
\else
% The general wording of \badenverr may not be ideal, but... --kasal, 06nov03
\expandafter\checkenv\csname
#1
\endcsname
\csname
E#1
\endcsname
\endgroup
\fi
}
\newhelp\EMsimple
{
Press RETURN to continue.
}
%% Simple single-character @ commands
% @@ prints an @
% Kludge this until the fonts are right (grr).
\def\@
{{
\tt\char
64
}}
% This is turned off because it was never documented
% and you can use @w{...} around a quote to suppress ligatures.
%% Define @` and @' to be the same as ` and '
%% but suppressing ligatures.
%\def\`{{`}}
%\def\'{{'}}
% Used to generate quoted braces.
\def\mylbrace
{{
\tt\char
123
}}
\def\myrbrace
{{
\tt\char
125
}}
\let\{
=
\mylbrace
\let\}
=
\myrbrace
\begingroup
% Definitions to produce \{ and \} commands for indices,
% and @{ and @} for the aux/toc files.
\catcode
`
\{
=
\other
\catcode
`
\}
=
\other
\catcode
`
\[
=
1
\catcode
`
\]
= 2
\catcode
`
\!
= 0
\catcode
`
\\
=
\other
!gdef!lbracecmd[
\{
]
%
!gdef!rbracecmd[
\}
]
%
!gdef!lbraceatcmd[@
{
]
%
!gdef!rbraceatcmd[@
}
]
%
!endgroup
% @comma{} to avoid , parsing problems.
\let\comma
= ,
% Accents: @, @dotaccent @ringaccent @ubaraccent @udotaccent
% Others are defined by plain TeX: @` @' @" @^ @~ @= @u @v @H.
\let\,
=
\c
\let\dotaccent
=
\.
\def\ringaccent
#1
{{
\accent
23 #1
}}
\let\tieaccent
=
\t
\let\ubaraccent
=
\b
\let\udotaccent
=
\d
% Other special characters: @questiondown @exclamdown @ordf @ordm
% Plain TeX defines: @AA @AE @O @OE @L (plus lowercase versions) @ss.
\def\questiondown
{
?`
}
\def\exclamdown
{
!`
}
\def\ordf
{
\leavevmode\raise
1ex
\hbox
{
\selectfonts\lllsize
\underbar
{
a
}}}
\def\ordm
{
\leavevmode\raise
1ex
\hbox
{
\selectfonts\lllsize
\underbar
{
o
}}}
% Dotless i and dotless j, used for accents.
\def\imacro
{
i
}
\def\jmacro
{
j
}
\def\dotless
#1
{
%
\def\temp
{
#1
}
%
\ifx\temp\imacro
\ptexi
\else\ifx\temp\jmacro
\j
\else
\errmessage
{
@dotless can be used only with i or j
}
%
\fi\fi
}
% The \TeX{} logo, as in plain, but resetting the spacing so that a
% period following counts as ending a sentence. (Idea found in latex.)
%
\edef\TeX
{
\TeX
\spacefactor
=1000
}
% @LaTeX{} logo. Not quite the same results as the definition in
% latex.ltx, since we use a different font for the raised A; it's most
% convenient for us to use an explicitly smaller font, rather than using
% the \scriptstyle font (since we don't reset \scriptstyle and
% \scriptscriptstyle).
%
\def\LaTeX
{
%
L
\kern
-.36em
{
\setbox
0=
\hbox
{
T
}
%
\vbox
to
\ht
0
{
\hbox
{
\selectfonts\lllsize
A
}
\vss
}}
%
\kern
-.15em
\TeX
}
% Be sure we're in horizontal mode when doing a tie, since we make space
% equivalent to this in @example-like environments. Otherwise, a space
% at the beginning of a line will start with \penalty -- and
% since \penalty is valid in vertical mode, we'd end up putting the
% penalty on the vertical list instead of in the new paragraph.
{
\catcode
`@ = 11
% Avoid using \@M directly, because that causes trouble
% if the definition is written into an index file.
\global\let\tiepenalty
=
\@
M
\gdef\tie
{
\leavevmode\penalty\tiepenalty\
}
}
% @: forces normal size whitespace following.
\def\:
{
\spacefactor
=1000
}
% @* forces a line break.
\def\*
{
\hfil\break\hbox
{}
\ignorespaces
}
% @/ allows a line break.
\let\/
=
\allowbreak
% @. is an end-of-sentence period.
\def\.
{
.
\spacefactor
=
\endofsentencespacefactor\space
}
% @! is an end-of-sentence bang.
\def\!
{
!
\spacefactor
=
\endofsentencespacefactor\space
}
% @? is an end-of-sentence query.
\def\?
{
?
\spacefactor
=
\endofsentencespacefactor\space
}
% @frenchspacing on|off says whether to put extra space after punctuation.
%
\def\onword
{
on
}
\def\offword
{
off
}
%
\parseargdef\frenchspacing
{
%
\def\temp
{
#1
}
%
\ifx\temp\onword
\plainfrenchspacing
\else\ifx\temp\offword
\plainnonfrenchspacing
\else
\errhelp
=
\EMsimple
\errmessage
{
Unknown @frenchspacing option `
\temp
', must be on/off
}
%
\fi\fi
}
% @w prevents a word break. Without the \leavevmode, @w at the
% beginning of a paragraph, when TeX is still in vertical mode, would
% produce a whole line of output instead of starting the paragraph.
\def\w
#1
{
\leavevmode\hbox
{
#1
}}
% @group ... @end group forces ... to be all on one page, by enclosing
% it in a TeX vbox. We use \vtop instead of \vbox to construct the box
% to keep its height that of a normal line. According to the rules for
% \topskip (p.114 of the TeXbook), the glue inserted is
% max (\topskip - \ht (first item), 0). If that height is large,
% therefore, no glue is inserted, and the space between the headline and
% the text is small, which looks bad.
%
% Another complication is that the group might be very large. This can
% cause the glue on the previous page to be unduly stretched, because it
% does not have much material. In this case, it's better to add an
% explicit \vfill so that the extra space is at the bottom. The
% threshold for doing this is if the group is more than \vfilllimit
% percent of a page (\vfilllimit can be changed inside of @tex).
%
\newbox\groupbox
\def\vfilllimit
{
0.7
}
%
\envdef\group
{
%
\ifnum\catcode
`
\^
^
M=
\active
\else
\errhelp
=
\groupinvalidhelp
\errmessage
{
@group invalid in context where filling is enabled
}
%
\fi
\startsavinginserts
%
\setbox\groupbox
=
\vtop\bgroup
% Do @comment since we are called inside an environment such as
% @example, where each end-of-line in the input causes an
% end-of-line in the output. We don't want the end-of-line after
% the `@group' to put extra space in the output. Since @group
% should appear on a line by itself (according to the Texinfo
% manual), we don't worry about eating any user text.
\comment
}
%
% The \vtop produces a box with normal height and large depth; thus, TeX puts
% \baselineskip glue before it, and (when the next line of text is done)
% \lineskip glue after it. Thus, space below is not quite equal to space
% above. But it's pretty close.
\def\Egroup
{
%
% To get correct interline space between the last line of the group
% and the first line afterwards, we have to propagate \prevdepth.
\endgraf
% Not \par, as it may have been set to \lisppar.
\global\dimen
1 =
\prevdepth
\egroup
% End the \vtop.
% \dimen0 is the vertical size of the group's box.
\dimen
0 =
\ht\groupbox
\advance\dimen
0 by
\dp\groupbox
% \dimen2 is how much space is left on the page (more or less).
\dimen
2 =
\pageheight
\advance\dimen
2 by -
\pagetotal
% if the group doesn't fit on the current page, and it's a big big
% group, force a page break.
\ifdim
\dimen
0 >
\dimen
2
\ifdim
\pagetotal
<
\vfilllimit\pageheight
\page
\fi
\fi
\box\groupbox
\prevdepth
=
\dimen
1
\checkinserts
}
%
% TeX puts in an \escapechar (i.e., `@') at the beginning of the help
% message, so this ends up printing `@group can only ...'.
%
\newhelp\groupinvalidhelp
{
%
group can only be used in environments such as @example,
^^
J
%
where each line of input produces a line of output.
}
% @need space-in-mils
% forces a page break if there is not space-in-mils remaining.
\newdimen\mil
\mil
=0.001in
% Old definition--didn't work.
%\parseargdef\need{\par %
%% This method tries to make TeX break the page naturally
%% if the depth of the box does not fit.
%{\baselineskip=0pt%
%\vtop to #1\mil{\vfil}\kern -#1\mil\nobreak
%\prevdepth=-1000pt
%}}
\parseargdef\need
{
%
% Ensure vertical mode, so we don't make a big box in the middle of a
% paragraph.
\par
%
% If the @need value is less than one line space, it's useless.
\dimen
0 = #1
\mil
\dimen
2 =
\ht\strutbox
\advance\dimen
2 by
\dp\strutbox
\ifdim\dimen
0 >
\dimen
2
%
% Do a \strut just to make the height of this box be normal, so the
% normal leading is inserted relative to the preceding line.
% And a page break here is fine.
\vtop
to #1
\mil
{
\strut\vfil
}
%
%
% TeX does not even consider page breaks if a penalty added to the
% main vertical list is 10000 or more. But in order to see if the
% empty box we just added fits on the page, we must make it consider
% page breaks. On the other hand, we don't want to actually break the
% page after the empty box. So we use a penalty of 9999.
%
% There is an extremely small chance that TeX will actually break the
% page at this \penalty, if there are no other feasible breakpoints in
% sight. (If the user is using lots of big @group commands, which
% almost-but-not-quite fill up a page, TeX will have a hard time doing
% good page breaking, for example.) However, I could not construct an
% example where a page broke at this \penalty; if it happens in a real
% document, then we can reconsider our strategy.
\penalty
9999
%
% Back up by the size of the box, whether we did a page break or not.
\kern
-#1
\mil
%
% Do not allow a page break right after this kern.
\nobreak
\fi
}
% @br forces paragraph break (and is undocumented).
\let\br
=
\par
% @page forces the start of a new page.
%
\def\page
{
\par\vfill\supereject
}
% @exdent text....
% outputs text on separate line in roman font, starting at standard page margin
% This records the amount of indent in the innermost environment.
% That's how much \exdent should take out.
\newskip\exdentamount
% This defn is used inside fill environments such as @defun.
\parseargdef\exdent
{
\hfil\break\hbox
{
\kern
-
\exdentamount
{
\rm
#1
}}
\hfil\break
}
% This defn is used inside nofill environments such as @example.
\parseargdef\nofillexdent
{{
\advance
\leftskip
by -
\exdentamount
\leftline
{
\hskip\leftskip
{
\rm
#1
}}}}
% @inmargin{WHICH}{TEXT} puts TEXT in the WHICH margin next to the current
% paragraph. For more general purposes, use the \margin insertion
% class. WHICH is `l' or `r'.
%
\newskip\inmarginspacing
\inmarginspacing
=1cm
\def\strutdepth
{
\dp\strutbox
}
%
\def\doinmargin
#1#2
{
\strut\vadjust
{
%
\nobreak
\kern
-
\strutdepth
\vtop
to
\strutdepth
{
%
\baselineskip
=
\strutdepth
\vss
% if you have multiple lines of stuff to put here, you'll need to
% make the vbox yourself of the appropriate size.
\ifx
#1l
%
\llap
{
\ignorespaces
#2
\hskip\inmarginspacing
}
%
\else
\rlap
{
\hskip\hsize
\hskip\inmarginspacing
\ignorespaces
#2
}
%
\fi
\null
}
%
}}
\def\inleftmargin
{
\doinmargin
l
}
\def\inrightmargin
{
\doinmargin
r
}
%
% @inmargin{TEXT [, RIGHT-TEXT]}
% (if RIGHT-TEXT is given, use TEXT for left page, RIGHT-TEXT for right;
% else use TEXT for both).
%
\def\inmargin
#1
{
\parseinmargin
#1,,
\finish
}
\def\parseinmargin
#1,#2,#3
\finish
{
% not perfect, but better than nothing.
\setbox
0 =
\hbox
{
\ignorespaces
#2
}
%
\ifdim\wd
0 > 0pt
\def\lefttext
{
#1
}
% have both texts
\def\righttext
{
#2
}
%
\else
\def\lefttext
{
#1
}
% have only one text
\def\righttext
{
#1
}
%
\fi
%
\ifodd\pageno
\def\temp
{
\inrightmargin\righttext
}
% odd page -> outside is right margin
\else
\def\temp
{
\inleftmargin\lefttext
}
%
\fi
\temp
}
% @include file insert text of that file as input.
%
\def\include
{
\parseargusing\filenamecatcodes\includezzz
}
\def\includezzz
#1
{
%
\pushthisfilestack
\def\thisfile
{
#1
}
%
{
%
\makevalueexpandable
\def\temp
{
\input
#1
}
%
\expandafter
}
\temp
\popthisfilestack
}
\def\filenamecatcodes
{
%
\catcode
`
\\
=
\other
\catcode
`~=
\other
\catcode
`
^
=
\other
\catcode
`
_
=
\other
\catcode
`|=
\other
\catcode
`<=
\other
\catcode
`>=
\other
\catcode
`+=
\other
\catcode
`-=
\other
}
\def\pushthisfilestack
{
%
\expandafter\pushthisfilestackX\popthisfilestack\StackTerm
}
\def\pushthisfilestackX
{
%
\expandafter\pushthisfilestackY\thisfile\StackTerm
}
\def\pushthisfilestackY
#1
\StackTerm
#2
\StackTerm
{
%
\gdef\popthisfilestack
{
\gdef\thisfile
{
#1
}
\gdef\popthisfilestack
{
#2
}}
%
}
\def\popthisfilestack
{
\errthisfilestackempty
}
\def\errthisfilestackempty
{
\errmessage
{
Internal error:
the stack of filenames is empty.
}}
\def\thisfile
{}
% @center line
% outputs that line, centered.
%
\parseargdef\center
{
%
\ifhmode
\let\next\centerH
\else
\let\next\centerV
\fi
\next
{
\hfil
\ignorespaces
#1
\unskip
\hfil
}
%
}
\def\centerH
#1
{
%
{
%
\hfil\break
\advance\hsize
by -
\leftskip
\advance\hsize
by -
\rightskip
\line
{
#1
}
%
\break
}
%
}
\def\centerV
#1
{
\line
{
\kern\leftskip
#1
\kern\rightskip
}}
% @sp n outputs n lines of vertical space
\parseargdef\sp
{
\vskip
#1
\baselineskip
}
% @comment ...line which is ignored...
% @c is the same as @comment
% @ignore ... @end ignore is another way to write a comment
\def\comment
{
\begingroup
\catcode
`
\^
^
M=
\other
%
\catcode
`
\@
=
\other
\catcode
`
\{
=
\other
\catcode
`
\}
=
\other
%
\commentxxx
}
{
\catcode
`
\^
^
M=
\other
\gdef\commentxxx
#1
^^
M
{
\endgroup
}}
\let\c
=
\comment
% @paragraphindent NCHARS
% We'll use ems for NCHARS, close enough.
% NCHARS can also be the word `asis' or `none'.
% We cannot feasibly implement @paragraphindent asis, though.
%
\def\asisword
{
asis
}
% no translation, these are keywords
\def\noneword
{
none
}
%
\parseargdef\paragraphindent
{
%
\def\temp
{
#1
}
%
\ifx\temp\asisword
\else
\ifx\temp\noneword
\defaultparindent
= 0pt
\else
\defaultparindent
= #1em
\fi
\fi
\parindent
=
\defaultparindent
}
% @exampleindent NCHARS
% We'll use ems for NCHARS like @paragraphindent.
% It seems @exampleindent asis isn't necessary, but
% I preserve it to make it similar to @paragraphindent.
\parseargdef\exampleindent
{
%
\def\temp
{
#1
}
%
\ifx\temp\asisword
\else
\ifx\temp\noneword
\lispnarrowing
= 0pt
\else
\lispnarrowing
= #1em
\fi
\fi
}
% @firstparagraphindent WORD
% If WORD is `none', then suppress indentation of the first paragraph
% after a section heading. If WORD is `insert', then do indent at such
% paragraphs.
%
% The paragraph indentation is suppressed or not by calling
% \suppressfirstparagraphindent, which the sectioning commands do.
% We switch the definition of this back and forth according to WORD.
% By default, we suppress indentation.
%
\def\suppressfirstparagraphindent
{
\dosuppressfirstparagraphindent
}
\def\insertword
{
insert
}
%
\parseargdef\firstparagraphindent
{
%
\def\temp
{
#1
}
%
\ifx\temp\noneword
\let\suppressfirstparagraphindent
=
\dosuppressfirstparagraphindent
\else\ifx\temp\insertword
\let\suppressfirstparagraphindent
=
\relax
\else
\errhelp
=
\EMsimple
\errmessage
{
Unknown @firstparagraphindent option `
\temp
'
}
%
\fi\fi
}
% Here is how we actually suppress indentation. Redefine \everypar to
% \kern backwards by \parindent, and then reset itself to empty.
%
% We also make \indent itself not actually do anything until the next
% paragraph.
%
\gdef\dosuppressfirstparagraphindent
{
%
\gdef\indent
{
%
\restorefirstparagraphindent
\indent
}
%
\gdef\noindent
{
%
\restorefirstparagraphindent
\noindent
}
%
\global\everypar
=
{
%
\kern
-
\parindent
\restorefirstparagraphindent
}
%
}
\gdef\restorefirstparagraphindent
{
%
\global
\let
\indent
=
\ptexindent
\global
\let
\noindent
=
\ptexnoindent
\global
\everypar
=
{}
%
}
% @asis just yields its argument. Used with @table, for example.
%
\def\asis
#1
{
#1
}
% @math outputs its argument in math mode.
%
% One complication: _ usually means subscripts, but it could also mean
% an actual _ character, as in @math{@var{some_variable} + 1}. So make
% _ active, and distinguish by seeing if the current family is \slfam,
% which is what @var uses.
{
\catcode
`
\_
=
\active
\gdef\mathunderscore
{
%
\catcode
`
\_
=
\active
\def
_{
\ifnum\fam
=
\slfam
\_\else\sb\fi
}
%
}
}
% Another complication: we want \\ (and @\) to output a \ character.
% FYI, plain.tex uses \\ as a temporary control sequence (why?), but
% this is not advertised and we don't care. Texinfo does not
% otherwise define @\.
%
% The \mathchar is class=0=ordinary, family=7=ttfam, position=5C=\.
\def\mathbackslash
{
\ifnum\fam
=
\ttfam
\mathchar
"075C
\else\backslash
\fi
}
%
\def\math
{
%
\tex
\mathunderscore
\let\\
=
\mathbackslash
\mathactive
$
\finishmath
}
\def\finishmath
#
1
{#
1
$
\endgroup
}
% Close the group opened by \tex.
% Some active characters (such as <) are spaced differently in math.
% We have to reset their definitions in case the @math was an argument
% to a command which sets the catcodes (such as @item or @section).
%
{
\catcode
`
^
=
\active
\catcode
`< =
\active
\catcode
`> =
\active
\catcode
`+ =
\active
\gdef\mathactive
{
%
\let
^
=
\ptexhat
\let
< =
\ptexless
\let
> =
\ptexgtr
\let
+ =
\ptexplus
}
}
% @bullet and @minus need the same treatment as @math, just above.
\def\bullet
{
$
\ptexbullet
$
}
\def\minus
{
$
-
$
}
% @dots{} outputs an ellipsis using the current font.
% We do .5em per period so that it has the same spacing in the cm
% typewriter fonts as three actual period characters; on the other hand,
% in other typewriter fonts three periods are wider than 1.5em. So do
% whichever is larger.
%
\def\dots
{
%
\leavevmode
\setbox
0=
\hbox
{
...
}
% get width of three periods
\ifdim\wd
0 > 1.5em
\dimen
0 =
\wd
0
\else
\dimen
0 = 1.5em
\fi
\hbox
to
\dimen
0
{
%
\hskip
0pt plus.25fil
.
\hskip
0pt plus1fil
.
\hskip
0pt plus1fil
.
\hskip
0pt plus.5fil
}
%
}
% @enddots{} is an end-of-sentence ellipsis.
%
\def\enddots
{
%
\dots
\spacefactor
=
\endofsentencespacefactor
}
% @comma{} is so commas can be inserted into text without messing up
% Texinfo's parsing.
%
\let\comma
= ,
% @refill is a no-op.
\let\refill
=
\relax
% If working on a large document in chapters, it is convenient to
% be able to disable indexing, cross-referencing, and contents, for test runs.
% This is done with @novalidate (before @setfilename).
%
\newif\iflinks
\linkstrue
% by default we want the aux files.
\let\novalidate
=
\linksfalse
% @setfilename is done at the beginning of every texinfo file.
% So open here the files we need to have open while reading the input.
% This makes it possible to make a .fmt file for texinfo.
\def\setfilename
{
%
\fixbackslash
% Turn off hack to swallow `\input texinfo'.
\iflinks
\tryauxfile
% Open the new aux file. TeX will close it automatically at exit.
\immediate\openout\auxfile
=
\jobname
.aux
\fi
% \openindices needs to do some work in any case.
\openindices
\let\setfilename
=
\comment
% Ignore extra @setfilename cmds.
%
% If texinfo.cnf is present on the system, read it.
% Useful for site-wide @afourpaper, etc.
\openin
1 texinfo.cnf
\ifeof
1
\else
\input
texinfo.cnf
\fi
\closein
1
%
\comment
% Ignore the actual filename.
}
% Called from \setfilename.
%
\def\openindices
{
%
\newindex
{
cp
}
%
\newcodeindex
{
fn
}
%
\newcodeindex
{
vr
}
%
\newcodeindex
{
tp
}
%
\newcodeindex
{
ky
}
%
\newcodeindex
{
pg
}
%
}
% @bye.
\outer\def\bye
{
\pagealignmacro\tracingstats
=1
\ptexend
}
\message
{
pdf,
}
% adobe `portable' document format
\newcount\tempnum
\newcount\lnkcount
\newtoks\filename
\newcount\filenamelength
\newcount\pgn
\newtoks\toksA
\newtoks\toksB
\newtoks\toksC
\newtoks\toksD
\newbox\boxA
\newcount\countA
\newif\ifpdf
\newif\ifpdfmakepagedest
% when pdftex is run in dvi mode, \pdfoutput is defined (so \pdfoutput=1
% can be set). So we test for \relax and 0 as well as \undefined,
% borrowed from ifpdf.sty.
\ifx\pdfoutput\undefined
\else
\ifx\pdfoutput\relax
\else
\ifcase\pdfoutput
\else
\pdftrue
\fi
\fi
\fi
% PDF uses PostScript string constants for the names of xref targets,
% for display in the outlines, and in other places. Thus, we have to
% double any backslashes. Otherwise, a name like "\node" will be
% interpreted as a newline (\n), followed by o, d, e. Not good.
% http://www.ntg.nl/pipermail/ntg-pdftex/2004-July/000654.html
% (and related messages, the final outcome is that it is up to the TeX
% user to double the backslashes and otherwise make the string valid, so
% that's what we do).
% double active backslashes.
%
{
\catcode
`
\@
=0
\catcode
`
\\
=
\active
@gdef@activebackslashdouble
{
%
@catcode`@
\=
@active
@let
\=
@doublebackslash
}
}
% To handle parens, we must adopt a different approach, since parens are
% not active characters. hyperref.dtx (which has the same problem as
% us) handles it with this amazing macro to replace tokens. I've
% tinkered with it a little for texinfo, but it's definitely from there.
%
% #1 is the tokens to replace.
% #2 is the replacement.
% #3 is the control sequence with the string.
%
\def\HyPsdSubst
#1#2#3
{
%
\def\HyPsdReplace
##1#1##2
\END
{
%
##1
%
\ifx\\
##2
\\
%
\else
#2
%
\HyReturnAfterFi
{
%
\HyPsdReplace
##2
\END
}
%
\fi
}
%
\xdef
#3
{
\expandafter\HyPsdReplace
#3#1
\END
}
%
}
\long\def\HyReturnAfterFi
#1
\fi
{
\fi
#1
}
% #1 is a control sequence in which to do the replacements.
\def\backslashparens
#1
{
%
\xdef
#1
{
#1
}
% redefine it as its expansion; the definition is simply
% \lastnode when called from \setref -> \pdfmkdest.
\HyPsdSubst
{
(
}{
\realbackslash
(
}{
#1
}
%
\HyPsdSubst
{
)
}{
\realbackslash
)
}{
#1
}
%
}
\ifpdf
\input
pdfcolor
\pdfcatalog
{
/PageMode /UseOutlines
}
%
% #1 is image name, #2 width (might be empty/whitespace), #3 height (ditto).
\def\dopdfimage
#1#2#3
{
%
\def\imagewidth
{
#2
}
\setbox
0 =
\hbox
{
\ignorespaces
#2
}
%
\def\imageheight
{
#3
}
\setbox
2 =
\hbox
{
\ignorespaces
#3
}
%
% without \immediate, pdftex seg faults when the same image is
% included twice. (Version 3.14159-pre-1.0-unofficial-20010704.)
\ifnum\pdftexversion
< 14
\immediate\pdfimage
\else
\immediate\pdfximage
\fi
\ifdim
\wd
0 >0pt width
\imagewidth
\fi
\ifdim
\wd
2 >0pt height
\imageheight
\fi
\ifnum\pdftexversion
<13
#1.pdf
%
\else
{
#1.pdf
}
%
\fi
\ifnum\pdftexversion
< 14
\else
\pdfrefximage
\pdflastximage
\fi
}
\def\pdfmkdest
#1
{{
%
% We have to set dummies so commands such as @code, and characters
% such as \, aren't expanded when present in a section title.
\atdummies
\activebackslashdouble
\def\pdfdestname
{
#1
}
%
\backslashparens\pdfdestname
\pdfdest
name
{
\pdfdestname
}
xyz
%
}}
%
%
% used to mark target names; must be expandable.
\def\pdfmkpgn
#1
{
#1
}
%
%
\let\linkcolor
=
\Blue
% was Cyan, but that seems light?
\def\endlink
{
\Black\pdfendlink
}
% Adding outlines to PDF; macros for calculating structure of outlines
% come from Petr Olsak
\def\expnumber
#1
{
\expandafter\ifx\csname
#1
\endcsname\relax
0
%
\else
\csname
#1
\endcsname
\fi
}
\def\advancenumber
#1
{
\tempnum
=
\expnumber
{
#1
}
\relax
\advance\tempnum
by 1
\expandafter\xdef\csname
#1
\endcsname
{
\the\tempnum
}}
%
% #1 is the section text, which is what will be displayed in the
% outline by the pdf viewer. #2 is the pdf expression for the number
% of subentries (or empty, for subsubsections). #3 is the node text,
% which might be empty if this toc entry had no corresponding node.
% #4 is the page number
%
\def\dopdfoutline
#1#2#3#4
{
%
% Generate a link to the node text if that exists; else, use the
% page number. We could generate a destination for the section
% text in the case where a section has no node, but it doesn't
% seem worth the trouble, since most documents are normally structured.
\def\pdfoutlinedest
{
#3
}
%
\ifx\pdfoutlinedest\empty
\def\pdfoutlinedest
{
#4
}
%
\else
% Doubled backslashes in the name.
{
\activebackslashdouble
\xdef\pdfoutlinedest
{
#3
}
%
\backslashparens\pdfoutlinedest
}
%
\fi
%
% Also double the backslashes in the display string.
{
\activebackslashdouble
\xdef\pdfoutlinetext
{
#1
}
%
\backslashparens\pdfoutlinetext
}
%
%
\pdfoutline
goto name
{
\pdfmkpgn
{
\pdfoutlinedest
}}
#2
{
\pdfoutlinetext
}
%
}
%
\def\pdfmakeoutlines
{
%
\begingroup
% Thanh's hack / proper braces in bookmarks
\edef\mylbrace
{
\iftrue
\string
{
\else
}
\fi
}
\let\{
=
\mylbrace
\edef\myrbrace
{
\iffalse
{
\else\string
}
\fi
}
\let\}
=
\myrbrace
%
% Read toc silently, to get counts of subentries for \pdfoutline.
\def\numchapentry
##1##2##3##4
{
%
\def\thischapnum
{
##2
}
%
\def\thissecnum
{
0
}
%
\def\thissubsecnum
{
0
}
%
}
%
\def\numsecentry
##1##2##3##4
{
%
\advancenumber
{
chap
\thischapnum
}
%
\def\thissecnum
{
##2
}
%
\def\thissubsecnum
{
0
}
%
}
%
\def\numsubsecentry
##1##2##3##4
{
%
\advancenumber
{
sec
\thissecnum
}
%
\def\thissubsecnum
{
##2
}
%
}
%
\def\numsubsubsecentry
##1##2##3##4
{
%
\advancenumber
{
subsec
\thissubsecnum
}
%
}
%
\def\thischapnum
{
0
}
%
\def\thissecnum
{
0
}
%
\def\thissubsecnum
{
0
}
%
%
% use \def rather than \let here because we redefine \chapentry et
% al. a second time, below.
\def\appentry
{
\numchapentry
}
%
\def\appsecentry
{
\numsecentry
}
%
\def\appsubsecentry
{
\numsubsecentry
}
%
\def\appsubsubsecentry
{
\numsubsubsecentry
}
%
\def\unnchapentry
{
\numchapentry
}
%
\def\unnsecentry
{
\numsecentry
}
%
\def\unnsubsecentry
{
\numsubsecentry
}
%
\def\unnsubsubsecentry
{
\numsubsubsecentry
}
%
\readdatafile
{
toc
}
%
%
% Read toc second time, this time actually producing the outlines.
% The `-' means take the \expnumber as the absolute number of
% subentries, which we calculated on our first read of the .toc above.
%
% We use the node names as the destinations.
\def\numchapentry
##1##2##3##4
{
%
\dopdfoutline
{
##1
}{
count-
\expnumber
{
chap##2
}}{
##3
}{
##4
}}
%
\def\numsecentry
##1##2##3##4
{
%
\dopdfoutline
{
##1
}{
count-
\expnumber
{
sec##2
}}{
##3
}{
##4
}}
%
\def\numsubsecentry
##1##2##3##4
{
%
\dopdfoutline
{
##1
}{
count-
\expnumber
{
subsec##2
}}{
##3
}{
##4
}}
%
\def\numsubsubsecentry
##1##2##3##4
{
% count is always zero
\dopdfoutline
{
##1
}{}{
##3
}{
##4
}}
%
%
% PDF outlines are displayed using system fonts, instead of
% document fonts. Therefore we cannot use special characters,
% since the encoding is unknown. For example, the eogonek from
% Latin 2 (0xea) gets translated to a | character. Info from
% Staszek Wawrykiewicz, 19 Jan 2004 04:09:24 +0100.
%
% xx to do this right, we have to translate 8-bit characters to
% their "best" equivalent, based on the @documentencoding. Right
% now, I guess we'll just let the pdf reader have its way.
\indexnofonts
\setupdatafile
\catcode
`
\\
=
\active
\otherbackslash
\input
\jobname
.toc
\endgroup
}
%
\def\skipspaces
#1
{
\def\PP
{
#1
}
\def\D
{
|
}
%
\ifx\PP\D\let\nextsp\relax
\else\let\nextsp\skipspaces
\ifx\p\space\else\addtokens
{
\filename
}{
\PP
}
%
\advance\filenamelength
by 1
\fi
\fi
\nextsp
}
\def\getfilename
#1
{
\filenamelength
=0
\expandafter\skipspaces
#1|
\relax
}
\ifnum\pdftexversion
< 14
\let
\startlink
\pdfannotlink
\else
\let
\startlink
\pdfstartlink
\fi
% make a live url in pdf output.
\def\pdfurl
#1
{
%
\begingroup
% it seems we really need yet another set of dummies; have not
% tried to figure out what each command should do in the context
% of @url. for now, just make @/ a no-op, that's the only one
% people have actually reported a problem with.
%
\normalturnoffactive
\def\@
{
@
}
%
\let\/
=
\empty
\makevalueexpandable
\leavevmode\Red
\startlink
attr
{
/Border [0 0 0]
}
%
user
{
/Subtype /Link /A << /S /URI /URI (#1) >>
}
%
\endgroup
}
\def\pdfgettoks
#1.
{
\setbox\boxA
=
\hbox
{
\toksA
=
{
#1.
}
\toksB
=
{}
\maketoks
}}
\def\addtokens
#1#2
{
\edef\addtoks
{
\noexpand
#1=
{
\the
#1#2
}}
\addtoks
}
\def\adn
#1
{
\addtokens
{
\toksC
}{
#1
}
\global\countA
=1
\let\next
=
\maketoks
}
\def\poptoks
#1#2|ENDTOKS|
{
\let\first
=#1
\toksD
=
{
#1
}
\toksA
=
{
#2
}}
\def\maketoks
{
%
\expandafter\poptoks\the\toksA
|ENDTOKS|
\relax
\ifx\first
0
\adn
0
\else\ifx\first
1
\adn
1
\else\ifx\first
2
\adn
2
\else\ifx\first
3
\adn
3
\else\ifx\first
4
\adn
4
\else\ifx\first
5
\adn
5
\else\ifx\first
6
\adn
6
\else\ifx\first
7
\adn
7
\else\ifx\first
8
\adn
8
\else\ifx\first
9
\adn
9
\else
\ifnum
0=
\countA\else\makelink\fi
\ifx\first
.
\let\next
=
\done\else
\let\next
=
\maketoks
\addtokens
{
\toksB
}{
\the\toksD
}
\ifx\first
,
\addtokens
{
\toksB
}{
\space
}
\fi
\fi
\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
\next
}
\def\makelink
{
\addtokens
{
\toksB
}
%
{
\noexpand\pdflink
{
\the\toksC
}}
\toksC
=
{}
\global\countA
=0
}
\def\pdflink
#1
{
%
\startlink
attr
{
/Border [0 0 0]
}
goto name
{
\pdfmkpgn
{
#1
}}
\linkcolor
#1
\endlink
}
\def\done
{
\edef\st
{
\global\noexpand\toksA
=
{
\the\toksB
}}
\st
}
\else
\let\pdfmkdest
=
\gobble
\let\pdfurl
=
\gobble
\let\endlink
=
\relax
\let\linkcolor
=
\relax
\let\pdfmakeoutlines
=
\relax
\fi
% \ifx\pdfoutput
\message
{
fonts,
}
% Change the current font style to #1, remembering it in \curfontstyle.
% For now, we do not accumulate font styles: @b{@i{foo}} prints foo in
% italics, not bold italics.
%
\def\setfontstyle
#1
{
%
\def\curfontstyle
{
#1
}
% not as a control sequence, because we are \edef'd.
\csname
ten#1
\endcsname
% change the current font
}
% Select #1 fonts with the current style.
%
\def\selectfonts
#1
{
\csname
#1fonts
\endcsname
\csname\curfontstyle\endcsname
}
\def\rm
{
\fam
=0
\setfontstyle
{
rm
}}
\def\it
{
\fam
=
\itfam
\setfontstyle
{
it
}}
\def\sl
{
\fam
=
\slfam
\setfontstyle
{
sl
}}
\def\bf
{
\fam
=
\bffam
\setfontstyle
{
bf
}}
\def\bfstylename
{
bf
}
\def\tt
{
\fam
=
\ttfam
\setfontstyle
{
tt
}}
% Texinfo sort of supports the sans serif font style, which plain TeX does not.
% So we set up a \sf.
\newfam\sffam
\def\sf
{
\fam
=
\sffam
\setfontstyle
{
sf
}}
\let\li
=
\sf
% Sometimes we call it \li, not \sf.
% We don't need math for this font style.
\def\ttsl
{
\setfontstyle
{
ttsl
}}
% Default leading.
\newdimen\textleading
\textleading
= 13.2pt
% Set the baselineskip to #1, and the lineskip and strut size
% correspondingly. There is no deep meaning behind these magic numbers
% used as factors; they just match (closely enough) what Knuth defined.
%
\def\lineskipfactor
{
.08333
}
\def\strutheightpercent
{
.70833
}
\def\strutdepthpercent
{
.29167
}
%
\def\setleading
#1
{
%
\normalbaselineskip
= #1
\relax
\normallineskip
=
\lineskipfactor\normalbaselineskip
\normalbaselines
\setbox\strutbox
=
\hbox
{
%
\vrule
width0pt height
\strutheightpercent\baselineskip
depth
\strutdepthpercent
\baselineskip
}
%
}
% Set the font macro #1 to the font named #2, adding on the
% specified font prefix (normally `cm').
% #3 is the font's design size, #4 is a scale factor
\def\setfont
#1#2#3#4
{
\font
#1=
\fontprefix
#2#3 scaled #4
}
% Use cm as the default font prefix.
% To specify the font prefix, you must define \fontprefix
% before you read in texinfo.tex.
\ifx\fontprefix\undefined
\def\fontprefix
{
cm
}
\fi
% Support font families that don't use the same naming scheme as CM.
\def\rmshape
{
r
}
\def\rmbshape
{
bx
}
%where the normal face is bold
\def\bfshape
{
b
}
\def\bxshape
{
bx
}
\def\ttshape
{
tt
}
\def\ttbshape
{
tt
}
\def\ttslshape
{
sltt
}
\def\itshape
{
ti
}
\def\itbshape
{
bxti
}
\def\slshape
{
sl
}
\def\slbshape
{
bxsl
}
\def\sfshape
{
ss
}
\def\sfbshape
{
ss
}
\def\scshape
{
csc
}
\def\scbshape
{
csc
}
% Definitions for a main text size of 11pt. This is the default in
% Texinfo.
%
\def\definetextfontsizexi
{
% Text fonts (11.2pt, magstep1).
\def\textnominalsize
{
11pt
}
\edef\mainmagstep
{
\magstephalf
}
\setfont\textrm\rmshape
{
10
}{
\mainmagstep
}
\setfont\texttt\ttshape
{
10
}{
\mainmagstep
}
\setfont\textbf\bfshape
{
10
}{
\mainmagstep
}
\setfont\textit\itshape
{
10
}{
\mainmagstep
}
\setfont\textsl\slshape
{
10
}{
\mainmagstep
}
\setfont\textsf\sfshape
{
10
}{
\mainmagstep
}
\setfont\textsc\scshape
{
10
}{
\mainmagstep
}
\setfont\textttsl\ttslshape
{
10
}{
\mainmagstep
}
\font\texti
=cmmi10 scaled
\mainmagstep
\font\textsy
=cmsy10 scaled
\mainmagstep
% A few fonts for @defun names and args.
\setfont\defbf\bfshape
{
10
}{
\magstep
1
}
\setfont\deftt\ttshape
{
10
}{
\magstep
1
}
\setfont\defttsl\ttslshape
{
10
}{
\magstep
1
}
\def\df
{
\let\tentt
=
\deftt
\let\tenbf
=
\defbf
\let\tenttsl
=
\defttsl
\bf
}
% Fonts for indices, footnotes, small examples (9pt).
\def\smallnominalsize
{
9pt
}
\setfont\smallrm\rmshape
{
9
}{
1000
}
\setfont\smalltt\ttshape
{
9
}{
1000
}
\setfont\smallbf\bfshape
{
10
}{
900
}
\setfont\smallit\itshape
{
9
}{
1000
}
\setfont\smallsl\slshape
{
9
}{
1000
}
\setfont\smallsf\sfshape
{
9
}{
1000
}
\setfont\smallsc\scshape
{
10
}{
900
}
\setfont\smallttsl\ttslshape
{
10
}{
900
}
\font\smalli
=cmmi9
\font\smallsy
=cmsy9
% Fonts for small examples (8pt).
\def\smallernominalsize
{
8pt
}
\setfont\smallerrm\rmshape
{
8
}{
1000
}
\setfont\smallertt\ttshape
{
8
}{
1000
}
\setfont\smallerbf\bfshape
{
10
}{
800
}
\setfont\smallerit\itshape
{
8
}{
1000
}
\setfont\smallersl\slshape
{
8
}{
1000
}
\setfont\smallersf\sfshape
{
8
}{
1000
}
\setfont\smallersc\scshape
{
10
}{
800
}
\setfont\smallerttsl\ttslshape
{
10
}{
800
}
\font\smalleri
=cmmi8
\font\smallersy
=cmsy8
% Fonts for title page (20.4pt):
\def\titlenominalsize
{
20pt
}
\setfont\titlerm\rmbshape
{
12
}{
\magstep
3
}
\setfont\titleit\itbshape
{
10
}{
\magstep
4
}
\setfont\titlesl\slbshape
{
10
}{
\magstep
4
}
\setfont\titlett\ttbshape
{
12
}{
\magstep
3
}
\setfont\titlettsl\ttslshape
{
10
}{
\magstep
4
}
\setfont\titlesf\sfbshape
{
17
}{
\magstep
1
}
\let\titlebf
=
\titlerm
\setfont\titlesc\scbshape
{
10
}{
\magstep
4
}
\font\titlei
=cmmi12 scaled
\magstep
3
\font\titlesy
=cmsy10 scaled
\magstep
4
\def\authorrm
{
\secrm
}
\def\authortt
{
\sectt
}
% Chapter (and unnumbered) fonts (17.28pt).
\def\chapnominalsize
{
17pt
}
\setfont\chaprm\rmbshape
{
12
}{
\magstep
2
}
\setfont\chapit\itbshape
{
10
}{
\magstep
3
}
\setfont\chapsl\slbshape
{
10
}{
\magstep
3
}
\setfont\chaptt\ttbshape
{
12
}{
\magstep
2
}
\setfont\chapttsl\ttslshape
{
10
}{
\magstep
3
}
\setfont\chapsf\sfbshape
{
17
}{
1000
}
\let\chapbf
=
\chaprm
\setfont\chapsc\scbshape
{
10
}{
\magstep
3
}
\font\chapi
=cmmi12 scaled
\magstep
2
\font\chapsy
=cmsy10 scaled
\magstep
3
% Section fonts (14.4pt).
\def\secnominalsize
{
14pt
}
\setfont\secrm\rmbshape
{
12
}{
\magstep
1
}
\setfont\secit\itbshape
{
10
}{
\magstep
2
}
\setfont\secsl\slbshape
{
10
}{
\magstep
2
}
\setfont\sectt\ttbshape
{
12
}{
\magstep
1
}
\setfont\secttsl\ttslshape
{
10
}{
\magstep
2
}
\setfont\secsf\sfbshape
{
12
}{
\magstep
1
}
\let\secbf\secrm
\setfont\secsc\scbshape
{
10
}{
\magstep
2
}
\font\seci
=cmmi12 scaled
\magstep
1
\font\secsy
=cmsy10 scaled
\magstep
2
% Subsection fonts (13.15pt).
\def\ssecnominalsize
{
13pt
}
\setfont\ssecrm\rmbshape
{
12
}{
\magstephalf
}
\setfont\ssecit\itbshape
{
10
}{
1315
}
\setfont\ssecsl\slbshape
{
10
}{
1315
}
\setfont\ssectt\ttbshape
{
12
}{
\magstephalf
}
\setfont\ssecttsl\ttslshape
{
10
}{
1315
}
\setfont\ssecsf\sfbshape
{
12
}{
\magstephalf
}
\let\ssecbf\ssecrm
\setfont\ssecsc\scbshape
{
10
}{
1315
}
\font\sseci
=cmmi12 scaled
\magstephalf
\font\ssecsy
=cmsy10 scaled 1315
% Reduced fonts for @acro in text (10pt).
\def\reducednominalsize
{
10pt
}
\setfont\reducedrm\rmshape
{
10
}{
1000
}
\setfont\reducedtt\ttshape
{
10
}{
1000
}
\setfont\reducedbf\bfshape
{
10
}{
1000
}
\setfont\reducedit\itshape
{
10
}{
1000
}
\setfont\reducedsl\slshape
{
10
}{
1000
}
\setfont\reducedsf\sfshape
{
10
}{
1000
}
\setfont\reducedsc\scshape
{
10
}{
1000
}
\setfont\reducedttsl\ttslshape
{
10
}{
1000
}
\font\reducedi
=cmmi10
\font\reducedsy
=cmsy10
% reset the current fonts
\textfonts
\rm
}
% end of 11pt text font size definitions
% Definitions to make the main text be 10pt Computer Modern, with
% section, chapter, etc., sizes following suit. This is for the GNU
% Press printing of the Emacs 22 manual. Maybe other manuals in the
% future. Used with @smallbook, which sets the leading to 12pt.
%
\def\definetextfontsizex
{
%
% Text fonts (10pt).
\def\textnominalsize
{
10pt
}
\edef\mainmagstep
{
1000
}
\setfont\textrm\rmshape
{
10
}{
\mainmagstep
}
\setfont\texttt\ttshape
{
10
}{
\mainmagstep
}
\setfont\textbf\bfshape
{
10
}{
\mainmagstep
}
\setfont\textit\itshape
{
10
}{
\mainmagstep
}
\setfont\textsl\slshape
{
10
}{
\mainmagstep
}
\setfont\textsf\sfshape
{
10
}{
\mainmagstep
}
\setfont\textsc\scshape
{
10
}{
\mainmagstep
}
\setfont\textttsl\ttslshape
{
10
}{
\mainmagstep
}
\font\texti
=cmmi10 scaled
\mainmagstep
\font\textsy
=cmsy10 scaled
\mainmagstep
% A few fonts for @defun names and args.
\setfont\defbf\bfshape
{
10
}{
\magstephalf
}
\setfont\deftt\ttshape
{
10
}{
\magstephalf
}
\setfont\defttsl\ttslshape
{
10
}{
\magstephalf
}
\def\df
{
\let\tentt
=
\deftt
\let\tenbf
=
\defbf
\let\tenttsl
=
\defttsl
\bf
}
% Fonts for indices, footnotes, small examples (9pt).
\def\smallnominalsize
{
9pt
}
\setfont\smallrm\rmshape
{
9
}{
1000
}
\setfont\smalltt\ttshape
{
9
}{
1000
}
\setfont\smallbf\bfshape
{
10
}{
900
}
\setfont\smallit\itshape
{
9
}{
1000
}
\setfont\smallsl\slshape
{
9
}{
1000
}
\setfont\smallsf\sfshape
{
9
}{
1000
}
\setfont\smallsc\scshape
{
10
}{
900
}
\setfont\smallttsl\ttslshape
{
10
}{
900
}
\font\smalli
=cmmi9
\font\smallsy
=cmsy9
% Fonts for small examples (8pt).
\def\smallernominalsize
{
8pt
}
\setfont\smallerrm\rmshape
{
8
}{
1000
}
\setfont\smallertt\ttshape
{
8
}{
1000
}
\setfont\smallerbf\bfshape
{
10
}{
800
}
\setfont\smallerit\itshape
{
8
}{
1000
}
\setfont\smallersl\slshape
{
8
}{
1000
}
\setfont\smallersf\sfshape
{
8
}{
1000
}
\setfont\smallersc\scshape
{
10
}{
800
}
\setfont\smallerttsl\ttslshape
{
10
}{
800
}
\font\smalleri
=cmmi8
\font\smallersy
=cmsy8
% Fonts for title page (20.4pt):
\def\titlenominalsize
{
20pt
}
\setfont\titlerm\rmbshape
{
12
}{
\magstep
3
}
\setfont\titleit\itbshape
{
10
}{
\magstep
4
}
\setfont\titlesl\slbshape
{
10
}{
\magstep
4
}
\setfont\titlett\ttbshape
{
12
}{
\magstep
3
}
\setfont\titlettsl\ttslshape
{
10
}{
\magstep
4
}
\setfont\titlesf\sfbshape
{
17
}{
\magstep
1
}
\let\titlebf
=
\titlerm
\setfont\titlesc\scbshape
{
10
}{
\magstep
4
}
\font\titlei
=cmmi12 scaled
\magstep
3
\font\titlesy
=cmsy10 scaled
\magstep
4
\def\authorrm
{
\secrm
}
\def\authortt
{
\sectt
}
% Chapter fonts (14.4pt).
\def\chapnominalsize
{
14pt
}
\setfont\chaprm\rmbshape
{
12
}{
\magstep
1
}
\setfont\chapit\itbshape
{
10
}{
\magstep
2
}
\setfont\chapsl\slbshape
{
10
}{
\magstep
2
}
\setfont\chaptt\ttbshape
{
12
}{
\magstep
1
}
\setfont\chapttsl\ttslshape
{
10
}{
\magstep
2
}
\setfont\chapsf\sfbshape
{
12
}{
\magstep
1
}
\let\chapbf\chaprm
\setfont\chapsc\scbshape
{
10
}{
\magstep
2
}
\font\chapi
=cmmi12 scaled
\magstep
1
\font\chapsy
=cmsy10 scaled
\magstep
2
% Section fonts (12pt).
\def\secnominalsize
{
12pt
}
\setfont\secrm\rmbshape
{
12
}{
1000
}
\setfont\secit\itbshape
{
10
}{
\magstep
1
}
\setfont\secsl\slbshape
{
10
}{
\magstep
1
}
\setfont\sectt\ttbshape
{
12
}{
1000
}
\setfont\secttsl\ttslshape
{
10
}{
\magstep
1
}
\setfont\secsf\sfbshape
{
12
}{
1000
}
\let\secbf\secrm
\setfont\secsc\scbshape
{
10
}{
\magstep
1
}
\font\seci
=cmmi12
\font\secsy
=cmsy10 scaled
\magstep
1
% Subsection fonts (10pt).
\def\ssecnominalsize
{
10pt
}
\setfont\ssecrm\rmbshape
{
10
}{
1000
}
\setfont\ssecit\itbshape
{
10
}{
1000
}
\setfont\ssecsl\slbshape
{
10
}{
1000
}
\setfont\ssectt\ttbshape
{
10
}{
1000
}
\setfont\ssecttsl\ttslshape
{
10
}{
1000
}
\setfont\ssecsf\sfbshape
{
10
}{
1000
}
\let\ssecbf\ssecrm
\setfont\ssecsc\scbshape
{
10
}{
1000
}
\font\sseci
=cmmi10
\font\ssecsy
=cmsy10
% Reduced fonts for @acro in text (9pt).
\def\reducednominalsize
{
9pt
}
\setfont\reducedrm\rmshape
{
9
}{
1000
}
\setfont\reducedtt\ttshape
{
9
}{
1000
}
\setfont\reducedbf\bfshape
{
10
}{
900
}
\setfont\reducedit\itshape
{
9
}{
1000
}
\setfont\reducedsl\slshape
{
9
}{
1000
}
\setfont\reducedsf\sfshape
{
9
}{
1000
}
\setfont\reducedsc\scshape
{
10
}{
900
}
\setfont\reducedttsl\ttslshape
{
10
}{
900
}
\font\reducedi
=cmmi9
\font\reducedsy
=cmsy9
% reduce space between paragraphs
\divide\parskip
by 2
% reset the current fonts
\textfonts
\rm
}
% end of 10pt text font size definitions
% We provide the user-level command
% @fonttextsize 10
% (or 11) to redefine the text font size. pt is assumed.
%
\def\xword
{
10
}
\def\xiword
{
11
}
%
\parseargdef\fonttextsize
{
%
\def\textsizearg
{
#1
}
%
\wlog
{
doing @fonttextsize
\textsizearg
}
%
%
% Set \globaldefs so that documents can use this inside @tex, since
% makeinfo 4.8 does not support it, but we need it nonetheless.
%
\begingroup
\globaldefs
=1
\ifx\textsizearg\xword
\definetextfontsizex
\else
\ifx\textsizearg\xiword
\definetextfontsizexi
\else
\errhelp
=
\EMsimple
\errmessage
{
@fonttextsize only supports `10' or `11', not `
\textsizearg
'
}
\fi\fi
\endgroup
}
% In order for the font changes to affect most math symbols and letters,
% we have to define the \textfont of the standard families. Since
% texinfo doesn't allow for producing subscripts and superscripts except
% in the main text, we don't bother to reset \scriptfont and
% \scriptscriptfont (which would also require loading a lot more fonts).
%
\def\resetmathfonts
{
%
\textfont
0=
\tenrm
\textfont
1=
\teni
\textfont
2=
\tensy
\textfont\itfam
=
\tenit
\textfont\slfam
=
\tensl
\textfont\bffam
=
\tenbf
\textfont\ttfam
=
\tentt
\textfont\sffam
=
\tensf
}
% The font-changing commands redefine the meanings of \tenSTYLE, instead
% of just \STYLE. We do this because \STYLE needs to also set the
% current \fam for math mode. Our \STYLE (e.g., \rm) commands hardwire
% \tenSTYLE to set the current font.
%
% Each font-changing command also sets the names \lsize (one size lower)
% and \lllsize (three sizes lower). These relative commands are used in
% the LaTeX logo and acronyms.
%
% This all needs generalizing, badly.
%
\def\textfonts
{
%
\let\tenrm
=
\textrm
\let\tenit
=
\textit
\let\tensl
=
\textsl
\let\tenbf
=
\textbf
\let\tentt
=
\texttt
\let\smallcaps
=
\textsc
\let\tensf
=
\textsf
\let\teni
=
\texti
\let\tensy
=
\textsy
\let\tenttsl
=
\textttsl
\def\curfontsize
{
text
}
%
\def\lsize
{
reduced
}
\def\lllsize
{
smaller
}
%
\resetmathfonts
\setleading
{
\textleading
}}
\def\titlefonts
{
%
\let\tenrm
=
\titlerm
\let\tenit
=
\titleit
\let\tensl
=
\titlesl
\let\tenbf
=
\titlebf
\let\tentt
=
\titlett
\let\smallcaps
=
\titlesc
\let\tensf
=
\titlesf
\let\teni
=
\titlei
\let\tensy
=
\titlesy
\let\tenttsl
=
\titlettsl
\def\curfontsize
{
title
}
%
\def\lsize
{
chap
}
\def\lllsize
{
subsec
}
%
\resetmathfonts
\setleading
{
25pt
}}
\def\titlefont
#1
{{
\titlefonts\rm
#1
}}
\def\chapfonts
{
%
\let\tenrm
=
\chaprm
\let\tenit
=
\chapit
\let\tensl
=
\chapsl
\let\tenbf
=
\chapbf
\let\tentt
=
\chaptt
\let\smallcaps
=
\chapsc
\let\tensf
=
\chapsf
\let\teni
=
\chapi
\let\tensy
=
\chapsy
\let\tenttsl
=
\chapttsl
\def\curfontsize
{
chap
}
%
\def\lsize
{
sec
}
\def\lllsize
{
text
}
%
\resetmathfonts
\setleading
{
19pt
}}
\def\secfonts
{
%
\let\tenrm
=
\secrm
\let\tenit
=
\secit
\let\tensl
=
\secsl
\let\tenbf
=
\secbf
\let\tentt
=
\sectt
\let\smallcaps
=
\secsc
\let\tensf
=
\secsf
\let\teni
=
\seci
\let\tensy
=
\secsy
\let\tenttsl
=
\secttsl
\def\curfontsize
{
sec
}
%
\def\lsize
{
subsec
}
\def\lllsize
{
reduced
}
%
\resetmathfonts
\setleading
{
16pt
}}
\def\subsecfonts
{
%
\let\tenrm
=
\ssecrm
\let\tenit
=
\ssecit
\let\tensl
=
\ssecsl
\let\tenbf
=
\ssecbf
\let\tentt
=
\ssectt
\let\smallcaps
=
\ssecsc
\let\tensf
=
\ssecsf
\let\teni
=
\sseci
\let\tensy
=
\ssecsy
\let\tenttsl
=
\ssecttsl
\def\curfontsize
{
ssec
}
%
\def\lsize
{
text
}
\def\lllsize
{
small
}
%
\resetmathfonts
\setleading
{
15pt
}}
\let\subsubsecfonts
=
\subsecfonts
\def\reducedfonts
{
%
\let\tenrm
=
\reducedrm
\let\tenit
=
\reducedit
\let\tensl
=
\reducedsl
\let\tenbf
=
\reducedbf
\let\tentt
=
\reducedtt
\let\reducedcaps
=
\reducedsc
\let\tensf
=
\reducedsf
\let\teni
=
\reducedi
\let\tensy
=
\reducedsy
\let\tenttsl
=
\reducedttsl
\def\curfontsize
{
reduced
}
%
\def\lsize
{
small
}
\def\lllsize
{
smaller
}
%
\resetmathfonts
\setleading
{
10.5pt
}}
\def\smallfonts
{
%
\let\tenrm
=
\smallrm
\let\tenit
=
\smallit
\let\tensl
=
\smallsl
\let\tenbf
=
\smallbf
\let\tentt
=
\smalltt
\let\smallcaps
=
\smallsc
\let\tensf
=
\smallsf
\let\teni
=
\smalli
\let\tensy
=
\smallsy
\let\tenttsl
=
\smallttsl
\def\curfontsize
{
small
}
%
\def\lsize
{
smaller
}
\def\lllsize
{
smaller
}
%
\resetmathfonts
\setleading
{
10.5pt
}}
\def\smallerfonts
{
%
\let\tenrm
=
\smallerrm
\let\tenit
=
\smallerit
\let\tensl
=
\smallersl
\let\tenbf
=
\smallerbf
\let\tentt
=
\smallertt
\let\smallcaps
=
\smallersc
\let\tensf
=
\smallersf
\let\teni
=
\smalleri
\let\tensy
=
\smallersy
\let\tenttsl
=
\smallerttsl
\def\curfontsize
{
smaller
}
%
\def\lsize
{
smaller
}
\def\lllsize
{
smaller
}
%
\resetmathfonts
\setleading
{
9.5pt
}}
% Set the fonts to use with the @small... environments.
\let\smallexamplefonts
=
\smallfonts
% About \smallexamplefonts. If we use \smallfonts (9pt), @smallexample
% can fit this many characters:
% 8.5x11=86 smallbook=72 a4=90 a5=69
% If we use \scriptfonts (8pt), then we can fit this many characters:
% 8.5x11=90+ smallbook=80 a4=90+ a5=77
% For me, subjectively, the few extra characters that fit aren't worth
% the additional smallness of 8pt. So I'm making the default 9pt.
%
% By the way, for comparison, here's what fits with @example (10pt):
% 8.5x11=71 smallbook=60 a4=75 a5=58
%
% I wish the USA used A4 paper.
% --karl, 24jan03.
% Set up the default fonts, so we can use them for creating boxes.
%
\definetextfontsizexi
% Define these so they can be easily changed for other fonts.
\def\angleleft
{
$
\langle
$
}
\def\angleright
{
$
\rangle
$
}
% Count depth in font-changes, for error checks
\newcount\fontdepth
\fontdepth
=0
% Fonts for short table of contents.
\setfont\shortcontrm\rmshape
{
12
}{
1000
}
\setfont\shortcontbf\bfshape
{
10
}{
\magstep
1
}
% no cmb12
\setfont\shortcontsl\slshape
{
12
}{
1000
}
\setfont\shortconttt\ttshape
{
12
}{
1000
}
%% Add scribe-like font environments, plus @l for inline lisp (usually sans
%% serif) and @ii for TeX italic
% \smartitalic{ARG} outputs arg in italics, followed by an italic correction
% unless the following character is such as not to need one.
\def\smartitalicx
{
\ifx\next
,
\else\ifx\next
-
\else\ifx\next
.
\else
\ptexslash\fi\fi\fi
}
\def\smartslanted
#1
{{
\ifusingtt\ttsl\sl
#1
}
\futurelet\next\smartitalicx
}
\def\smartitalic
#1
{{
\ifusingtt\ttsl\it
#1
}
\futurelet\next\smartitalicx
}
% like \smartslanted except unconditionally uses \ttsl.
% @var is set to this for defun arguments.
\def\ttslanted
#1
{{
\ttsl
#1
}
\futurelet\next\smartitalicx
}
% like \smartslanted except unconditionally use \sl. We never want
% ttsl for book titles, do we?
\def\cite
#1
{{
\sl
#1
}
\futurelet\next\smartitalicx
}
\let\i
=
\smartitalic
\let\slanted
=
\smartslanted
\let\var
=
\smartslanted
\let\dfn
=
\smartslanted
\let\emph
=
\smartitalic
% @b, explicit bold.
\def\b
#1
{{
\bf
#1
}}
\let\strong
=
\b
% @sansserif, explicit sans.
\def\sansserif
#1
{{
\sf
#1
}}
% We can't just use \exhyphenpenalty, because that only has effect at
% the end of a paragraph. Restore normal hyphenation at the end of the
% group within which \nohyphenation is presumably called.
%
\def\nohyphenation
{
\hyphenchar\font
= -1
\aftergroup\restorehyphenation
}
\def\restorehyphenation
{
\hyphenchar\font
= `-
}
% Set sfcode to normal for the chars that usually have another value.
% Can't use plain's \frenchspacing because it uses the `\x notation, and
% sometimes \x has an active definition that messes things up.
%
\catcode
`@=11
\def\plainfrenchspacing
{
%
\sfcode\dotChar
=
\@
m
\sfcode\questChar
=
\@
m
\sfcode\exclamChar
=
\@
m
\sfcode\colonChar
=
\@
m
\sfcode\semiChar
=
\@
m
\sfcode\commaChar
=
\@
m
\def\endofsentencespacefactor
{
1000
}
% for @. and friends
}
\def\plainnonfrenchspacing
{
%
\sfcode
`
\.
3000
\sfcode
`
\?
3000
\sfcode
`
\!
3000
\sfcode
`
\:
2000
\sfcode
`
\;
1500
\sfcode
`
\,
1250
\def\endofsentencespacefactor
{
3000
}
% for @. and friends
}
\catcode
`@=
\other
\def\endofsentencespacefactor
{
3000
}
% default
\def\t
#1
{
%
{
\tt
\rawbackslash
\plainfrenchspacing
#1
}
%
\null
}
\def\samp
#1
{
`
\tclose
{
#1
}
'
\null
}
\setfont\keyrm\rmshape
{
8
}{
1000
}
\font\keysy
=cmsy9
\def\key
#1
{{
\keyrm\textfont
2=
\keysy
\leavevmode\hbox
{
%
\raise
0.4pt
\hbox
{
\angleleft
}
\kern
-.08em
\vtop
{
%
\vbox
{
\hrule\kern
-0.4pt
\hbox
{
\raise
0.4pt
\hbox
{
\vphantom
{
\angleleft
}}
#1
}}
%
\kern
-0.4pt
\hrule
}
%
\kern
-.06em
\raise
0.4pt
\hbox
{
\angleright
}}}}
% The old definition, with no lozenge:
%\def\key #1{{\ttsl \nohyphenation \uppercase{#1}}\null}
\def\ctrl
#1
{{
\tt
\rawbackslash
\hat
}
#1
}
% @file, @option are the same as @samp.
\let\file
=
\samp
\let\option
=
\samp
% @code is a modification of @t,
% which makes spaces the same size as normal in the surrounding text.
\def\tclose
#1
{
%
{
%
% Change normal interword space to be same as for the current font.
\spaceskip
=
\fontdimen
2
\font
%
% Switch to typewriter.
\tt
%
% But `\ ' produces the large typewriter interword space.
\def\
{{
\spaceskip
= 0pt
{}
}}
%
%
% Turn off hyphenation.
\nohyphenation
%
\rawbackslash
\plainfrenchspacing
#1
%
}
%
\null
}
% We *must* turn on hyphenation at `-' and `_' in @code.
% Otherwise, it is too hard to avoid overfull hboxes
% in the Emacs manual, the Library manual, etc.
% Unfortunately, TeX uses one parameter (\hyphenchar) to control
% both hyphenation at - and hyphenation within words.
% We must therefore turn them both off (\tclose does that)
% and arrange explicitly to hyphenate at a dash.
% -- rms.
{
\catcode
`
\-
=
\active
\catcode
`
\_
=
\active
\catcode
`
\'
=
\active
\catcode
`
\`
=
\active
%
\global\def\code
{
\begingroup
\catcode\rquoteChar
=
\active
\catcode\lquoteChar
=
\active
\let
'
\codequoteright
\let
`
\codequoteleft
%
\catcode\dashChar
=
\active
\catcode\underChar
=
\active
\ifallowcodebreaks
\let
-
\codedash
\let
_
\codeunder
\else
\let
-
\realdash
\let
_
\realunder
\fi
\codex
}
}
\def\realdash
{
-
}
\def\codedash
{
-
\discretionary
{}{}{}}
\def\codeunder
{
%
% this is all so @math{@code{var_name}+1} can work. In math mode, _
% is "active" (mathcode"8000) and \normalunderscore (or \char95, etc.)
% will therefore expand the active definition of _, which is us
% (inside @code that is), therefore an endless loop.
\ifusingtt
{
\ifmmode
\mathchar
"075F
% class 0=ordinary, family 7=ttfam, pos 0x5F=_.
\else\normalunderscore
\fi
\discretionary
{}{}{}}
%
{
\_
}
%
}
\def\codex
#1
{
\tclose
{
#1
}
\endgroup
}
% An additional complication: the above will allow breaks after, e.g.,
% each of the four underscores in __typeof__. This is undesirable in
% some manuals, especially if they don't have long identifiers in
% general. @allowcodebreaks provides a way to control this.
%
\newif\ifallowcodebreaks
\allowcodebreakstrue
\def\keywordtrue
{
true
}
\def\keywordfalse
{
false
}
\parseargdef\allowcodebreaks
{
%
\def\txiarg
{
#1
}
%
\ifx\txiarg\keywordtrue
\allowcodebreakstrue
\else\ifx\txiarg\keywordfalse
\allowcodebreaksfalse
\else
\errhelp
=
\EMsimple
\errmessage
{
Unknown @allowcodebreaks option `
\txiarg
'
}
%
\fi\fi
}
% @kbd is like @code, except that if the argument is just one @key command,
% then @kbd has no effect.
% @kbdinputstyle -- arg is `distinct' (@kbd uses slanted tty font always),
% `example' (@kbd uses ttsl only inside of @example and friends),
% or `code' (@kbd uses normal tty font always).
\parseargdef\kbdinputstyle
{
%
\def\txiarg
{
#1
}
%
\ifx\txiarg\worddistinct
\gdef\kbdexamplefont
{
\ttsl
}
\gdef\kbdfont
{
\ttsl
}
%
\else\ifx\txiarg\wordexample
\gdef\kbdexamplefont
{
\ttsl
}
\gdef\kbdfont
{
\tt
}
%
\else\ifx\txiarg\wordcode
\gdef\kbdexamplefont
{
\tt
}
\gdef\kbdfont
{
\tt
}
%
\else
\errhelp
=
\EMsimple
\errmessage
{
Unknown @kbdinputstyle option `
\txiarg
'
}
%
\fi\fi\fi
}
\def\worddistinct
{
distinct
}
\def\wordexample
{
example
}
\def\wordcode
{
code
}
% Default is `distinct.'
\kbdinputstyle
distinct
\def\xkey
{
\key
}
\def\kbdfoo
#1#2#3
\par
{
\def\one
{
#1
}
\def\three
{
#3
}
\def\threex
{
??
}
%
\ifx\one\xkey\ifx\threex\three
\key
{
#2
}
%
\else
{
\tclose
{
\kbdfont\look
}}
\fi
\else
{
\tclose
{
\kbdfont\look
}}
\fi
}
% For @indicateurl, @env, @command quotes seem unnecessary, so use \code.
\let\indicateurl
=
\code
\let\env
=
\code
\let\command
=
\code
% @uref (abbreviation for `urlref') takes an optional (comma-separated)
% second argument specifying the text to display and an optional third
% arg as text to display instead of (rather than in addition to) the url
% itself. First (mandatory) arg is the url. Perhaps eventually put in
% a hypertex \special here.
%
\def\uref
#1
{
\douref
#1,,,
\finish
}
\def\douref
#1,#2,#3,#4
\finish
{
\begingroup
\unsepspaces
\pdfurl
{
#1
}
%
\setbox
0 =
\hbox
{
\ignorespaces
#3
}
%
\ifdim\wd
0 > 0pt
\unhbox
0
% third arg given, show only that
\else
\setbox
0 =
\hbox
{
\ignorespaces
#2
}
%
\ifdim\wd
0 > 0pt
\ifpdf
\unhbox
0
% PDF: 2nd arg given, show only it
\else
\unhbox
0
\
(
\code
{
#1
}
)
% DVI: 2nd arg given, show both it and url
\fi
\else
\code
{
#1
}
% only url given, so show it
\fi
\fi
\endlink
\endgroup
}
% @url synonym for @uref, since that's how everyone uses it.
%
\let\url
=
\uref
% rms does not like angle brackets --karl, 17may97.
% So now @email is just like @uref, unless we are pdf.
%
%\def\email#1{\angleleft{\tt #1}\angleright}
\ifpdf
\def\email
#1
{
\doemail
#1,,
\finish
}
\def\doemail
#1,#2,#3
\finish
{
\begingroup
\unsepspaces
\pdfurl
{
mailto:#1
}
%
\setbox
0 =
\hbox
{
\ignorespaces
#2
}
%
\ifdim\wd
0>0pt
\unhbox
0
\else\code
{
#1
}
\fi
\endlink
\endgroup
}
\else
\let\email
=
\uref
\fi
% Check if we are currently using a typewriter font. Since all the
% Computer Modern typewriter fonts have zero interword stretch (and
% shrink), and it is reasonable to expect all typewriter fonts to have
% this property, we can check that font parameter.
%
\def\ifmonospace
{
\ifdim\fontdimen
3
\font
=0pt
}
% Typeset a dimension, e.g., `in' or `pt'. The only reason for the
% argument is to make the input look right: @dmn{pt} instead of @dmn{}pt.
%
\def\dmn
#1
{
\thinspace
#1
}
\def\kbd
#1
{
\def\look
{
#1
}
\expandafter\kbdfoo\look
??
\par
}
% @l was never documented to mean ``switch to the Lisp font'',
% and it is not used as such in any manual I can find. We need it for
% Polish suppressed-l. --karl, 22sep96.
%\def\l#1{{\li #1}\null}
% Explicit font changes: @r, @sc, undocumented @ii.
\def\r
#1
{{
\rm
#1
}}
% roman font
\def\sc
#1
{{
\smallcaps
#1
}}
% smallcaps font
\def\ii
#1
{{
\it
#1
}}
% italic font
% @acronym for "FBI", "NATO", and the like.
% We print this one point size smaller, since it's intended for
% all-uppercase.
%
\def\acronym
#1
{
\doacronym
#1,,
\finish
}
\def\doacronym
#1,#2,#3
\finish
{
%
{
\selectfonts\lsize
#1
}
%
\def\temp
{
#2
}
%
\ifx\temp\empty
\else
\space
(
{
\unsepspaces
\ignorespaces
\temp
\unskip
}
)
%
\fi
}
% @abbr for "Comput. J." and the like.
% No font change, but don't do end-of-sentence spacing.
%
\def\abbr
#1
{
\doabbr
#1,,
\finish
}
\def\doabbr
#1,#2,#3
\finish
{
%
{
\plainfrenchspacing
#1
}
%
\def\temp
{
#2
}
%
\ifx\temp\empty
\else
\space
(
{
\unsepspaces
\ignorespaces
\temp
\unskip
}
)
%
\fi
}
% @pounds{} is a sterling sign, which Knuth put in the CM italic font.
%
\def\pounds
{{
\it\$
}}
% @euro{} comes from a separate font, depending on the current style.
% We use the free feym* fonts from the eurosym package by Henrik
% Theiling, which support regular, slanted, bold and bold slanted (and
% "outlined" (blackboard board, sort of) versions, which we don't need).
% It is available from http://www.ctan.org/tex-archive/fonts/eurosym.
%
% Although only regular is the truly official Euro symbol, we ignore
% that. The Euro is designed to be slightly taller than the regular
% font height.
%
% feymr - regular
% feymo - slanted
% feybr - bold
% feybo - bold slanted
%
% There is no good (free) typewriter version, to my knowledge.
% A feymr10 euro is ~7.3pt wide, while a normal cmtt10 char is ~5.25pt wide.
% Hmm.
%
% Also doesn't work in math. Do we need to do math with euro symbols?
% Hope not.
%
%
\def\euro
{{
\eurofont
e
}}
\def\eurofont
{
%
% We set the font at each command, rather than predefining it in
% \textfonts and the other font-switching commands, so that
% installations which never need the symbol don't have to have the
% font installed.
%
% There is only one designed size (nominal 10pt), so we always scale
% that to the current nominal size.
%
% By the way, simply using "at 1em" works for cmr10 and the like, but
% does not work for cmbx10 and other extended/shrunken fonts.
%
\def\eurosize
{
\csname\curfontsize
nominalsize
\endcsname
}
%
%
\ifx\curfontstyle\bfstylename
% bold:
\font\thiseurofont
=
\ifusingit
{
feybo10
}{
feybr10
}
at
\eurosize
\else
% regular:
\font\thiseurofont
=
\ifusingit
{
feymo10
}{
feymr10
}
at
\eurosize
\fi
\thiseurofont
}
% @registeredsymbol - R in a circle. The font for the R should really
% be smaller yet, but lllsize is the best we can do for now.
% Adapted from the plain.tex definition of \copyright.
%
\def\registeredsymbol
{
%
$
^{{
\ooalign
{
\hfil\raise
.
07
ex
\hbox
{
\selectfonts\lllsize
R}
%
\hfil\crcr\Orb
}}
%
}
$
%
}
% @textdegree - the normal degrees sign.
%
\def\textdegree
{
$
^
\circ
$
}
% Laurent Siebenmann reports \Orb undefined with:
% Textures 1.7.7 (preloaded format=plain 93.10.14) (68K) 16 APR 2004 02:38
% so we'll define it if necessary.
%
\ifx\Orb\undefined
\def\Orb
{
\mathhexbox
20D
}
\fi
\message
{
page headings,
}
\newskip\titlepagetopglue
\titlepagetopglue
= 1.5in
\newskip\titlepagebottomglue
\titlepagebottomglue
= 2pc
% First the title page. Must do @settitle before @titlepage.
\newif\ifseenauthor
\newif\iffinishedtitlepage
% Do an implicit @contents or @shortcontents after @end titlepage if the
% user says @setcontentsaftertitlepage or @setshortcontentsaftertitlepage.
%
\newif\ifsetcontentsaftertitlepage
\let\setcontentsaftertitlepage
=
\setcontentsaftertitlepagetrue
\newif\ifsetshortcontentsaftertitlepage
\let\setshortcontentsaftertitlepage
=
\setshortcontentsaftertitlepagetrue
\parseargdef\shorttitlepage
{
\begingroup\hbox
{}
\vskip
1.5in
\chaprm
\centerline
{
#1
}
%
\endgroup\page\hbox
{}
\page
}
\envdef\titlepage
{
%
% Open one extra group, as we want to close it in the middle of \Etitlepage.
\begingroup
\parindent
=0pt
\textfonts
% Leave some space at the very top of the page.
\vglue\titlepagetopglue
% No rule at page bottom unless we print one at the top with @title.
\finishedtitlepagetrue
%
% Most title ``pages'' are actually two pages long, with space
% at the top of the second. We don't want the ragged left on the second.
\let\oldpage
=
\page
\def\page
{
%
\iffinishedtitlepage\else
\finishtitlepage
\fi
\let\page
=
\oldpage
\page
\null
}
%
}
\def\Etitlepage
{
%
\iffinishedtitlepage\else
\finishtitlepage
\fi
% It is important to do the page break before ending the group,
% because the headline and footline are only empty inside the group.
% If we use the new definition of \page, we always get a blank page
% after the title page, which we certainly don't want.
\oldpage
\endgroup
%
% Need this before the \...aftertitlepage checks so that if they are
% in effect the toc pages will come out with page numbers.
\HEADINGSon
%
% If they want short, they certainly want long too.
\ifsetshortcontentsaftertitlepage
\shortcontents
\contents
\global\let\shortcontents
=
\relax
\global\let\contents
=
\relax
\fi
%
\ifsetcontentsaftertitlepage
\contents
\global\let\contents
=
\relax
\global\let\shortcontents
=
\relax
\fi
}
\def\finishtitlepage
{
%
\vskip
4pt
\hrule
height 2pt width
\hsize
\vskip\titlepagebottomglue
\finishedtitlepagetrue
}
%%% Macros to be used within @titlepage:
\let\subtitlerm
=
\tenrm
\def\subtitlefont
{
\subtitlerm
\normalbaselineskip
= 13pt
\normalbaselines
}
\def\authorfont
{
\authorrm
\normalbaselineskip
= 16pt
\normalbaselines
\let\tt
=
\authortt
}
\parseargdef\title
{
%
\checkenv\titlepage
\leftline
{
\titlefonts\rm
#1
}
% print a rule at the page bottom also.
\finishedtitlepagefalse
\vskip
4pt
\hrule
height 4pt width
\hsize
\vskip
4pt
}
\parseargdef\subtitle
{
%
\checkenv\titlepage
{
\subtitlefont
\rightline
{
#1
}}
%
}
% @author should come last, but may come many times.
% It can also be used inside @quotation.
%
\parseargdef\author
{
%
\def\temp
{
\quotation
}
%
\ifx\thisenv\temp
\def\quotationauthor
{
#1
}
% printed in \Equotation.
\else
\checkenv\titlepage
\ifseenauthor\else
\vskip
0pt plus 1filll
\seenauthortrue
\fi
{
\authorfont
\leftline
{
#1
}}
%
\fi
}
%%% Set up page headings and footings.
\let\thispage
=
\folio
\newtoks\evenheadline
% headline on even pages
\newtoks\oddheadline
% headline on odd pages
\newtoks\evenfootline
% footline on even pages
\newtoks\oddfootline
% footline on odd pages
% Now make TeX use those variables
\headline
=
{{
\textfonts\rm
\ifodd\pageno
\the\oddheadline
\else
\the\evenheadline
\fi
}}
\footline
=
{{
\textfonts\rm
\ifodd\pageno
\the\oddfootline
\else
\the\evenfootline
\fi
}
\HEADINGShook
}
\let\HEADINGShook
=
\relax
% Commands to set those variables.
% For example, this is what @headings on does
% @evenheading @thistitle|@thispage|@thischapter
% @oddheading @thischapter|@thispage|@thistitle
% @evenfooting @thisfile||
% @oddfooting ||@thisfile
\def\evenheading
{
\parsearg\evenheadingxxx
}
\def\evenheadingxxx
#1
{
\evenheadingyyy
#1
\|\|\|\|\finish
}
\def\evenheadingyyy
#1
\|
#2
\|
#3
\|
#4
\finish
{
%
\global\evenheadline
=
{
\rlap
{
\centerline
{
#2
}}
\line
{
#1
\hfil
#3
}}}
\def\oddheading
{
\parsearg\oddheadingxxx
}
\def\oddheadingxxx
#1
{
\oddheadingyyy
#1
\|\|\|\|\finish
}
\def\oddheadingyyy
#1
\|
#2
\|
#3
\|
#4
\finish
{
%
\global\oddheadline
=
{
\rlap
{
\centerline
{
#2
}}
\line
{
#1
\hfil
#3
}}}
\parseargdef\everyheading
{
\oddheadingxxx
{
#1
}
\evenheadingxxx
{
#1
}}
%
\def\evenfooting
{
\parsearg\evenfootingxxx
}
\def\evenfootingxxx
#1
{
\evenfootingyyy
#1
\|\|\|\|\finish
}
\def\evenfootingyyy
#1
\|
#2
\|
#3
\|
#4
\finish
{
%
\global\evenfootline
=
{
\rlap
{
\centerline
{
#2
}}
\line
{
#1
\hfil
#3
}}}
\def\oddfooting
{
\parsearg\oddfootingxxx
}
\def\oddfootingxxx
#1
{
\oddfootingyyy
#1
\|\|\|\|\finish
}
\def\oddfootingyyy
#1
\|
#2
\|
#3
\|
#4
\finish
{
%
\global\oddfootline
=
{
\rlap
{
\centerline
{
#2
}}
\line
{
#1
\hfil
#3
}}
%
%
% Leave some space for the footline. Hopefully ok to assume
% @evenfooting will not be used by itself.
\global\advance\pageheight
by -12pt
\global\advance\vsize
by -12pt
}
\parseargdef\everyfooting
{
\oddfootingxxx
{
#1
}
\evenfootingxxx
{
#1
}}
% @headings double turns headings on for double-sided printing.
% @headings single turns headings on for single-sided printing.
% @headings off turns them off.
% @headings on same as @headings double, retained for compatibility.
% @headings after turns on double-sided headings after this page.
% @headings doubleafter turns on double-sided headings after this page.
% @headings singleafter turns on single-sided headings after this page.
% By default, they are off at the start of a document,
% and turned `on' after @end titlepage.
\def\headings
#1
{
\csname
HEADINGS#1
\endcsname
}
\def\HEADINGSoff
{
%
\global\evenheadline
=
{
\hfil
}
\global\evenfootline
=
{
\hfil
}
\global\oddheadline
=
{
\hfil
}
\global\oddfootline
=
{
\hfil
}}
\HEADINGSoff
% When we turn headings on, set the page number to 1.
% For double-sided printing, put current file name in lower left corner,
% chapter name on inside top of right hand pages, document
% title on inside top of left hand pages, and page numbers on outside top
% edge of all pages.
\def\HEADINGSdouble
{
%
\global\pageno
=1
\global\evenfootline
=
{
\hfil
}
\global\oddfootline
=
{
\hfil
}
\global\evenheadline
=
{
\line
{
\folio\hfil\thistitle
}}
\global\oddheadline
=
{
\line
{
\thischapter\hfil\folio
}}
\global\let\contentsalignmacro
=
\chapoddpage
}
\let\contentsalignmacro
=
\chappager
% For single-sided printing, chapter title goes across top left of page,
% page number on top right.
\def\HEADINGSsingle
{
%
\global\pageno
=1
\global\evenfootline
=
{
\hfil
}
\global\oddfootline
=
{
\hfil
}
\global\evenheadline
=
{
\line
{
\thischapter\hfil\folio
}}
\global\oddheadline
=
{
\line
{
\thischapter\hfil\folio
}}
\global\let\contentsalignmacro
=
\chappager
}
\def\HEADINGSon
{
\HEADINGSdouble
}
\def\HEADINGSafter
{
\let\HEADINGShook
=
\HEADINGSdoublex
}
\let\HEADINGSdoubleafter
=
\HEADINGSafter
\def\HEADINGSdoublex
{
%
\global\evenfootline
=
{
\hfil
}
\global\oddfootline
=
{
\hfil
}
\global\evenheadline
=
{
\line
{
\folio\hfil\thistitle
}}
\global\oddheadline
=
{
\line
{
\thischapter\hfil\folio
}}
\global\let\contentsalignmacro
=
\chapoddpage
}
\def\HEADINGSsingleafter
{
\let\HEADINGShook
=
\HEADINGSsinglex
}
\def\HEADINGSsinglex
{
%
\global\evenfootline
=
{
\hfil
}
\global\oddfootline
=
{
\hfil
}
\global\evenheadline
=
{
\line
{
\thischapter\hfil\folio
}}
\global\oddheadline
=
{
\line
{
\thischapter\hfil\folio
}}
\global\let\contentsalignmacro
=
\chappager
}
% Subroutines used in generating headings
% This produces Day Month Year style of output.
% Only define if not already defined, in case a txi-??.tex file has set
% up a different format (e.g., txi-cs.tex does this).
\ifx\today\undefined
\def\today
{
%
\number\day\space
\ifcase\month
\or\putwordMJan\or\putwordMFeb\or\putwordMMar\or\putwordMApr
\or\putwordMMay\or\putwordMJun\or\putwordMJul\or\putwordMAug
\or\putwordMSep\or\putwordMOct\or\putwordMNov\or\putwordMDec
\fi
\space\number\year
}
\fi
% @settitle line... specifies the title of the document, for headings.
% It generates no output of its own.
\def\thistitle
{
\putwordNoTitle
}
\def\settitle
{
\parsearg
{
\gdef\thistitle
}}
\message
{
tables,
}
% Tables -- @table, @ftable, @vtable, @item(x).
% default indentation of table text
\newdimen\tableindent
\tableindent
=.8in
% default indentation of @itemize and @enumerate text
\newdimen\itemindent
\itemindent
=.3in
% margin between end of table item and start of table text.
\newdimen\itemmargin
\itemmargin
=.1in
% used internally for \itemindent minus \itemmargin
\newdimen\itemmax
% Note @table, @ftable, and @vtable define @item, @itemx, etc., with
% these defs.
% They also define \itemindex
% to index the item name in whatever manner is desired (perhaps none).
\newif\ifitemxneedsnegativevskip
\def\itemxpar
{
\par\ifitemxneedsnegativevskip\nobreak\vskip
-
\parskip\nobreak\fi
}
\def\internalBitem
{
\smallbreak
\parsearg\itemzzz
}
\def\internalBitemx
{
\itemxpar
\parsearg\itemzzz
}
\def\itemzzz
#1
{
\begingroup
%
\advance\hsize
by -
\rightskip
\advance\hsize
by -
\tableindent
\setbox
0=
\hbox
{
\itemindicate
{
#1
}}
%
\itemindex
{
#1
}
%
\nobreak
% This prevents a break before @itemx.
%
% If the item text does not fit in the space we have, put it on a line
% by itself, and do not allow a page break either before or after that
% line. We do not start a paragraph here because then if the next
% command is, e.g., @kindex, the whatsit would get put into the
% horizontal list on a line by itself, resulting in extra blank space.
\ifdim
\wd
0>
\itemmax
%
% Make this a paragraph so we get the \parskip glue and wrapping,
% but leave it ragged-right.
\begingroup
\advance\leftskip
by-
\tableindent
\advance\hsize
by
\tableindent
\advance\rightskip
by0pt plus1fil
\leavevmode\unhbox
0
\par
\endgroup
%
% We're going to be starting a paragraph, but we don't want the
% \parskip glue -- logically it's part of the @item we just started.
\nobreak
\vskip
-
\parskip
%
% Stop a page break at the \parskip glue coming up. However, if
% what follows is an environment such as @example, there will be no
% \parskip glue; then the negative vskip we just inserted would
% cause the example and the item to crash together. So we use this
% bizarre value of 10001 as a signal to \aboveenvbreak to insert
% \parskip glue after all. Section titles are handled this way also.
%
\penalty
10001
\endgroup
\itemxneedsnegativevskipfalse
\else
% The item text fits into the space. Start a paragraph, so that the
% following text (if any) will end up on the same line.
\noindent
% Do this with kerns and \unhbox so that if there is a footnote in
% the item text, it can migrate to the main vertical list and
% eventually be printed.
\nobreak\kern
-
\tableindent
\dimen
0 =
\itemmax
\advance\dimen
0 by
\itemmargin
\advance\dimen
0 by -
\wd
0
\unhbox
0
\nobreak\kern\dimen
0
\endgroup
\itemxneedsnegativevskiptrue
\fi
}
\def\item
{
\errmessage
{
@item while not in a list environment
}}
\def\itemx
{
\errmessage
{
@itemx while not in a list environment
}}
% @table, @ftable, @vtable.
\envdef\table
{
%
\let\itemindex\gobble
\tablecheck
{
table
}
%
}
\envdef\ftable
{
%
\def\itemindex
##1
{
\doind
{
fn
}{
\code
{
##1
}}}
%
\tablecheck
{
ftable
}
%
}
\envdef\vtable
{
%
\def\itemindex
##1
{
\doind
{
vr
}{
\code
{
##1
}}}
%
\tablecheck
{
vtable
}
%
}
\def\tablecheck
#1
{
%
\ifnum
\the\catcode
`
\^
^
M=
\active
\endgroup
\errmessage
{
This command won't work in this context; perhaps the problem is
that we are
\inenvironment\thisenv
}
%
\def\next
{
\doignore
{
#1
}}
%
\else
\let\next\tablex
\fi
\next
}
\def\tablex
#1
{
%
\def\itemindicate
{
#1
}
%
\parsearg\tabley
}
\def\tabley
#1
{
%
{
%
\makevalueexpandable
\edef\temp
{
\noexpand\tablez
#1
\space\space\space
}
%
\expandafter
}
\temp
\endtablez
}
\def\tablez
#1 #2 #3 #4
\endtablez
{
%
\aboveenvbreak
\ifnum
0#1>0
\advance
\leftskip
by #1
\mil
\fi
\ifnum
0#2>0
\tableindent
=#2
\mil
\fi
\ifnum
0#3>0
\advance
\rightskip
by #3
\mil
\fi
\itemmax
=
\tableindent
\advance
\itemmax
by -
\itemmargin
\advance
\leftskip
by
\tableindent
\exdentamount
=
\tableindent
\parindent
= 0pt
\parskip
=
\smallskipamount
\ifdim
\parskip
=0pt
\parskip
=2pt
\fi
\let\item
=
\internalBitem
\let\itemx
=
\internalBitemx
}
\def\Etable
{
\endgraf\afterenvbreak
}
\let\Eftable\Etable
\let\Evtable\Etable
\let\Eitemize\Etable
\let\Eenumerate\Etable
% This is the counter used by @enumerate, which is really @itemize
\newcount
\itemno
\envdef\itemize
{
\parsearg\doitemize
}
\def\doitemize
#1
{
%
\aboveenvbreak
\itemmax
=
\itemindent
\advance\itemmax
by -
\itemmargin
\advance\leftskip
by
\itemindent
\exdentamount
=
\itemindent
\parindent
=0pt
\parskip
=
\smallskipamount
\ifdim\parskip
=0pt
\parskip
=2pt
\fi
\def\itemcontents
{
#1
}
%
% @itemize with no arg is equivalent to @itemize @bullet.
\ifx\itemcontents\empty\def\itemcontents
{
\bullet
}
\fi
\let\item
=
\itemizeitem
}
% Definition of @item while inside @itemize and @enumerate.
%
\def\itemizeitem
{
%
\advance\itemno
by 1
% for enumerations
{
\let\par
=
\endgraf
\smallbreak
}
% reasonable place to break
{
%
% If the document has an @itemize directly after a section title, a
% \nobreak will be last on the list, and \sectionheading will have
% done a \vskip-\parskip. In that case, we don't want to zero
% parskip, or the item text will crash with the heading. On the
% other hand, when there is normal text preceding the item (as there
% usually is), we do want to zero parskip, or there would be too much
% space. In that case, we won't have a \nobreak before. At least
% that's the theory.
\ifnum\lastpenalty
<10000
\parskip
=0in
\fi
\noindent
\hbox
to 0pt
{
\hss
\itemcontents
\kern\itemmargin
}
%
\vadjust
{
\penalty
1200
}}
% not good to break after first line of item.
\flushcr
}
% \splitoff TOKENS\endmark defines \first to be the first token in
% TOKENS, and \rest to be the remainder.
%
\def\splitoff
#1#2
\endmark
{
\def\first
{
#1
}
\def\rest
{
#2
}}
%
% Allow an optional argument of an uppercase letter, lowercase letter,
% or number, to specify the first label in the enumerated list. No
% argument is the same as `1'.
%
\envparseargdef\enumerate
{
\enumeratey
#1
\endenumeratey
}
\def\enumeratey
#1 #2
\endenumeratey
{
%
% If we were given no argument, pretend we were given `1'.
\def\thearg
{
#1
}
%
\ifx\thearg\empty
\def\thearg
{
1
}
\fi
%
% Detect if the argument is a single token. If so, it might be a
% letter. Otherwise, the only valid thing it can be is a number.
% (We will always have one token, because of the test we just made.
% This is a good thing, since \splitoff doesn't work given nothing at
% all -- the first parameter is undelimited.)
\expandafter\splitoff\thearg\endmark
\ifx\rest\empty
% Only one token in the argument. It could still be anything.
% A ``lowercase letter'' is one whose \lccode is nonzero.
% An ``uppercase letter'' is one whose \lccode is both nonzero, and
% not equal to itself.
% Otherwise, we assume it's a number.
%
% We need the \relax at the end of the \ifnum lines to stop TeX from
% continuing to look for a <number>.
%
\ifnum\lccode\expandafter
`
\thearg
=0
\relax
\numericenumerate
% a number (we hope)
\else
% It's a letter.
\ifnum\lccode\expandafter
`
\thearg
=
\expandafter
`
\thearg\relax
\lowercaseenumerate
% lowercase letter
\else
\uppercaseenumerate
% uppercase letter
\fi
\fi
\else
% Multiple tokens in the argument. We hope it's a number.
\numericenumerate
\fi
}
% An @enumerate whose labels are integers. The starting integer is
% given in \thearg.
%
\def\numericenumerate
{
%
\itemno
=
\thearg
\startenumeration
{
\the\itemno
}
%
}
% The starting (lowercase) letter is in \thearg.
\def\lowercaseenumerate
{
%
\itemno
=
\expandafter
`
\thearg
\startenumeration
{
%
% Be sure we're not beyond the end of the alphabet.
\ifnum\itemno
=0
\errmessage
{
No more lowercase letters in @enumerate; get a bigger
alphabet
}
%
\fi
\char\lccode\itemno
}
%
}
% The starting (uppercase) letter is in \thearg.
\def\uppercaseenumerate
{
%
\itemno
=
\expandafter
`
\thearg
\startenumeration
{
%
% Be sure we're not beyond the end of the alphabet.
\ifnum\itemno
=0
\errmessage
{
No more uppercase letters in @enumerate; get a bigger
alphabet
}
\fi
\char\uccode\itemno
}
%
}
% Call \doitemize, adding a period to the first argument and supplying the
% common last two arguments. Also subtract one from the initial value in
% \itemno, since @item increments \itemno.
%
\def\startenumeration
#1
{
%
\advance\itemno
by -1
\doitemize
{
#1.
}
\flushcr
}
% @alphaenumerate and @capsenumerate are abbreviations for giving an arg
% to @enumerate.
%
\def\alphaenumerate
{
\enumerate
{
a
}}
\def\capsenumerate
{
\enumerate
{
A
}}
\def\Ealphaenumerate
{
\Eenumerate
}
\def\Ecapsenumerate
{
\Eenumerate
}
% @multitable macros
% Amy Hendrickson, 8/18/94, 3/6/96
%
% @multitable ... @end multitable will make as many columns as desired.
% Contents of each column will wrap at width given in preamble. Width
% can be specified either with sample text given in a template line,
% or in percent of \hsize, the current width of text on page.
% Table can continue over pages but will only break between lines.
% To make preamble:
%
% Either define widths of columns in terms of percent of \hsize:
% @multitable @columnfractions .25 .3 .45
% @item ...
%
% Numbers following @columnfractions are the percent of the total
% current hsize to be used for each column. You may use as many
% columns as desired.
% Or use a template:
% @multitable {Column 1 template} {Column 2 template} {Column 3 template}
% @item ...
% using the widest term desired in each column.
% Each new table line starts with @item, each subsequent new column
% starts with @tab. Empty columns may be produced by supplying @tab's
% with nothing between them for as many times as empty columns are needed,
% ie, @tab@tab@tab will produce two empty columns.
% @item, @tab do not need to be on their own lines, but it will not hurt
% if they are.
% Sample multitable:
% @multitable {Column 1 template} {Column 2 template} {Column 3 template}
% @item first col stuff @tab second col stuff @tab third col
% @item
% first col stuff
% @tab
% second col stuff
% @tab
% third col
% @item first col stuff @tab second col stuff
% @tab Many paragraphs of text may be used in any column.
%
% They will wrap at the width determined by the template.
% @item@tab@tab This will be in third column.
% @end multitable
% Default dimensions may be reset by user.
% @multitableparskip is vertical space between paragraphs in table.
% @multitableparindent is paragraph indent in table.
% @multitablecolmargin is horizontal space to be left between columns.
% @multitablelinespace is space to leave between table items, baseline
% to baseline.
% 0pt means it depends on current normal line spacing.
%
\newskip\multitableparskip
\newskip\multitableparindent
\newdimen\multitablecolspace
\newskip\multitablelinespace
\multitableparskip
=0pt
\multitableparindent
=6pt
\multitablecolspace
=12pt
\multitablelinespace
=0pt
% Macros used to set up halign preamble:
%
\let\endsetuptable\relax
\def\xendsetuptable
{
\endsetuptable
}
\let\columnfractions\relax
\def\xcolumnfractions
{
\columnfractions
}
\newif\ifsetpercent
% #1 is the @columnfraction, usually a decimal number like .5, but might
% be just 1. We just use it, whatever it is.
%
\def\pickupwholefraction
#1
{
%
\global\advance\colcount
by 1
\expandafter\xdef\csname
col
\the\colcount\endcsname
{
#1
\hsize
}
%
\setuptable
}
\newcount\colcount
\def\setuptable
#1
{
%
\def\firstarg
{
#1
}
%
\ifx\firstarg\xendsetuptable
\let\go
=
\relax
\else
\ifx\firstarg\xcolumnfractions
\global\setpercenttrue
\else
\ifsetpercent
\let\go\pickupwholefraction
\else
\global\advance\colcount
by 1
\setbox
0=
\hbox
{
#1
\unskip\space
}
% Add a normal word space as a
% separator; typically that is always in the input, anyway.
\expandafter\xdef\csname
col
\the\colcount\endcsname
{
\the\wd
0
}
%
\fi
\fi
\ifx\go\pickupwholefraction
% Put the argument back for the \pickupwholefraction call, so
% we'll always have a period there to be parsed.
\def\go
{
\pickupwholefraction
#1
}
%
\else
\let\go
=
\setuptable
\fi
%
\fi
\go
}
% multitable-only commands.
%
% @headitem starts a heading row, which we typeset in bold.
% Assignments have to be global since we are inside the implicit group
% of an alignment entry. Note that \everycr resets \everytab.
\def\headitem
{
\checkenv\multitable
\crcr
\global\everytab
=
{
\bf
}
\the\everytab
}
%
%
% A \tab used to include \hskip1sp. But then the space in a template
% line is not enough. That is bad. So let's go back to just `&' until
% we encounter the problem it was intended to solve again.
% --karl, nathan@acm.org, 20apr99.
\def\tab
{
\checkenv\multitable
&
\the\everytab
}
%
% @multitable ... @end multitable definitions:
%
\newtoks\everytab
% insert after every tab.
%
\envdef\multitable
{
%
\vskip\parskip
\startsavinginserts
%
% @item within a multitable starts a normal row.
% We use \def instead of \let so that if one of the multitable entries
% contains an @itemize, we don't choke on the \item (seen as \crcr aka
% \endtemplate) expanding \doitemize.
\def\item
{
\crcr
}
%
%
\tolerance
=9500
\hbadness
=9500
\setmultitablespacing
\parskip
=
\multitableparskip
\parindent
=
\multitableparindent
\overfullrule
=0pt
\global\colcount
=0
%
\everycr
=
{
%
\noalign
{
%
\global\everytab
=
{}
%
\global\colcount
=0
% Reset the column counter.
% Check for saved footnotes, etc.
\checkinserts
% Keeps underfull box messages off when table breaks over pages.
%\filbreak
% Maybe so, but it also creates really weird page breaks when the
% table breaks over pages. Wouldn't \vfil be better? Wait until the
% problem manifests itself, so it can be fixed for real --karl.
}
%
}
%
%
\parsearg\domultitable
}
\def\domultitable
#1
{
%
% To parse everything between @multitable and @item:
\setuptable
#1
\endsetuptable
%
% This preamble sets up a generic column definition, which will
% be used as many times as user calls for columns.
% \vtop will set a single line and will also let text wrap and
% continue for many paragraphs if desired.
\halign\bgroup
&
%
\global\advance\colcount
by 1
\multistrut
\vtop
{
%
% Use the current \colcount to find the correct column width:
\hsize
=
\expandafter\csname
col
\the\colcount\endcsname
%
% In order to keep entries from bumping into each other
% we will add a \leftskip of \multitablecolspace to all columns after
% the first one.
%
% If a template has been used, we will add \multitablecolspace
% to the width of each template entry.
%
% If the user has set preamble in terms of percent of \hsize we will
% use that dimension as the width of the column, and the \leftskip
% will keep entries from bumping into each other. Table will start at
% left margin and final column will justify at right margin.
%
% Make sure we don't inherit \rightskip from the outer environment.
\rightskip
=0pt
\ifnum\colcount
=1
% The first column will be indented with the surrounding text.
\advance\hsize
by
\leftskip
\else
\ifsetpercent
\else
% If user has not set preamble in terms of percent of \hsize
% we will advance \hsize by \multitablecolspace.
\advance\hsize
by
\multitablecolspace
\fi
% In either case we will make \leftskip=\multitablecolspace:
\leftskip
=
\multitablecolspace
\fi
% Ignoring space at the beginning and end avoids an occasional spurious
% blank line, when TeX decides to break the line at the space before the
% box from the multistrut, so the strut ends up on a line by itself.
% For example:
% @multitable @columnfractions .11 .89
% @item @code{#}
% @tab Legal holiday which is valid in major parts of the whole country.
% Is automatically provided with highlighting sequences respectively
% marking characters.
\noindent\ignorespaces
##
\unskip\multistrut
}
\cr
}
\def\Emultitable
{
%
\crcr
\egroup
% end the \halign
\global\setpercentfalse
}
\def\setmultitablespacing
{
%
\def\multistrut
{
\strut
}
% just use the standard line spacing
%
% Compute \multitablelinespace (if not defined by user) for use in
% \multitableparskip calculation. We used define \multistrut based on
% this, but (ironically) that caused the spacing to be off.
% See bug-texinfo report from Werner Lemberg, 31 Oct 2004 12:52:20 +0100.
\ifdim\multitablelinespace
=0pt
\setbox
0=
\vbox
{
X
}
\global\multitablelinespace
=
\the\baselineskip
\global\advance\multitablelinespace
by-
\ht
0
\fi
%% Test to see if parskip is larger than space between lines of
%% table. If not, do nothing.
%% If so, set to same dimension as multitablelinespace.
\ifdim\multitableparskip
>
\multitablelinespace
\global\multitableparskip
=
\multitablelinespace
\global\advance\multitableparskip
-7pt
%% to keep parskip somewhat smaller
%% than skip between lines in the table.
\fi
%
\ifdim\multitableparskip
=0pt
\global\multitableparskip
=
\multitablelinespace
\global\advance\multitableparskip
-7pt
%% to keep parskip somewhat smaller
%% than skip between lines in the table.
\fi
}
\message
{
conditionals,
}
% @iftex, @ifnotdocbook, @ifnothtml, @ifnotinfo, @ifnotplaintext,
% @ifnotxml always succeed. They currently do nothing; we don't
% attempt to check whether the conditionals are properly nested. But we
% have to remember that they are conditionals, so that @end doesn't
% attempt to close an environment group.
%
\def\makecond
#1
{
%
\expandafter\let\csname
#1
\endcsname
=
\relax
\expandafter\let\csname
iscond.#1
\endcsname
= 1
}
\makecond
{
iftex
}
\makecond
{
ifnotdocbook
}
\makecond
{
ifnothtml
}
\makecond
{
ifnotinfo
}
\makecond
{
ifnotplaintext
}
\makecond
{
ifnotxml
}
% Ignore @ignore, @ifhtml, @ifinfo, and the like.
%
\def\direntry
{
\doignore
{
direntry
}}
\def\documentdescription
{
\doignore
{
documentdescription
}}
\def\docbook
{
\doignore
{
docbook
}}
\def\html
{
\doignore
{
html
}}
\def\ifdocbook
{
\doignore
{
ifdocbook
}}
\def\ifhtml
{
\doignore
{
ifhtml
}}
\def\ifinfo
{
\doignore
{
ifinfo
}}
\def\ifnottex
{
\doignore
{
ifnottex
}}
\def\ifplaintext
{
\doignore
{
ifplaintext
}}
\def\ifxml
{
\doignore
{
ifxml
}}
\def\ignore
{
\doignore
{
ignore
}}
\def\menu
{
\doignore
{
menu
}}
\def\xml
{
\doignore
{
xml
}}
% Ignore text until a line `@end #1', keeping track of nested conditionals.
%
% A count to remember the depth of nesting.
\newcount\doignorecount
\def\doignore
#1
{
\begingroup
% Scan in ``verbatim'' mode:
\obeylines
\catcode
`
\@
=
\other
\catcode
`
\{
=
\other
\catcode
`
\}
=
\other
%
% Make sure that spaces turn into tokens that match what \doignoretext wants.
\spaceisspace
%
% Count number of #1's that we've seen.
\doignorecount
= 0
%
% Swallow text until we reach the matching `@end #1'.
\dodoignore
{
#1
}
%
}
{
\catcode
`
_
=11
% We want to use \_STOP_ which cannot appear in texinfo source.
\obeylines
%
%
\gdef\dodoignore
#1
{
%
% #1 contains the command name as a string, e.g., `ifinfo'.
%
% Define a command to find the next `@end #1'.
\long\def\doignoretext
##1
^^
M@end #1
{
%
\doignoretextyyy
##1
^^
M@#1
\_
STOP
_}
%
%
% And this command to find another #1 command, at the beginning of a
% line. (Otherwise, we would consider a line `@c @ifset', for
% example, to count as an @ifset for nesting.)
\long\def\doignoretextyyy
##1
^^
M@#1##2
\_
STOP
_{
\doignoreyyy
{
##2
}
\_
STOP
_}
%
%
% And now expand that command.
\doignoretext
^^
M
%
}
%
}
\def\doignoreyyy
#1
{
%
\def\temp
{
#1
}
%
\ifx\temp\empty
% Nothing found.
\let\next\doignoretextzzz
\else
% Found a nested condition, ...
\advance\doignorecount
by 1
\let\next\doignoretextyyy
% ..., look for another.
% If we're here, #1 ends with ^^M\ifinfo (for example).
\fi
\next
#1
% the token \_STOP_ is present just after this macro.
}
% We have to swallow the remaining "\_STOP_".
%
\def\doignoretextzzz
#1
{
%
\ifnum\doignorecount
= 0
% We have just found the outermost @end.
\let\next\enddoignore
\else
% Still inside a nested condition.
\advance\doignorecount
by -1
\let\next\doignoretext
% Look for the next @end.
\fi
\next
}
% Finish off ignored text.
{
\obeylines
%
% Ignore anything after the last `@end #1'; this matters in verbatim
% environments, where otherwise the newline after an ignored conditional
% would result in a blank line in the output.
\gdef\enddoignore
#1
^^
M
{
\endgroup\ignorespaces
}
%
}
% @set VAR sets the variable VAR to an empty value.
% @set VAR REST-OF-LINE sets VAR to the value REST-OF-LINE.
%
% Since we want to separate VAR from REST-OF-LINE (which might be
% empty), we can't just use \parsearg; we have to insert a space of our
% own to delimit the rest of the line, and then take it out again if we
% didn't need it.
% We rely on the fact that \parsearg sets \catcode`\ =10.
%
\parseargdef\set
{
\setyyy
#1
\endsetyyy
}
\def\setyyy
#1 #2
\endsetyyy
{
%
{
%
\makevalueexpandable
\def\temp
{
#2
}
%
\edef\next
{
\gdef\makecsname
{
SET#1
}}
%
\ifx\temp\empty
\next
{}
%
\else
\setzzz
#2
\endsetzzz
\fi
}
%
}
% Remove the trailing space \setxxx inserted.
\def\setzzz
#1
\endsetzzz
{
\next
{
#1
}}
% @clear VAR clears (i.e., unsets) the variable VAR.
%
\parseargdef\clear
{
%
{
%
\makevalueexpandable
\global\expandafter\let\csname
SET#1
\endcsname
=
\relax
}
%
}
% @value{foo} gets the text saved in variable foo.
\def\value
{
\begingroup\makevalueexpandable\valuexxx
}
\def\valuexxx
#1
{
\expandablevalue
{
#1
}
\endgroup
}
{
\catcode
`
\-
=
\active
\catcode
`
\_
=
\active
%
\gdef\makevalueexpandable
{
%
\let\value
=
\expandablevalue
% We don't want these characters active, ...
\catcode
`
\-
=
\other
\catcode
`
\_
=
\other
% ..., but we might end up with active ones in the argument if
% we're called from @code, as @code{@value{foo-bar_}}, though.
% So \let them to their normal equivalents.
\let
-
\realdash
\let
_
\normalunderscore
}
}
% We have this subroutine so that we can handle at least some @value's
% properly in indexes (we call \makevalueexpandable in \indexdummies).
% The command has to be fully expandable (if the variable is set), since
% the result winds up in the index file. This means that if the
% variable's value contains other Texinfo commands, it's almost certain
% it will fail (although perhaps we could fix that with sufficient work
% to do a one-level expansion on the result, instead of complete).
%
\def\expandablevalue
#1
{
%
\expandafter\ifx\csname
SET#1
\endcsname\relax
{
[No value for ``#1'']
}
%
\message
{
Variable `#1', used in @value, is not set.
}
%
\else
\csname
SET#1
\endcsname
\fi
}
% @ifset VAR ... @end ifset reads the `...' iff VAR has been defined
% with @set.
%
% To get special treatment of `@end ifset,' call \makeond and the redefine.
%
\makecond
{
ifset
}
\def\ifset
{
\parsearg
{
\doifset
{
\let\next
=
\ifsetfail
}}}
\def\doifset
#1#2
{
%
{
%
\makevalueexpandable
\let\next
=
\empty
\expandafter\ifx\csname
SET#2
\endcsname\relax
#1
% If not set, redefine \next.
\fi
\expandafter
}
\next
}
\def\ifsetfail
{
\doignore
{
ifset
}}
% @ifclear VAR ... @end ifclear reads the `...' iff VAR has never been
% defined with @set, or has been undefined with @clear.
%
% The `\else' inside the `\doifset' parameter is a trick to reuse the
% above code: if the variable is not set, do nothing, if it is set,
% then redefine \next to \ifclearfail.
%
\makecond
{
ifclear
}
\def\ifclear
{
\parsearg
{
\doifset
{
\else
\let\next
=
\ifclearfail
}}}
\def\ifclearfail
{
\doignore
{
ifclear
}}
% @dircategory CATEGORY -- specify a category of the dir file
% which this file should belong to. Ignore this in TeX.
\let\dircategory
=
\comment
% @defininfoenclose.
\let\definfoenclose
=
\comment
\message
{
indexing,
}
% Index generation facilities
% Define \newwrite to be identical to plain tex's \newwrite
% except not \outer, so it can be used within macros and \if's.
\edef\newwrite
{
\makecsname
{
ptexnewwrite
}}
% \newindex {foo} defines an index named foo.
% It automatically defines \fooindex such that
% \fooindex ...rest of line... puts an entry in the index foo.
% It also defines \fooindfile to be the number of the output channel for
% the file that accumulates this index. The file's extension is foo.
% The name of an index should be no more than 2 characters long
% for the sake of vms.
%
\def\newindex
#1
{
%
\iflinks
\expandafter\newwrite
\csname
#1indfile
\endcsname
\openout
\csname
#1indfile
\endcsname
\jobname
.#1
% Open the file
\fi
\expandafter\xdef\csname
#1index
\endcsname
{
% % Define @#1index
\noexpand\doindex
{
#1
}}
}
% @defindex foo == \newindex{foo}
%
\def\defindex
{
\parsearg\newindex
}
% Define @defcodeindex, like @defindex except put all entries in @code.
%
\def\defcodeindex
{
\parsearg\newcodeindex
}
%
\def\newcodeindex
#1
{
%
\iflinks
\expandafter\newwrite
\csname
#1indfile
\endcsname
\openout
\csname
#1indfile
\endcsname
\jobname
.#1
\fi
\expandafter\xdef\csname
#1index
\endcsname
{
%
\noexpand\docodeindex
{
#1
}}
%
}
% @synindex foo bar makes index foo feed into index bar.
% Do this instead of @defindex foo if you don't want it as a separate index.
%
% @syncodeindex foo bar similar, but put all entries made for index foo
% inside @code.
%
\def\synindex
#1 #2
{
\dosynindex\doindex
{
#1
}{
#2
}}
\def\syncodeindex
#1 #2
{
\dosynindex\docodeindex
{
#1
}{
#2
}}
% #1 is \doindex or \docodeindex, #2 the index getting redefined (foo),
% #3 the target index (bar).
\def\dosynindex
#1#2#3
{
%
% Only do \closeout if we haven't already done it, else we'll end up
% closing the target index.
\expandafter
\ifx\csname
donesynindex#2
\endcsname
\undefined
% The \closeout helps reduce unnecessary open files; the limit on the
% Acorn RISC OS is a mere 16 files.
\expandafter\closeout\csname
#2indfile
\endcsname
\expandafter\let\csname\donesynindex
#2
\endcsname
= 1
\fi
% redefine \fooindfile:
\expandafter\let\expandafter\temp\expandafter
=
\csname
#3indfile
\endcsname
\expandafter\let\csname
#2indfile
\endcsname
=
\temp
% redefine \fooindex:
\expandafter\xdef\csname
#2index
\endcsname
{
\noexpand
#1
{
#3
}}
%
}
% Define \doindex, the driver for all \fooindex macros.
% Argument #1 is generated by the calling \fooindex macro,
% and it is "foo", the name of the index.
% \doindex just uses \parsearg; it calls \doind for the actual work.
% This is because \doind is more useful to call from other macros.
% There is also \dosubind {index}{topic}{subtopic}
% which makes an entry in a two-level index such as the operation index.
\def\doindex
#1
{
\edef\indexname
{
#1
}
\parsearg\singleindexer
}
\def\singleindexer
#1
{
\doind
{
\indexname
}{
#1
}}
% like the previous two, but they put @code around the argument.
\def\docodeindex
#1
{
\edef\indexname
{
#1
}
\parsearg\singlecodeindexer
}
\def\singlecodeindexer
#1
{
\doind
{
\indexname
}{
\code
{
#1
}}}
% Take care of Texinfo commands that can appear in an index entry.
% Since there are some commands we want to expand, and others we don't,
% we have to laboriously prevent expansion for those that we don't.
%
\def\indexdummies
{
%
\escapechar
= `
\\
% use backslash in output files.
\def\@
{
@
}
% change to @@ when we switch to @ as escape char in index files.
\def\
{
\realbackslash\space
}
%
%
% Need these in case \tex is in effect and \{ is a \delimiter again.
% But can't use \lbracecmd and \rbracecmd because texindex assumes
% braces and backslashes are used only as delimiters.
\let\{
=
\mylbrace
\let\}
=
\myrbrace
%
% I don't entirely understand this, but when an index entry is
% generated from a macro call, the \endinput which \scanmacro inserts
% causes processing to be prematurely terminated. This is,
% apparently, because \indexsorttmp is fully expanded, and \endinput
% is an expandable command. The redefinition below makes \endinput
% disappear altogether for that purpose -- although logging shows that
% processing continues to some further point. On the other hand, it
% seems \endinput does not hurt in the printed index arg, since that
% is still getting written without apparent harm.
%
% Sample source (mac-idx3.tex, reported by Graham Percival to
% help-texinfo, 22may06):
% @macro funindex {WORD}
% @findex xyz
% @end macro
% ...
% @funindex commtest
%
% The above is not enough to reproduce the bug, but it gives the flavor.
%
% Sample whatsit resulting:
% .@write3{\entry{xyz}{@folio }{@code {xyz@endinput }}}
%
% So:
\let\endinput
=
\empty
%
% Do the redefinitions.
\commondummies
}
% For the aux and toc files, @ is the escape character. So we want to
% redefine everything using @ as the escape character (instead of
% \realbackslash, still used for index files). When everything uses @,
% this will be simpler.
%
\def\atdummies
{
%
\def\@
{
@@
}
%
\def\
{
@
}
%
\let\{
=
\lbraceatcmd
\let\}
=
\rbraceatcmd
%
% Do the redefinitions.
\commondummies
\otherbackslash
}
% Called from \indexdummies and \atdummies.
%
\def\commondummies
{
%
%
% \definedummyword defines \#1 as \string\#1\space, thus effectively
% preventing its expansion. This is used only for control% words,
% not control letters, because the \space would be incorrect for
% control characters, but is needed to separate the control word
% from whatever follows.
%
% For control letters, we have \definedummyletter, which omits the
% space.
%
% These can be used both for control words that take an argument and
% those that do not. If it is followed by {arg} in the input, then
% that will dutifully get written to the index (or wherever).
%
\def\definedummyword
##1
{
\def
##1
{
\string
##1
\space
}}
%
\def\definedummyletter
##1
{
\def
##1
{
\string
##1
}}
%
\let\definedummyaccent\definedummyletter
%
\commondummiesnofonts
%
\definedummyletter\_
%
%
% Non-English letters.
\definedummyword\AA
\definedummyword\AE
\definedummyword\L
\definedummyword\OE
\definedummyword\O
\definedummyword\aa
\definedummyword\ae
\definedummyword\l
\definedummyword\oe
\definedummyword\o
\definedummyword\ss
\definedummyword\exclamdown
\definedummyword\questiondown
\definedummyword\ordf
\definedummyword\ordm
%
% Although these internal commands shouldn't show up, sometimes they do.
\definedummyword\bf
\definedummyword\gtr
\definedummyword\hat
\definedummyword\less
\definedummyword\sf
\definedummyword\sl
\definedummyword\tclose
\definedummyword\tt
%
\definedummyword\LaTeX
\definedummyword\TeX
%
% Assorted special characters.
\definedummyword\bullet
\definedummyword\comma
\definedummyword\copyright
\definedummyword\registeredsymbol
\definedummyword\dots
\definedummyword\enddots
\definedummyword\equiv
\definedummyword\error
\definedummyword\euro
\definedummyword\expansion
\definedummyword\minus
\definedummyword\pounds
\definedummyword\point
\definedummyword\print
\definedummyword\result
\definedummyword\textdegree
%
% We want to disable all macros so that they are not expanded by \write.
\macrolist
%
\normalturnoffactive
%
% Handle some cases of @value -- where it does not contain any
% (non-fully-expandable) commands.
\makevalueexpandable
}
% \commondummiesnofonts: common to \commondummies and \indexnofonts.
%
\def\commondummiesnofonts
{
%
% Control letters and accents.
\definedummyletter\!
%
\definedummyaccent\"
%
\definedummyaccent\'
%
\definedummyletter\*
%
\definedummyaccent\,
%
\definedummyletter\.
%
\definedummyletter\/
%
\definedummyletter\:
%
\definedummyaccent\=
%
\definedummyletter\?
%
\definedummyaccent\^
%
\definedummyaccent\`
%
\definedummyaccent\~
%
\definedummyword\u
\definedummyword\v
\definedummyword\H
\definedummyword\dotaccent
\definedummyword\ringaccent
\definedummyword\tieaccent
\definedummyword\ubaraccent
\definedummyword\udotaccent
\definedummyword\dotless
%
% Texinfo font commands.
\definedummyword\b
\definedummyword\i
\definedummyword\r
\definedummyword\sc
\definedummyword\t
%
% Commands that take arguments.
\definedummyword\acronym
\definedummyword\cite
\definedummyword\code
\definedummyword\command
\definedummyword\dfn
\definedummyword\emph
\definedummyword\env
\definedummyword\file
\definedummyword\kbd
\definedummyword\key
\definedummyword\math
\definedummyword\option
\definedummyword\pxref
\definedummyword\ref
\definedummyword\samp
\definedummyword\strong
\definedummyword\tie
\definedummyword\uref
\definedummyword\url
\definedummyword\var
\definedummyword\verb
\definedummyword\w
\definedummyword\xref
}
% \indexnofonts is used when outputting the strings to sort the index
% by, and when constructing control sequence names. It eliminates all
% control sequences and just writes whatever the best ASCII sort string
% would be for a given command (usually its argument).
%
\def\indexnofonts
{
%
% Accent commands should become @asis.
\def\definedummyaccent
##1
{
\let
##1
\asis
}
%
% We can just ignore other control letters.
\def\definedummyletter
##1
{
\let
##1
\empty
}
%
% Hopefully, all control words can become @asis.
\let\definedummyword\definedummyaccent
%
\commondummiesnofonts
%
% Don't no-op \tt, since it isn't a user-level command
% and is used in the definitions of the active chars like <, >, |, etc.
% Likewise with the other plain tex font commands.
%\let\tt=\asis
%
\def\
{
}
%
\def\@
{
@
}
%
% how to handle braces?
\def\_
{
\normalunderscore
}
%
%
% Non-English letters.
\def\AA
{
AA
}
%
\def\AE
{
AE
}
%
\def\L
{
L
}
%
\def\OE
{
OE
}
%
\def\O
{
O
}
%
\def\aa
{
aa
}
%
\def\ae
{
ae
}
%
\def\l
{
l
}
%
\def\oe
{
oe
}
%
\def\o
{
o
}
%
\def\ss
{
ss
}
%
\def\exclamdown
{
!
}
%
\def\questiondown
{
?
}
%
\def\ordf
{
a
}
%
\def\ordm
{
o
}
%
%
\def\LaTeX
{
LaTeX
}
%
\def\TeX
{
TeX
}
%
%
% Assorted special characters.
% (The following {} will end up in the sort string, but that's ok.)
\def\bullet
{
bullet
}
%
\def\comma
{
,
}
%
\def\copyright
{
copyright
}
%
\def\registeredsymbol
{
R
}
%
\def\dots
{
...
}
%
\def\enddots
{
...
}
%
\def\equiv
{
==
}
%
\def\error
{
error
}
%
\def\euro
{
euro
}
%
\def\expansion
{
==>
}
%
\def\minus
{
-
}
%
\def\pounds
{
pounds
}
%
\def\point
{
.
}
%
\def\print
{
-|
}
%
\def\result
{
=>
}
%
\def\textdegree
{
degrees
}
%
%
% We need to get rid of all macros, leaving only the arguments (if present).
% Of course this is not nearly correct, but it is the best we can do for now.
% makeinfo does not expand macros in the argument to @deffn, which ends up
% writing an index entry, and texindex isn't prepared for an index sort entry
% that starts with \.
%
% Since macro invocations are followed by braces, we can just redefine them
% to take a single TeX argument. The case of a macro invocation that
% goes to end-of-line is not handled.
%
\macrolist
}
\let\indexbackslash
=0
%overridden during \printindex.
\let\SETmarginindex
=
\relax
% put index entries in margin (undocumented)?
% Most index entries go through here, but \dosubind is the general case.
% #1 is the index name, #2 is the entry text.
\def\doind
#1#2
{
\dosubind
{
#1
}{
#2
}{}}
% Workhorse for all \fooindexes.
% #1 is name of index, #2 is stuff to put there, #3 is subentry --
% empty if called from \doind, as we usually are (the main exception
% is with most defuns, which call us directly).
%
\def\dosubind
#1#2#3
{
%
\iflinks
{
%
% Store the main index entry text (including the third arg).
\toks
0 =
{
#2
}
%
% If third arg is present, precede it with a space.
\def\thirdarg
{
#3
}
%
\ifx\thirdarg\empty
\else
\toks
0 =
\expandafter
{
\the\toks
0
\space
#3
}
%
\fi
%
\edef\writeto
{
\csname
#1indfile
\endcsname
}
%
%
\ifvmode
\dosubindsanitize
\else
\dosubindwrite
\fi
}
%
\fi
}
% Write the entry in \toks0 to the index file:
%
\def\dosubindwrite
{
%
% Put the index entry in the margin if desired.
\ifx\SETmarginindex\relax\else
\insert\margin
{
\hbox
{
\vrule
height8pt depth3pt width0pt
\the\toks
0
}}
%
\fi
%
% Remember, we are within a group.
\indexdummies
% Must do this here, since \bf, etc expand at this stage
\def\backslashcurfont
{
\indexbackslash
}
% \indexbackslash isn't defined now
% so it will be output as is; and it will print as backslash.
%
% Process the index entry with all font commands turned off, to
% get the string to sort by.
{
\indexnofonts
\edef\temp
{
\the\toks
0
}
% need full expansion
\xdef\indexsorttmp
{
\temp
}
%
}
%
%
% Set up the complete index entry, with both the sort key and
% the original text, including any font commands. We write
% three arguments to \entry to the .?? file (four in the
% subentry case), texindex reduces to two when writing the .??s
% sorted result.
\edef\temp
{
%
\write\writeto
{
%
\string\entry
{
\indexsorttmp
}{
\noexpand\folio
}{
\the\toks
0
}}
%
}
%
\temp
}
% Take care of unwanted page breaks:
%
% If a skip is the last thing on the list now, preserve it
% by backing up by \lastskip, doing the \write, then inserting
% the skip again. Otherwise, the whatsit generated by the
% \write will make \lastskip zero. The result is that sequences
% like this:
% @end defun
% @tindex whatever
% @defun ...
% will have extra space inserted, because the \medbreak in the
% start of the @defun won't see the skip inserted by the @end of
% the previous defun.
%
% But don't do any of this if we're not in vertical mode. We
% don't want to do a \vskip and prematurely end a paragraph.
%
% Avoid page breaks due to these extra skips, too.
%
% But wait, there is a catch there:
% We'll have to check whether \lastskip is zero skip. \ifdim is not
% sufficient for this purpose, as it ignores stretch and shrink parts
% of the skip. The only way seems to be to check the textual
% representation of the skip.
%
% The following is almost like \def\zeroskipmacro{0.0pt} except that
% the ``p'' and ``t'' characters have catcode \other, not 11 (letter).
%
\edef\zeroskipmacro
{
\expandafter\the\csname
z@skip
\endcsname
}
%
% ..., ready, GO:
%
\def\dosubindsanitize
{
%
% \lastskip and \lastpenalty cannot both be nonzero simultaneously.
\skip
0 =
\lastskip
\edef\lastskipmacro
{
\the\lastskip
}
%
\count
255 =
\lastpenalty
%
% If \lastskip is nonzero, that means the last item was a
% skip. And since a skip is discardable, that means this
% -\skip0 glue we're inserting is preceded by a
% non-discardable item, therefore it is not a potential
% breakpoint, therefore no \nobreak needed.
\ifx\lastskipmacro\zeroskipmacro
\else
\vskip
-
\skip
0
\fi
%
\dosubindwrite
%
\ifx\lastskipmacro\zeroskipmacro
% If \lastskip was zero, perhaps the last item was a penalty, and
% perhaps it was >=10000, e.g., a \nobreak. In that case, we want
% to re-insert the same penalty (values >10000 are used for various
% signals); since we just inserted a non-discardable item, any
% following glue (such as a \parskip) would be a breakpoint. For example:
%
% @deffn deffn-whatever
% @vindex index-whatever
% Description.
% would allow a break between the index-whatever whatsit
% and the "Description." paragraph.
\ifnum\count
255>9999
\penalty\count
255
\fi
\else
% On the other hand, if we had a nonzero \lastskip,
% this make-up glue would be preceded by a non-discardable item
% (the whatsit from the \write), so we must insert a \nobreak.
\nobreak\vskip\skip
0
\fi
}
% The index entry written in the file actually looks like
% \entry {sortstring}{page}{topic}
% or
% \entry {sortstring}{page}{topic}{subtopic}
% The texindex program reads in these files and writes files
% containing these kinds of lines:
% \initial {c}
% before the first topic whose initial is c
% \entry {topic}{pagelist}
% for a topic that is used without subtopics
% \primary {topic}
% for the beginning of a topic that is used with subtopics
% \secondary {subtopic}{pagelist}
% for each subtopic.
% Define the user-accessible indexing commands
% @findex, @vindex, @kindex, @cindex.
\def\findex
{
\fnindex
}
\def\kindex
{
\kyindex
}
\def\cindex
{
\cpindex
}
\def\vindex
{
\vrindex
}
\def\tindex
{
\tpindex
}
\def\pindex
{
\pgindex
}
\def\cindexsub
{
\begingroup\obeylines\cindexsub
}
{
\obeylines
%
\gdef\cindexsub
"#1" #2
^^
M
{
\endgroup
%
\dosubind
{
cp
}{
#2
}{
#1
}}}
% Define the macros used in formatting output of the sorted index material.
% @printindex causes a particular index (the ??s file) to get printed.
% It does not print any chapter heading (usually an @unnumbered).
%
\parseargdef\printindex
{
\begingroup
\dobreak
\chapheadingskip
{
10000
}
%
%
\smallfonts
\rm
\tolerance
= 9500
\everypar
=
{}
% don't want the \kern\-parindent from indentation suppression.
%
% See if the index file exists and is nonempty.
% Change catcode of @ here so that if the index file contains
% \initial {@}
% as its first line, TeX doesn't complain about mismatched braces
% (because it thinks @} is a control sequence).
\catcode
`
\@
= 11
\openin
1
\jobname
.#1s
\ifeof
1
% \enddoublecolumns gets confused if there is no text in the index,
% and it loses the chapter title and the aux file entries for the
% index. The easiest way to prevent this problem is to make sure
% there is some text.
\putwordIndexNonexistent
\else
%
% If the index file exists but is empty, then \openin leaves \ifeof
% false. We have to make TeX try to read something from the file, so
% it can discover if there is anything in it.
\read
1 to
\temp
\ifeof
1
\putwordIndexIsEmpty
\else
% Index files are almost Texinfo source, but we use \ as the escape
% character. It would be better to use @, but that's too big a change
% to make right now.
\def\indexbackslash
{
\backslashcurfont
}
%
\catcode
`
\\
= 0
\escapechar
= `
\\
\begindoublecolumns
\input
\jobname
.#1s
\enddoublecolumns
\fi
\fi
\closein
1
\endgroup
}
% These macros are used by the sorted index file itself.
% Change them to control the appearance of the index.
\def\initial
#1
{{
%
% Some minor font changes for the special characters.
\let\tentt
=
\sectt
\let\tt
=
\sectt
\let\sf
=
\sectt
%
% Remove any glue we may have, we'll be inserting our own.
\removelastskip
%
% We like breaks before the index initials, so insert a bonus.
\nobreak
\vskip
0pt plus 3
\baselineskip
\penalty
0
\vskip
0pt plus -3
\baselineskip
%
% Typeset the initial. Making this add up to a whole number of
% baselineskips increases the chance of the dots lining up from column
% to column. It still won't often be perfect, because of the stretch
% we need before each entry, but it's better.
%
% No shrink because it confuses \balancecolumns.
\vskip
1.67
\baselineskip
plus .5
\baselineskip
\leftline
{
\secbf
#1
}
%
% Do our best not to break after the initial.
\nobreak
\vskip
.33
\baselineskip
plus .1
\baselineskip
}}
% \entry typesets a paragraph consisting of the text (#1), dot leaders, and
% then page number (#2) flushed to the right margin. It is used for index
% and table of contents entries. The paragraph is indented by \leftskip.
%
% A straightforward implementation would start like this:
% \def\entry#1#2{...
% But this frozes the catcodes in the argument, and can cause problems to
% @code, which sets - active. This problem was fixed by a kludge---
% ``-'' was active throughout whole index, but this isn't really right.
%
% The right solution is to prevent \entry from swallowing the whole text.
% --kasal, 21nov03
\def\entry
{
%
\begingroup
%
% Start a new paragraph if necessary, so our assignments below can't
% affect previous text.
\par
%
% Do not fill out the last line with white space.
\parfillskip
= 0in
%
% No extra space above this paragraph.
\parskip
= 0in
%
% Do not prefer a separate line ending with a hyphen to fewer lines.
\finalhyphendemerits
= 0
%
% \hangindent is only relevant when the entry text and page number
% don't both fit on one line. In that case, bob suggests starting the
% dots pretty far over on the line. Unfortunately, a large
% indentation looks wrong when the entry text itself is broken across
% lines. So we use a small indentation and put up with long leaders.
%
% \hangafter is reset to 1 (which is the value we want) at the start
% of each paragraph, so we need not do anything with that.
\hangindent
= 2em
%
% When the entry text needs to be broken, just fill out the first line
% with blank space.
\rightskip
= 0pt plus1fil
%
% A bit of stretch before each entry for the benefit of balancing
% columns.
\vskip
0pt plus1pt
%
% Swallow the left brace of the text (first parameter):
\afterassignment\doentry
\let\temp
=
}
\def\doentry
{
%
\bgroup
% Instead of the swallowed brace.
\noindent
\aftergroup\finishentry
% And now comes the text of the entry.
}
\def\finishentry
#1
{
%
% #1 is the page number.
%
% The following is kludged to not output a line of dots in the index if
% there are no page numbers. The next person who breaks this will be
% cursed by a Unix daemon.
\def\tempa
{{
\rm
}}
%
\def\tempb
{
#1
}
%
\edef\tempc
{
\tempa
}
%
\edef\tempd
{
\tempb
}
%
\ifx\tempc\tempd
\
%
\else
%
% If we must, put the page number on a line of its own, and fill out
% this line with blank space. (The \hfil is overwhelmed with the
% fill leaders glue in \indexdotfill if the page number does fit.)
\hfil\penalty
50
\null\nobreak\indexdotfill
% Have leaders before the page number.
%
% The `\ ' here is removed by the implicit \unskip that TeX does as
% part of (the primitive) \par. Without it, a spurious underfull
% \hbox ensues.
\ifpdf
\pdfgettoks
#1.
%
\ \the\toksA
\else
\
#1
%
\fi
\fi
\par
\endgroup
}
% Like plain.tex's \dotfill, except uses up at least 1 em.
\def\indexdotfill
{
\cleaders
\hbox
{
$
\mathsurround
=
0
pt
\mkern
1
.
5
mu.
\mkern
1
.
5
mu
$
}
\hskip
1em plus 1fill
}
\def\primary
#1
{
\line
{
#1
\hfil
}}
\newskip\secondaryindent
\secondaryindent
=0.5cm
\def\secondary
#1#2
{{
%
\parfillskip
=0in
\parskip
=0in
\hangindent
=1in
\hangafter
=1
\noindent\hskip\secondaryindent\hbox
{
#1
}
\indexdotfill
\ifpdf
\pdfgettoks
#2.
\ \the\toksA
% The page number ends the paragraph.
\else
#2
\fi
\par
}}
% Define two-column mode, which we use to typeset indexes.
% Adapted from the TeXbook, page 416, which is to say,
% the manmac.tex format used to print the TeXbook itself.
\catcode
`
\@
=11
\newbox\partialpage
\newdimen\doublecolumnhsize
\def\begindoublecolumns
{
\begingroup
% ended by \enddoublecolumns
% Grab any single-column material above us.
\output
=
{
%
%
% Here is a possibility not foreseen in manmac: if we accumulate a
% whole lot of material, we might end up calling this \output
% routine twice in a row (see the doublecol-lose test, which is
% essentially a couple of indexes with @setchapternewpage off). In
% that case we just ship out what is in \partialpage with the normal
% output routine. Generally, \partialpage will be empty when this
% runs and this will be a no-op. See the indexspread.tex test case.
\ifvoid\partialpage
\else
\onepageout
{
\pagecontents\partialpage
}
%
\fi
%
\global\setbox\partialpage
=
\vbox
{
%
% Unvbox the main output page.
\unvbox\PAGE
\kern
-
\topskip
\kern\baselineskip
}
%
}
%
\eject
% run that output routine to set \partialpage
%
% Use the double-column output routine for subsequent pages.
\output
=
{
\doublecolumnout
}
%
%
% Change the page size parameters. We could do this once outside this
% routine, in each of @smallbook, @afourpaper, and the default 8.5x11
% format, but then we repeat the same computation. Repeating a couple
% of assignments once per index is clearly meaningless for the
% execution time, so we may as well do it in one place.
%
% First we halve the line length, less a little for the gutter between
% the columns. We compute the gutter based on the line length, so it
% changes automatically with the paper format. The magic constant
% below is chosen so that the gutter has the same value (well, +-<1pt)
% as it did when we hard-coded it.
%
% We put the result in a separate register, \doublecolumhsize, so we
% can restore it in \pagesofar, after \hsize itself has (potentially)
% been clobbered.
%
\doublecolumnhsize
=
\hsize
\advance\doublecolumnhsize
by -.04154
\hsize
\divide\doublecolumnhsize
by 2
\hsize
=
\doublecolumnhsize
%
% Double the \vsize as well. (We don't need a separate register here,
% since nobody clobbers \vsize.)
\vsize
= 2
\vsize
}
% The double-column output routine for all double-column pages except
% the last.
%
\def\doublecolumnout
{
%
\splittopskip
=
\topskip
\splitmaxdepth
=
\maxdepth
% Get the available space for the double columns -- the normal
% (undoubled) page height minus any material left over from the
% previous page.
\dimen
@ =
\vsize
\divide\dimen
@ by 2
\advance\dimen
@ by -
\ht\partialpage
%
% box0 will be the left-hand column, box2 the right.
\setbox
0=
\vsplit
255 to
\dimen
@
\setbox
2=
\vsplit
255 to
\dimen
@
\onepageout\pagesofar
\unvbox
255
\penalty\outputpenalty
}
%
% Re-output the contents of the output page -- any previous material,
% followed by the two boxes we just split, in box0 and box2.
\def\pagesofar
{
%
\unvbox\partialpage
%
\hsize
=
\doublecolumnhsize
\wd
0=
\hsize
\wd
2=
\hsize
\hbox
to
\pagewidth
{
\box
0
\hfil\box
2
}
%
}
%
% All done with double columns.
\def\enddoublecolumns
{
%
\output
=
{
%
% Split the last of the double-column material. Leave it on the
% current page, no automatic page break.
\balancecolumns
%
% If we end up splitting too much material for the current page,
% though, there will be another page break right after this \output
% invocation ends. Having called \balancecolumns once, we do not
% want to call it again. Therefore, reset \output to its normal
% definition right away. (We hope \balancecolumns will never be
% called on to balance too much material, but if it is, this makes
% the output somewhat more palatable.)
\global\output
=
{
\onepageout
{
\pagecontents\PAGE
}}
%
}
%
\eject
\endgroup
% started in \begindoublecolumns
%
% \pagegoal was set to the doubled \vsize above, since we restarted
% the current page. We're now back to normal single-column
% typesetting, so reset \pagegoal to the normal \vsize (after the
% \endgroup where \vsize got restored).
\pagegoal
=
\vsize
}
%
% Called at the end of the double column material.
\def\balancecolumns
{
%
\setbox
0 =
\vbox
{
\unvbox
255
}
% like \box255 but more efficient, see p.120.
\dimen
@ =
\ht
0
\advance\dimen
@ by
\topskip
\advance\dimen
@ by-
\baselineskip
\divide\dimen
@ by 2
% target to split to
%debug\message{final 2-column material height=\the\ht0, target=\the\dimen@.}%
\splittopskip
=
\topskip
% Loop until we get a decent breakpoint.
{
%
\vbadness
= 10000
\loop
\global\setbox
3 =
\copy
0
\global\setbox
1 =
\vsplit
3 to
\dimen
@
\ifdim\ht
3>
\dimen
@
\global\advance\dimen
@ by 1pt
\repeat
}
%
%debug\message{split to \the\dimen@, column heights: \the\ht1, \the\ht3.}%
\setbox
0=
\vbox
to
\dimen
@
{
\unvbox
1
}
%
\setbox
2=
\vbox
to
\dimen
@
{
\unvbox
3
}
%
%
\pagesofar
}
\catcode
`
\@
=
\other
\message
{
sectioning,
}
% Chapters, sections, etc.
% \unnumberedno is an oxymoron, of course. But we count the unnumbered
% sections so that we can refer to them unambiguously in the pdf
% outlines by their "section number". We avoid collisions with chapter
% numbers by starting them at 10000. (If a document ever has 10000
% chapters, we're in trouble anyway, I'm sure.)
\newcount\unnumberedno
\unnumberedno
= 10000
\newcount\chapno
\newcount\secno
\secno
=0
\newcount\subsecno
\subsecno
=0
\newcount\subsubsecno
\subsubsecno
=0
% This counter is funny since it counts through charcodes of letters A, B, ...
\newcount\appendixno
\appendixno
= `
\@
%
% \def\appendixletter{\char\the\appendixno}
% We do the following ugly conditional instead of the above simple
% construct for the sake of pdftex, which needs the actual
% letter in the expansion, not just typeset.
%
\def\appendixletter
{
%
\ifnum\appendixno
=`A A
%
\else\ifnum\appendixno
=`B B
%
\else\ifnum\appendixno
=`C C
%
\else\ifnum\appendixno
=`D D
%
\else\ifnum\appendixno
=`E E
%
\else\ifnum\appendixno
=`F F
%
\else\ifnum\appendixno
=`G G
%
\else\ifnum\appendixno
=`H H
%
\else\ifnum\appendixno
=`I I
%
\else\ifnum\appendixno
=`J J
%
\else\ifnum\appendixno
=`K K
%
\else\ifnum\appendixno
=`L L
%
\else\ifnum\appendixno
=`M M
%
\else\ifnum\appendixno
=`N N
%
\else\ifnum\appendixno
=`O O
%
\else\ifnum\appendixno
=`P P
%
\else\ifnum\appendixno
=`Q Q
%
\else\ifnum\appendixno
=`R R
%
\else\ifnum\appendixno
=`S S
%
\else\ifnum\appendixno
=`T T
%
\else\ifnum\appendixno
=`U U
%
\else\ifnum\appendixno
=`V V
%
\else\ifnum\appendixno
=`W W
%
\else\ifnum\appendixno
=`X X
%
\else\ifnum\appendixno
=`Y Y
%
\else\ifnum\appendixno
=`Z Z
%
% The \the is necessary, despite appearances, because \appendixletter is
% expanded while writing the .toc file. \char\appendixno is not
% expandable, thus it is written literally, thus all appendixes come out
% with the same letter (or @) in the toc without it.
\else\char\the\appendixno
\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
}
% Each @chapter defines this as the name of the chapter.
% page headings and footings can use it. @section does likewise.
% However, they are not reliable, because we don't use marks.
\def\thischapter
{}
\def\thissection
{}
\newcount\absseclevel
% used to calculate proper heading level
\newcount\secbase\secbase
=0
% @raisesections/@lowersections modify this count
% @raisesections: treat @section as chapter, @subsection as section, etc.
\def\raisesections
{
\global\advance\secbase
by -1
}
\let\up
=
\raisesections
% original BFox name
% @lowersections: treat @chapter as section, @section as subsection, etc.
\def\lowersections
{
\global\advance\secbase
by 1
}
\let\down
=
\lowersections
% original BFox name
% we only have subsub.
\chardef\maxseclevel
= 3
%
% A numbered section within an unnumbered changes to unnumbered too.
% To achive this, remember the "biggest" unnum. sec. we are currently in:
\chardef\unmlevel
=
\maxseclevel
%
% Trace whether the current chapter is an appendix or not:
% \chapheadtype is "N" or "A", unnumbered chapters are ignored.
\def\chapheadtype
{
N
}
% Choose a heading macro
% #1 is heading type
% #2 is heading level
% #3 is text for heading
\def\genhead
#1#2#3
{
%
% Compute the abs. sec. level:
\absseclevel
=#2
\advance\absseclevel
by
\secbase
% Make sure \absseclevel doesn't fall outside the range:
\ifnum
\absseclevel
< 0
\absseclevel
= 0
\else
\ifnum
\absseclevel
> 3
\absseclevel
= 3
\fi
\fi
% The heading type:
\def\headtype
{
#1
}
%
\if
\headtype
U
%
\ifnum
\absseclevel
<
\unmlevel
\chardef\unmlevel
=
\absseclevel
\fi
\else
% Check for appendix sections:
\ifnum
\absseclevel
= 0
\edef\chapheadtype
{
\headtype
}
%
\else
\if
\headtype
A
\if
\chapheadtype
N
%
\errmessage
{
@appendix... within a non-appendix chapter
}
%
\fi\fi
\fi
% Check for numbered within unnumbered:
\ifnum
\absseclevel
>
\unmlevel
\def\headtype
{
U
}
%
\else
\chardef\unmlevel
= 3
\fi
\fi
% Now print the heading:
\if
\headtype
U
%
\ifcase\absseclevel
\unnumberedzzz
{
#3
}
%
\or
\unnumberedseczzz
{
#3
}
%
\or
\unnumberedsubseczzz
{
#3
}
%
\or
\unnumberedsubsubseczzz
{
#3
}
%
\fi
\else
\if
\headtype
A
%
\ifcase\absseclevel
\appendixzzz
{
#3
}
%
\or
\appendixsectionzzz
{
#3
}
%
\or
\appendixsubseczzz
{
#3
}
%
\or
\appendixsubsubseczzz
{
#3
}
%
\fi
\else
\ifcase\absseclevel
\chapterzzz
{
#3
}
%
\or
\seczzz
{
#3
}
%
\or
\numberedsubseczzz
{
#3
}
%
\or
\numberedsubsubseczzz
{
#3
}
%
\fi
\fi
\fi
\suppressfirstparagraphindent
}
% an interface:
\def\numhead
{
\genhead
N
}
\def\apphead
{
\genhead
A
}
\def\unnmhead
{
\genhead
U
}
% @chapter, @appendix, @unnumbered. Increment top-level counter, reset
% all lower-level sectioning counters to zero.
%
% Also set \chaplevelprefix, which we prepend to @float sequence numbers
% (e.g., figures), q.v. By default (before any chapter), that is empty.
\let\chaplevelprefix
=
\empty
%
\outer\parseargdef\chapter
{
\numhead
0
{
#1
}}
% normally numhead0 calls chapterzzz
\def\chapterzzz
#1
{
%
% section resetting is \global in case the chapter is in a group, such
% as an @include file.
\global\secno
=0
\global\subsecno
=0
\global\subsubsecno
=0
\global\advance\chapno
by 1
%
% Used for \float.
\gdef\chaplevelprefix
{
\the\chapno
.
}
%
\resetallfloatnos
%
\message
{
\putwordChapter\space
\the\chapno
}
%
%
% Write the actual heading.
\chapmacro
{
#1
}{
Ynumbered
}{
\the\chapno
}
%
%
% So @section and the like are numbered underneath this chapter.
\global\let\section
=
\numberedsec
\global\let\subsection
=
\numberedsubsec
\global\let\subsubsection
=
\numberedsubsubsec
}
\outer\parseargdef\appendix
{
\apphead
0
{
#1
}}
% normally apphead0 calls appendixzzz
\def\appendixzzz
#1
{
%
\global\secno
=0
\global\subsecno
=0
\global\subsubsecno
=0
\global\advance\appendixno
by 1
\gdef\chaplevelprefix
{
\appendixletter
.
}
%
\resetallfloatnos
%
\def\appendixnum
{
\putwordAppendix\space
\appendixletter
}
%
\message
{
\appendixnum
}
%
%
\chapmacro
{
#1
}{
Yappendix
}{
\appendixletter
}
%
%
\global\let\section
=
\appendixsec
\global\let\subsection
=
\appendixsubsec
\global\let\subsubsection
=
\appendixsubsubsec
}
\outer\parseargdef\unnumbered
{
\unnmhead
0
{
#1
}}
% normally unnmhead0 calls unnumberedzzz
\def\unnumberedzzz
#1
{
%
\global\secno
=0
\global\subsecno
=0
\global\subsubsecno
=0
\global\advance\unnumberedno
by 1
%
% Since an unnumbered has no number, no prefix for figures.
\global\let\chaplevelprefix
=
\empty
\resetallfloatnos
%
% This used to be simply \message{#1}, but TeX fully expands the
% argument to \message. Therefore, if #1 contained @-commands, TeX
% expanded them. For example, in `@unnumbered The @cite{Book}', TeX
% expanded @cite (which turns out to cause errors because \cite is meant
% to be executed, not expanded).
%
% Anyway, we don't want the fully-expanded definition of @cite to appear
% as a result of the \message, we just want `@cite' itself. We use
% \the<toks register> to achieve this: TeX expands \the<toks> only once,
% simply yielding the contents of <toks register>. (We also do this for
% the toc entries.)
\toks
0 =
{
#1
}
%
\message
{
(
\the\toks
0)
}
%
%
\chapmacro
{
#1
}{
Ynothing
}{
\the\unnumberedno
}
%
%
\global\let\section
=
\unnumberedsec
\global\let\subsection
=
\unnumberedsubsec
\global\let\subsubsection
=
\unnumberedsubsubsec
}
% @centerchap is like @unnumbered, but the heading is centered.
\outer\parseargdef\centerchap
{
%
% Well, we could do the following in a group, but that would break
% an assumption that \chapmacro is called at the outermost level.
% Thus we are safer this way: --kasal, 24feb04
\let\centerparametersmaybe
=
\centerparameters
\unnmhead
0
{
#1
}
%
\let\centerparametersmaybe
=
\relax
}
% @top is like @unnumbered.
\let\top\unnumbered
% Sections.
\outer\parseargdef\numberedsec
{
\numhead
1
{
#1
}}
% normally calls seczzz
\def\seczzz
#1
{
%
\global\subsecno
=0
\global\subsubsecno
=0
\global\advance\secno
by 1
\sectionheading
{
#1
}{
sec
}{
Ynumbered
}{
\the\chapno
.
\the\secno
}
%
}
\outer\parseargdef\appendixsection
{
\apphead
1
{
#1
}}
% normally calls appendixsectionzzz
\def\appendixsectionzzz
#1
{
%
\global\subsecno
=0
\global\subsubsecno
=0
\global\advance\secno
by 1
\sectionheading
{
#1
}{
sec
}{
Yappendix
}{
\appendixletter
.
\the\secno
}
%
}
\let\appendixsec\appendixsection
\outer\parseargdef\unnumberedsec
{
\unnmhead
1
{
#1
}}
% normally calls unnumberedseczzz
\def\unnumberedseczzz
#1
{
%
\global\subsecno
=0
\global\subsubsecno
=0
\global\advance\secno
by 1
\sectionheading
{
#1
}{
sec
}{
Ynothing
}{
\the\unnumberedno
.
\the\secno
}
%
}
% Subsections.
\outer\parseargdef\numberedsubsec
{
\numhead
2
{
#1
}}
% normally calls numberedsubseczzz
\def\numberedsubseczzz
#1
{
%
\global\subsubsecno
=0
\global\advance\subsecno
by 1
\sectionheading
{
#1
}{
subsec
}{
Ynumbered
}{
\the\chapno
.
\the\secno
.
\the\subsecno
}
%
}
\outer\parseargdef\appendixsubsec
{
\apphead
2
{
#1
}}
% normally calls appendixsubseczzz
\def\appendixsubseczzz
#1
{
%
\global\subsubsecno
=0
\global\advance\subsecno
by 1
\sectionheading
{
#1
}{
subsec
}{
Yappendix
}
%
{
\appendixletter
.
\the\secno
.
\the\subsecno
}
%
}
\outer\parseargdef\unnumberedsubsec
{
\unnmhead
2
{
#1
}}
%normally calls unnumberedsubseczzz
\def\unnumberedsubseczzz
#1
{
%
\global\subsubsecno
=0
\global\advance\subsecno
by 1
\sectionheading
{
#1
}{
subsec
}{
Ynothing
}
%
{
\the\unnumberedno
.
\the\secno
.
\the\subsecno
}
%
}
% Subsubsections.
\outer\parseargdef\numberedsubsubsec
{
\numhead
3
{
#1
}}
% normally numberedsubsubseczzz
\def\numberedsubsubseczzz
#1
{
%
\global\advance\subsubsecno
by 1
\sectionheading
{
#1
}{
subsubsec
}{
Ynumbered
}
%
{
\the\chapno
.
\the\secno
.
\the\subsecno
.
\the\subsubsecno
}
%
}
\outer\parseargdef\appendixsubsubsec
{
\apphead
3
{
#1
}}
% normally appendixsubsubseczzz
\def\appendixsubsubseczzz
#1
{
%
\global\advance\subsubsecno
by 1
\sectionheading
{
#1
}{
subsubsec
}{
Yappendix
}
%
{
\appendixletter
.
\the\secno
.
\the\subsecno
.
\the\subsubsecno
}
%
}
\outer\parseargdef\unnumberedsubsubsec
{
\unnmhead
3
{
#1
}}
%normally unnumberedsubsubseczzz
\def\unnumberedsubsubseczzz
#1
{
%
\global\advance\subsubsecno
by 1
\sectionheading
{
#1
}{
subsubsec
}{
Ynothing
}
%
{
\the\unnumberedno
.
\the\secno
.
\the\subsecno
.
\the\subsubsecno
}
%
}
% These macros control what the section commands do, according
% to what kind of chapter we are in (ordinary, appendix, or unnumbered).
% Define them by default for a numbered chapter.
\let\section
=
\numberedsec
\let\subsection
=
\numberedsubsec
\let\subsubsection
=
\numberedsubsubsec
% Define @majorheading, @heading and @subheading
% NOTE on use of \vbox for chapter headings, section headings, and such:
% 1) We use \vbox rather than the earlier \line to permit
% overlong headings to fold.
% 2) \hyphenpenalty is set to 10000 because hyphenation in a
% heading is obnoxious; this forbids it.
% 3) Likewise, headings look best if no \parindent is used, and
% if justification is not attempted. Hence \raggedright.
\def\majorheading
{
%
{
\advance\chapheadingskip
by 10pt
\chapbreak
}
%
\parsearg\chapheadingzzz
}
\def\chapheading
{
\chapbreak
\parsearg\chapheadingzzz
}
\def\chapheadingzzz
#1
{
%
{
\chapfonts
\vbox
{
\hyphenpenalty
=10000
\tolerance
=5000
\parindent
=0pt
\raggedright
\rm
#1
\hfill
}}
%
\bigskip
\par\penalty
200
\relax
\suppressfirstparagraphindent
}
% @heading, @subheading, @subsubheading.
\parseargdef\heading
{
\sectionheading
{
#1
}{
sec
}{
Yomitfromtoc
}{}
\suppressfirstparagraphindent
}
\parseargdef\subheading
{
\sectionheading
{
#1
}{
subsec
}{
Yomitfromtoc
}{}
\suppressfirstparagraphindent
}
\parseargdef\subsubheading
{
\sectionheading
{
#1
}{
subsubsec
}{
Yomitfromtoc
}{}
\suppressfirstparagraphindent
}
% These macros generate a chapter, section, etc. heading only
% (including whitespace, linebreaking, etc. around it),
% given all the information in convenient, parsed form.
%%% Args are the skip and penalty (usually negative)
\def\dobreak
#1#2
{
\par\ifdim\lastskip
<#1
\removelastskip\penalty
#2
\vskip
#1
\fi
}
%%% Define plain chapter starts, and page on/off switching for it
% Parameter controlling skip before chapter headings (if needed)
\newskip\chapheadingskip
\def\chapbreak
{
\dobreak
\chapheadingskip
{
-4000
}}
\def\chappager
{
\par\vfill\supereject
}
\def\chapoddpage
{
\chappager
\ifodd\pageno
\else
\hbox
to 0pt
{}
\chappager\fi
}
\def\setchapternewpage
#1
{
\csname
CHAPPAG#1
\endcsname
}
\def\CHAPPAGoff
{
%
\global\let\contentsalignmacro
=
\chappager
\global\let\pchapsepmacro
=
\chapbreak
\global\let\pagealignmacro
=
\chappager
}
\def\CHAPPAGon
{
%
\global\let\contentsalignmacro
=
\chappager
\global\let\pchapsepmacro
=
\chappager
\global\let\pagealignmacro
=
\chappager
\global\def\HEADINGSon
{
\HEADINGSsingle
}}
\def\CHAPPAGodd
{
%
\global\let\contentsalignmacro
=
\chapoddpage
\global\let\pchapsepmacro
=
\chapoddpage
\global\let\pagealignmacro
=
\chapoddpage
\global\def\HEADINGSon
{
\HEADINGSdouble
}}
\CHAPPAGon
% Chapter opening.
%
% #1 is the text, #2 is the section type (Ynumbered, Ynothing,
% Yappendix, Yomitfromtoc), #3 the chapter number.
%
% To test against our argument.
\def\Ynothingkeyword
{
Ynothing
}
\def\Yomitfromtockeyword
{
Yomitfromtoc
}
\def\Yappendixkeyword
{
Yappendix
}
%
\def\chapmacro
#1#2#3
{
%
\pchapsepmacro
{
%
\chapfonts
\rm
%
% Have to define \thissection before calling \donoderef, because the
% xref code eventually uses it. On the other hand, it has to be called
% after \pchapsepmacro, or the headline will change too soon.
\gdef\thissection
{
#1
}
%
\gdef\thischaptername
{
#1
}
%
%
% Only insert the separating space if we have a chapter/appendix
% number, and don't print the unnumbered ``number''.
\def\temptype
{
#2
}
%
\ifx\temptype\Ynothingkeyword
\setbox
0 =
\hbox
{}
%
\def\toctype
{
unnchap
}
%
\gdef\thischapternum
{}
%
\gdef\thischapter
{
#1
}
%
\else\ifx\temptype\Yomitfromtockeyword
\setbox
0 =
\hbox
{}
% contents like unnumbered, but no toc entry
\def\toctype
{
omit
}
%
\gdef\thischapternum
{}
%
\gdef\thischapter
{}
%
\else\ifx\temptype\Yappendixkeyword
\setbox
0 =
\hbox
{
\putwordAppendix
{}
#3
\enspace
}
%
\def\toctype
{
app
}
%
\xdef\thischapternum
{
\appendixletter
}
%
% We don't substitute the actual chapter name into \thischapter
% because we don't want its macros evaluated now. And we don't
% use \thissection because that changes with each section.
%
\xdef\thischapter
{
\putwordAppendix
{}
\appendixletter
:
\noexpand\thischaptername
}
%
\else
\setbox
0 =
\hbox
{
#3
\enspace
}
%
\def\toctype
{
numchap
}
%
\xdef\thischapternum
{
\the\chapno
}
%
\xdef\thischapter
{
\putwordChapter
{}
\the\chapno
:
\noexpand\thischaptername
}
%
\fi\fi\fi
%
% Write the toc entry for this chapter. Must come before the
% \donoderef, because we include the current node name in the toc
% entry, and \donoderef resets it to empty.
\writetocentry
{
\toctype
}{
#1
}{
#3
}
%
%
% For pdftex, we have to write out the node definition (aka, make
% the pdfdest) after any page break, but before the actual text has
% been typeset. If the destination for the pdf outline is after the
% text, then jumping from the outline may wind up with the text not
% being visible, for instance under high magnification.
\donoderef
{
#2
}
%
%
% Typeset the actual heading.
\vbox
{
\hyphenpenalty
=10000
\tolerance
=5000
\parindent
=0pt
\raggedright
\hangindent
=
\wd
0
\centerparametersmaybe
\unhbox
0 #1
\par
}
%
}
%
\nobreak\bigskip
% no page break after a chapter title
\nobreak
}
% @centerchap -- centered and unnumbered.
\let\centerparametersmaybe
=
\relax
\def\centerparameters
{
%
\advance\rightskip
by 3
\rightskip
\leftskip
=
\rightskip
\parfillskip
= 0pt
}
% I don't think this chapter style is supported any more, so I'm not
% updating it with the new noderef stuff. We'll see. --karl, 11aug03.
%
\def\setchapterstyle
#1
{
\csname
CHAPF#1
\endcsname
}
%
\def\unnchfopen
#1
{
%
\chapoddpage
{
\chapfonts
\vbox
{
\hyphenpenalty
=10000
\tolerance
=5000
\parindent
=0pt
\raggedright
\rm
#1
\hfill
}}
\bigskip
\par\nobreak
}
\def\chfopen
#1#2
{
\chapoddpage
{
\chapfonts
\vbox
to 3in
{
\vfil
\hbox
to
\hsize
{
\hfil
#2
}
\hbox
to
\hsize
{
\hfil
#1
}
\vfil
}}
%
\par\penalty
5000
%
}
\def\centerchfopen
#1
{
%
\chapoddpage
{
\chapfonts
\vbox
{
\hyphenpenalty
=10000
\tolerance
=5000
\parindent
=0pt
\hfill
{
\rm
#1
}
\hfill
}}
\bigskip
\par\nobreak
}
\def\CHAPFopen
{
%
\global\let\chapmacro
=
\chfopen
\global\let\centerchapmacro
=
\centerchfopen
}
% Section titles. These macros combine the section number parts and
% call the generic \sectionheading to do the printing.
%
\newskip\secheadingskip
\def\secheadingbreak
{
\dobreak
\secheadingskip
{
-1000
}}
% Subsection titles.
\newskip\subsecheadingskip
\def\subsecheadingbreak
{
\dobreak
\subsecheadingskip
{
-500
}}
% Subsubsection titles.
\def\subsubsecheadingskip
{
\subsecheadingskip
}
\def\subsubsecheadingbreak
{
\subsecheadingbreak
}
% Print any size, any type, section title.
%
% #1 is the text, #2 is the section level (sec/subsec/subsubsec), #3 is
% the section type for xrefs (Ynumbered, Ynothing, Yappendix), #4 is the
% section number.
%
\def\sectionheading
#1#2#3#4
{
%
{
%
% Switch to the right set of fonts.
\csname
#2fonts
\endcsname
\rm
%
% Insert space above the heading.
\csname
#2headingbreak
\endcsname
%
% Only insert the space after the number if we have a section number.
\def\sectionlevel
{
#2
}
%
\def\temptype
{
#3
}
%
%
\ifx\temptype\Ynothingkeyword
\setbox
0 =
\hbox
{}
%
\def\toctype
{
unn
}
%
\gdef\thissection
{
#1
}
%
\else\ifx\temptype\Yomitfromtockeyword
% for @headings -- no section number, don't include in toc,
% and don't redefine \thissection.
\setbox
0 =
\hbox
{}
%
\def\toctype
{
omit
}
%
\let\sectionlevel
=
\empty
\else\ifx\temptype\Yappendixkeyword
\setbox
0 =
\hbox
{
#4
\enspace
}
%
\def\toctype
{
app
}
%
\gdef\thissection
{
#1
}
%
\else
\setbox
0 =
\hbox
{
#4
\enspace
}
%
\def\toctype
{
num
}
%
\gdef\thissection
{
#1
}
%
\fi\fi\fi
%
% Write the toc entry (before \donoderef). See comments in \chapmacro.
\writetocentry
{
\toctype\sectionlevel
}{
#1
}{
#4
}
%
%
% Write the node reference (= pdf destination for pdftex).
% Again, see comments in \chapmacro.
\donoderef
{
#3
}
%
%
% Interline glue will be inserted when the vbox is completed.
% That glue will be a valid breakpoint for the page, since it'll be
% preceded by a whatsit (usually from the \donoderef, or from the
% \writetocentry if there was no node). We don't want to allow that
% break, since then the whatsits could end up on page n while the
% section is on page n+1, thus toc/etc. are wrong. Debian bug 276000.
\nobreak
%
% Output the actual section heading.
\vbox
{
\hyphenpenalty
=10000
\tolerance
=5000
\parindent
=0pt
\raggedright
\hangindent
=
\wd
0
% zero if no section number
\unhbox
0 #1
}
%
}
%
% Add extra space after the heading -- half of whatever came above it.
% Don't allow stretch, though.
\kern
.5
\csname
#2headingskip
\endcsname
%
% Do not let the kern be a potential breakpoint, as it would be if it
% was followed by glue.
\nobreak
%
% We'll almost certainly start a paragraph next, so don't let that
% glue accumulate. (Not a breakpoint because it's preceded by a
% discardable item.)
\vskip
-
\parskip
%
% This is purely so the last item on the list is a known \penalty >
% 10000. This is so \startdefun can avoid allowing breakpoints after
% section headings. Otherwise, it would insert a valid breakpoint between:
%
% @section sec-whatever
% @deffn def-whatever
\penalty
10001
}
\message
{
toc,
}
% Table of contents.
\newwrite\tocfile
% Write an entry to the toc file, opening it if necessary.
% Called from @chapter, etc.
%
% Example usage: \writetocentry{sec}{Section Name}{\the\chapno.\the\secno}
% We append the current node name (if any) and page number as additional
% arguments for the \{chap,sec,...}entry macros which will eventually
% read this. The node name is used in the pdf outlines as the
% destination to jump to.
%
% We open the .toc file for writing here instead of at @setfilename (or
% any other fixed time) so that @contents can be anywhere in the document.
% But if #1 is `omit', then we don't do anything. This is used for the
% table of contents chapter openings themselves.
%
\newif\iftocfileopened
\def\omitkeyword
{
omit
}
%
%
\def\writetocentry
#1#2#3
{
%
\edef\writetoctype
{
#1
}
%
\ifx\writetoctype\omitkeyword
\else
\iftocfileopened\else
\immediate\openout\tocfile
=
\jobname
.toc
\global\tocfileopenedtrue
\fi
%
\iflinks
{
\atdummies
\edef\temp
{
%
\write\tocfile
{
@#1entry
{
#2
}{
#3
}{
\lastnode
}{
\noexpand\folio
}}}
%
\temp
}
%
\fi
\fi
%
% Tell \shipout to create a pdf destination on each page, if we're
% writing pdf. These are used in the table of contents. We can't
% just write one on every page because the title pages are numbered
% 1 and 2 (the page numbers aren't printed), and so are the first
% two pages of the document. Thus, we'd have two destinations named
% `1', and two named `2'.
\ifpdf
\global\pdfmakepagedesttrue
\fi
}
% These characters do not print properly in the Computer Modern roman
% fonts, so we must take special care. This is more or less redundant
% with the Texinfo input format setup at the end of this file.
%
\def\activecatcodes
{
%
\catcode
`
\"
=
\active
\catcode
`
\$
=
\active
\catcode
`
\<
=
\active
\catcode
`
\>
=
\active
\catcode
`
\\
=
\active
\catcode
`
\^
=
\active
\catcode
`
\_
=
\active
\catcode
`
\|
=
\active
\catcode
`
\~
=
\active
}
% Read the toc file, which is essentially Texinfo input.
\def\readtocfile
{
%
\setupdatafile
\activecatcodes
\input
\jobname
.toc
}
\newskip\contentsrightmargin
\contentsrightmargin
=1in
\newcount\savepageno
\newcount\lastnegativepageno
\lastnegativepageno
= -1
% Prepare to read what we've written to \tocfile.
%
\def\startcontents
#1
{
%
% If @setchapternewpage on, and @headings double, the contents should
% start on an odd page, unlike chapters. Thus, we maintain
% \contentsalignmacro in parallel with \pagealignmacro.
% From: Torbjorn Granlund <tege@matematik.su.se>
\contentsalignmacro
\immediate\closeout\tocfile
%
% Don't need to put `Contents' or `Short Contents' in the headline.
% It is abundantly clear what they are.
\def\thischapter
{}
%
\chapmacro
{
#1
}{
Yomitfromtoc
}{}
%
%
\savepageno
=
\pageno
\begingroup
% Set up to handle contents files properly.
\raggedbottom
% Worry more about breakpoints than the bottom.
\advance\hsize
by -
\contentsrightmargin
% Don't use the full line length.
%
% Roman numerals for page numbers.
\ifnum
\pageno
>0
\global\pageno
=
\lastnegativepageno
\fi
}
% Normal (long) toc.
\def\contents
{
%
\startcontents
{
\putwordTOC
}
%
\openin
1
\jobname
.toc
\ifeof
1
\else
\readtocfile
\fi
\vfill
\eject
\contentsalignmacro
% in case @setchapternewpage odd is in effect
\ifeof
1
\else
\pdfmakeoutlines
\fi
\closein
1
\endgroup
\lastnegativepageno
=
\pageno
\global\pageno
=
\savepageno
}
% And just the chapters.
\def\summarycontents
{
%
\startcontents
{
\putwordShortTOC
}
%
%
\let\numchapentry
=
\shortchapentry
\let\appentry
=
\shortchapentry
\let\unnchapentry
=
\shortunnchapentry
% We want a true roman here for the page numbers.
\secfonts
\let\rm
=
\shortcontrm
\let\bf
=
\shortcontbf
\let\sl
=
\shortcontsl
\let\tt
=
\shortconttt
\rm
\hyphenpenalty
= 10000
\advance\baselineskip
by 1pt
% Open it up a little.
\def\numsecentry
##1##2##3##4
{}
\let\appsecentry
=
\numsecentry
\let\unnsecentry
=
\numsecentry
\let\numsubsecentry
=
\numsecentry
\let\appsubsecentry
=
\numsecentry
\let\unnsubsecentry
=
\numsecentry
\let\numsubsubsecentry
=
\numsecentry
\let\appsubsubsecentry
=
\numsecentry
\let\unnsubsubsecentry
=
\numsecentry
\openin
1
\jobname
.toc
\ifeof
1
\else
\readtocfile
\fi
\closein
1
\vfill
\eject
\contentsalignmacro
% in case @setchapternewpage odd is in effect
\endgroup
\lastnegativepageno
=
\pageno
\global\pageno
=
\savepageno
}
\let\shortcontents
=
\summarycontents
% Typeset the label for a chapter or appendix for the short contents.
% The arg is, e.g., `A' for an appendix, or `3' for a chapter.
%
\def\shortchaplabel
#1
{
%
% This space should be enough, since a single number is .5em, and the
% widest letter (M) is 1em, at least in the Computer Modern fonts.
% But use \hss just in case.
% (This space doesn't include the extra space that gets added after
% the label; that gets put in by \shortchapentry above.)
%
% We'd like to right-justify chapter numbers, but that looks strange
% with appendix letters. And right-justifying numbers and
% left-justifying letters looks strange when there is less than 10
% chapters. Have to read the whole toc once to know how many chapters
% there are before deciding ...
\hbox
to 1em
{
#1
\hss
}
%
}
% These macros generate individual entries in the table of contents.
% The first argument is the chapter or section name.
% The last argument is the page number.
% The arguments in between are the chapter number, section number, ...
% Chapters, in the main contents.
\def\numchapentry
#1#2#3#4
{
\dochapentry
{
#2
\labelspace
#1
}{
#4
}}
%
% Chapters, in the short toc.
% See comments in \dochapentry re vbox and related settings.
\def\shortchapentry
#1#2#3#4
{
%
\tocentry
{
\shortchaplabel
{
#2
}
\labelspace
#1
}{
\doshortpageno\bgroup
#4
\egroup
}
%
}
% Appendices, in the main contents.
% Need the word Appendix, and a fixed-size box.
%
\def\appendixbox
#1
{
%
% We use M since it's probably the widest letter.
\setbox
0 =
\hbox
{
\putwordAppendix
{}
M
}
%
\hbox
to
\wd
0
{
\putwordAppendix
{}
#1
\hss
}}
%
\def\appentry
#1#2#3#4
{
\dochapentry
{
\appendixbox
{
#2
}
\labelspace
#1
}{
#4
}}
% Unnumbered chapters.
\def\unnchapentry
#1#2#3#4
{
\dochapentry
{
#1
}{
#4
}}
\def\shortunnchapentry
#1#2#3#4
{
\tocentry
{
#1
}{
\doshortpageno\bgroup
#4
\egroup
}}
% Sections.
\def\numsecentry
#1#2#3#4
{
\dosecentry
{
#2
\labelspace
#1
}{
#4
}}
\let\appsecentry
=
\numsecentry
\def\unnsecentry
#1#2#3#4
{
\dosecentry
{
#1
}{
#4
}}
% Subsections.
\def\numsubsecentry
#1#2#3#4
{
\dosubsecentry
{
#2
\labelspace
#1
}{
#4
}}
\let\appsubsecentry
=
\numsubsecentry
\def\unnsubsecentry
#1#2#3#4
{
\dosubsecentry
{
#1
}{
#4
}}
% And subsubsections.
\def\numsubsubsecentry
#1#2#3#4
{
\dosubsubsecentry
{
#2
\labelspace
#1
}{
#4
}}
\let\appsubsubsecentry
=
\numsubsubsecentry
\def\unnsubsubsecentry
#1#2#3#4
{
\dosubsubsecentry
{
#1
}{
#4
}}
% This parameter controls the indentation of the various levels.
% Same as \defaultparindent.
\newdimen\tocindent
\tocindent
= 15pt
% Now for the actual typesetting. In all these, #1 is the text and #2 is the
% page number.
%
% If the toc has to be broken over pages, we want it to be at chapters
% if at all possible; hence the \penalty.
\def\dochapentry
#1#2
{
%
\penalty
-300
\vskip
1
\baselineskip
plus.33
\baselineskip
minus.25
\baselineskip
\begingroup
\chapentryfonts
\tocentry
{
#1
}{
\dopageno\bgroup
#2
\egroup
}
%
\endgroup
\nobreak\vskip
.25
\baselineskip
plus.1
\baselineskip
}
\def\dosecentry
#1#2
{
\begingroup
\secentryfonts
\leftskip
=
\tocindent
\tocentry
{
#1
}{
\dopageno\bgroup
#2
\egroup
}
%
\endgroup
}
\def\dosubsecentry
#1#2
{
\begingroup
\subsecentryfonts
\leftskip
=2
\tocindent
\tocentry
{
#1
}{
\dopageno\bgroup
#2
\egroup
}
%
\endgroup
}
\def\dosubsubsecentry
#1#2
{
\begingroup
\subsubsecentryfonts
\leftskip
=3
\tocindent
\tocentry
{
#1
}{
\dopageno\bgroup
#2
\egroup
}
%
\endgroup
}
% We use the same \entry macro as for the index entries.
\let\tocentry
=
\entry
% Space between chapter (or whatever) number and the title.
\def\labelspace
{
\hskip
1em
\relax
}
\def\dopageno
#1
{{
\rm
#1
}}
\def\doshortpageno
#1
{{
\rm
#1
}}
\def\chapentryfonts
{
\secfonts
\rm
}
\def\secentryfonts
{
\textfonts
}
\def\subsecentryfonts
{
\textfonts
}
\def\subsubsecentryfonts
{
\textfonts
}
\message
{
environments,
}
% @foo ... @end foo.
% @point{}, @result{}, @expansion{}, @print{}, @equiv{}.
%
% Since these characters are used in examples, it should be an even number of
% \tt widths. Each \tt character is 1en, so two makes it 1em.
%
\def\point
{
$
\star
$
}
\def\result
{
\leavevmode\raise
.15ex
\hbox
to 1em
{
\hfil
$
\Rightarrow
$
\hfil
}}
\def\expansion
{
\leavevmode\raise
.1ex
\hbox
to 1em
{
\hfil
$
\mapsto
$
\hfil
}}
\def\print
{
\leavevmode\lower
.1ex
\hbox
to 1em
{
\hfil
$
\dashv
$
\hfil
}}
\def\equiv
{
\leavevmode\lower
.1ex
\hbox
to 1em
{
\hfil
$
\ptexequiv
$
\hfil
}}
% The @error{} command.
% Adapted from the TeXbook's \boxit.
%
\newbox\errorbox
%
{
\tentt
\global\dimen
0 = 3em
}
% Width of the box.
\dimen
2 = .55pt
% Thickness of rules
% The text. (`r' is open on the right, `e' somewhat less so on the left.)
\setbox
0 =
\hbox
{
\kern
-.75pt
\reducedsf
error
\kern
-1.5pt
}
%
\setbox\errorbox
=
\hbox
to
\dimen
0
{
\hfil
\hsize
=
\dimen
0
\advance\hsize
by -5.8pt
% Space to left+right.
\advance\hsize
by -2
\dimen
2
% Rules.
\vbox
{
%
\hrule
height
\dimen
2
\hbox
{
\vrule
width
\dimen
2
\kern
3pt
% Space to left of text.
\vtop
{
\kern
2.4pt
\box
0
\kern
2.4pt
}
% Space above/below.
\kern
3pt
\vrule
width
\dimen
2
}
% Space to right.
\hrule
height
\dimen
2
}
\hfil
}
%
\def\error
{
\leavevmode\lower
.7ex
\copy\errorbox
}
% @tex ... @end tex escapes into raw Tex temporarily.
% One exception: @ is still an escape character, so that @end tex works.
% But \@ or @@ will get a plain tex @ character.
\envdef\tex
{
%
\catcode
`
\\
=0
\catcode
`
\{
=1
\catcode
`
\}
=2
\catcode
`
\$
=3
\catcode
`
\&
=4
\catcode
`
\#
=6
\catcode
`
\^
=7
\catcode
`
\_
=8
\catcode
`
\~
=
\active
\let
~=
\tie
\catcode
`
\%
=14
\catcode
`
\+
=
\other
\catcode
`
\"
=
\other
\catcode
`
\|
=
\other
\catcode
`
\<
=
\other
\catcode
`
\>
=
\other
\escapechar
=`
\\
%
\let\b
=
\ptexb
\let\bullet
=
\ptexbullet
\let\c
=
\ptexc
\let\,
=
\ptexcomma
\let\.
=
\ptexdot
\let\dots
=
\ptexdots
\let\equiv
=
\ptexequiv
\let\!
=
\ptexexclam
\let\i
=
\ptexi
\let\indent
=
\ptexindent
\let\noindent
=
\ptexnoindent
\let\{
=
\ptexlbrace
\let\+
=
\tabalign
\let\}
=
\ptexrbrace
\let\/
=
\ptexslash
\let\*
=
\ptexstar
\let\t
=
\ptext
\let\frenchspacing
=
\plainfrenchspacing
%
\def\endldots
{
\mathinner
{
\ldots\ldots\ldots\ldots
}}
%
\def\enddots
{
\relax\ifmmode\endldots\else
$
\mathsurround
=
0
pt
\endldots\,
$
\fi
}
%
\def\@
{
@
}
%
}
% There is no need to define \Etex.
% Define @lisp ... @end lisp.
% @lisp environment forms a group so it can rebind things,
% including the definition of @end lisp (which normally is erroneous).
% Amount to narrow the margins by for @lisp.
\newskip\lispnarrowing
\lispnarrowing
=0.4in
% This is the definition that ^^M gets inside @lisp, @example, and other
% such environments. \null is better than a space, since it doesn't
% have any width.
\def\lisppar
{
\null\endgraf
}
% This space is always present above and below environments.
\newskip\envskipamount
\envskipamount
= 0pt
% Make spacing and below environment symmetrical. We use \parskip here
% to help in doing that, since in @example-like environments \parskip
% is reset to zero; thus the \afterenvbreak inserts no space -- but the
% start of the next paragraph will insert \parskip.
%
\def\aboveenvbreak
{{
%
% =10000 instead of <10000 because of a special case in \itemzzz and
% \sectionheading, q.v.
\ifnum
\lastpenalty
=10000
\else
\advance\envskipamount
by
\parskip
\endgraf
\ifdim\lastskip
<
\envskipamount
\removelastskip
% it's not a good place to break if the last penalty was \nobreak
% or better ...
\ifnum\lastpenalty
<10000
\penalty
-50
\fi
\vskip\envskipamount
\fi
\fi
}}
\let\afterenvbreak
=
\aboveenvbreak
% \nonarrowing is a flag. If "set", @lisp etc don't narrow margins; it will
% also clear it, so that its embedded environments do the narrowing again.
\let\nonarrowing
=
\relax
% @cartouche ... @end cartouche: draw rectangle w/rounded corners around
% environment contents.
\font\circle
=lcircle10
\newdimen\circthick
\newdimen\cartouter\newdimen\cartinner
\newskip\normbskip\newskip\normpskip\newskip\normlskip
\circthick
=
\fontdimen
8
\circle
%
\def\ctl
{{
\circle\char
'013
\hskip
-6pt
}}
% 6pt from pl file: 1/2charwidth
\def\ctr
{{
\hskip
6pt
\circle\char
'010
}}
\def\cbl
{{
\circle\char
'012
\hskip
-6pt
}}
\def\cbr
{{
\hskip
6pt
\circle\char
'011
}}
\def\carttop
{
\hbox
to
\cartouter
{
\hskip\lskip
\ctl\leaders\hrule
height
\circthick\hfil\ctr
\hskip\rskip
}}
\def\cartbot
{
\hbox
to
\cartouter
{
\hskip\lskip
\cbl\leaders\hrule
height
\circthick\hfil\cbr
\hskip\rskip
}}
%
\newskip\lskip\newskip\rskip
\envdef\cartouche
{
%
\ifhmode\par\fi
% can't be in the midst of a paragraph.
\startsavinginserts
\lskip
=
\leftskip
\rskip
=
\rightskip
\leftskip
=0pt
\rightskip
=0pt
% we want these *outside*.
\cartinner
=
\hsize
\advance\cartinner
by-
\lskip
\advance\cartinner
by-
\rskip
\cartouter
=
\hsize
\advance\cartouter
by 18.4pt
% allow for 3pt kerns on either
% side, and for 6pt waste from
% each corner char, and rule thickness
\normbskip
=
\baselineskip
\normpskip
=
\parskip
\normlskip
=
\lineskip
% Flag to tell @lisp, etc., not to narrow margin.
\let\nonarrowing
= t
%
\vbox\bgroup
\baselineskip
=0pt
\parskip
=0pt
\lineskip
=0pt
\carttop
\hbox\bgroup
\hskip\lskip
\vrule\kern
3pt
\vbox\bgroup
\kern
3pt
\hsize
=
\cartinner
\baselineskip
=
\normbskip
\lineskip
=
\normlskip
\parskip
=
\normpskip
\vskip
-
\parskip
\comment
% For explanation, see the end of \def\group.
}
\def\Ecartouche
{
%
\ifhmode\par\fi
\kern
3pt
\egroup
\kern
3pt
\vrule
\hskip\rskip
\egroup
\cartbot
\egroup
\checkinserts
}
% This macro is called at the beginning of all the @example variants,
% inside a group.
\def\nonfillstart
{
%
\aboveenvbreak
\hfuzz
= 12pt
% Don't be fussy
\sepspaces
% Make spaces be word-separators rather than space tokens.
\let\par
=
\lisppar
% don't ignore blank lines
\obeylines
% each line of input is a line of output
\parskip
= 0pt
\parindent
= 0pt
\emergencystretch
= 0pt
% don't try to avoid overfull boxes
\ifx\nonarrowing\relax
\advance
\leftskip
by
\lispnarrowing
\exdentamount
=
\lispnarrowing
\else
\let\nonarrowing
=
\relax
\fi
\let\exdent
=
\nofillexdent
}
% If you want all examples etc. small: @set dispenvsize small.
% If you want even small examples the full size: @set dispenvsize nosmall.
% This affects the following displayed environments:
% @example, @display, @format, @lisp
%
\def\smallword
{
small
}
\def\nosmallword
{
nosmall
}
\let\SETdispenvsize\relax
\def\setnormaldispenv
{
%
\ifx\SETdispenvsize\smallword
\smallexamplefonts
\rm
\fi
}
\def\setsmalldispenv
{
%
\ifx\SETdispenvsize\nosmallword
\else
\smallexamplefonts
\rm
\fi
}
% We often define two environments, @foo and @smallfoo.
% Let's do it by one command:
\def\makedispenv
#1#2
{
\expandafter\envdef\csname
#1
\endcsname
{
\setnormaldispenv
#2
}
\expandafter\envdef\csname
small#1
\endcsname
{
\setsmalldispenv
#2
}
\expandafter\let\csname
E#1
\endcsname
\afterenvbreak
\expandafter\let\csname
Esmall#1
\endcsname
\afterenvbreak
}
% Define two synonyms:
\def\maketwodispenvs
#1#2#3
{
\makedispenv
{
#1
}{
#3
}
\makedispenv
{
#2
}{
#3
}
}
% @lisp: indented, narrowed, typewriter font; @example: same as @lisp.
%
% @smallexample and @smalllisp: use smaller fonts.
% Originally contributed by Pavel@xerox.
%
\maketwodispenvs
{
lisp
}{
example
}{
%
\nonfillstart
\tt\quoteexpand
\let\kbdfont
=
\kbdexamplefont
% Allow @kbd to do something special.
\gobble
% eat return
}
% @display/@smalldisplay: same as @lisp except keep current font.
%
\makedispenv
{
display
}{
%
\nonfillstart
\gobble
}
% @format/@smallformat: same as @display except don't narrow margins.
%
\makedispenv
{
format
}{
%
\let\nonarrowing
= t
%
\nonfillstart
\gobble
}
% @flushleft: same as @format, but doesn't obey \SETdispenvsize.
\envdef\flushleft
{
%
\let\nonarrowing
= t
%
\nonfillstart
\gobble
}
\let\Eflushleft
=
\afterenvbreak
% @flushright.
%
\envdef\flushright
{
%
\let\nonarrowing
= t
%
\nonfillstart
\advance\leftskip
by 0pt plus 1fill
\gobble
}
\let\Eflushright
=
\afterenvbreak
% @quotation does normal linebreaking (hence we can't use \nonfillstart)
% and narrows the margins. We keep \parskip nonzero in general, since
% we're doing normal filling. So, when using \aboveenvbreak and
% \afterenvbreak, temporarily make \parskip 0.
%
\envdef\quotation
{
%
{
\parskip
=0pt
\aboveenvbreak
}
% because \aboveenvbreak inserts \parskip
\parindent
=0pt
%
% @cartouche defines \nonarrowing to inhibit narrowing at next level down.
\ifx\nonarrowing\relax
\advance\leftskip
by
\lispnarrowing
\advance\rightskip
by
\lispnarrowing
\exdentamount
=
\lispnarrowing
\else
\let\nonarrowing
=
\relax
\fi
\parsearg\quotationlabel
}
% We have retained a nonzero parskip for the environment, since we're
% doing normal filling.
%
\def\Equotation
{
%
\par
\ifx\quotationauthor\undefined\else
% indent a bit.
\leftline
{
\kern
2
\leftskip
\sl
---
\quotationauthor
}
%
\fi
{
\parskip
=0pt
\afterenvbreak
}
%
}
% If we're given an argument, typeset it in bold with a colon after.
\def\quotationlabel
#1
{
%
\def\temp
{
#1
}
%
\ifx\temp\empty
\else
{
\bf
#1:
}
%
\fi
}
% LaTeX-like @verbatim...@end verbatim and @verb{<char>...<char>}
% If we want to allow any <char> as delimiter,
% we need the curly braces so that makeinfo sees the @verb command, eg:
% `@verbx...x' would look like the '@verbx' command. --janneke@gnu.org
%
% [Knuth]: Donald Ervin Knuth, 1996. The TeXbook.
%
% [Knuth] p.344; only we need to do the other characters Texinfo sets
% active too. Otherwise, they get lost as the first character on a
% verbatim line.
\def\dospecials
{
%
\do\ \do\\\do\{\do\}\do\$\do\&
%
\do\#\do\^\do\^
^
K
\do\_\do\^
^
A
\do\%\do\~
%
\do\<\do\>\do\|\do\@\do
+
\do\"
%
}
%
% [Knuth] p. 380
\def\uncatcodespecials
{
%
\def\do
##1
{
\catcode
`##1=
\other
}
\dospecials
}
%
% [Knuth] pp. 380,381,391
% Disable Spanish ligatures ?` and !` of \tt font
\begingroup
\catcode
`
\`
=
\active\gdef
`
{
\relax\lq
}
\endgroup
%
% Setup for the @verb command.
%
% Eight spaces for a tab
\begingroup
\catcode
`
\^
^
I=
\active
\gdef\tabeightspaces
{
\catcode
`
\^
^
I=
\active\def
^^
I
{
\ \ \ \ \ \ \ \
}}
\endgroup
%
\def\setupverb
{
%
\tt
% easiest (and conventionally used) font for verbatim
\def\par
{
\leavevmode\endgraf
}
%
\catcode
`
\`
=
\active
\tabeightspaces
% Respect line breaks,
% print special symbols as themselves, and
% make each space count
% must do in this order:
\obeylines
\uncatcodespecials
\sepspaces
}
% Setup for the @verbatim environment
%
% Real tab expansion
\newdimen\tabw
\setbox
0=
\hbox
{
\tt\space
}
\tabw
=8
\wd
0
% tab amount
%
\def\starttabbox
{
\setbox
0=
\hbox\bgroup
}
% Allow an option to not replace quotes with a regular directed right
% quote/apostrophe (char 0x27), but instead use the undirected quote
% from cmtt (char 0x0d). The undirected quote is ugly, so don't make it
% the default, but it works for pasting with more pdf viewers (at least
% evince), the lilypond developers report. xpdf does work with the
% regular 0x27.
%
\def\codequoteright
{
%
\expandafter\ifx\csname
SETcodequoteundirected
\endcsname\relax
'
%
\else
\char
'15
\fi
}
%
% and a similar option for the left quote char vs. a grave accent.
% Modern fonts display ASCII 0x60 as a grave accent, so some people like
% the code environments to do likewise.
%
\def\codequoteleft
{
%
\expandafter\ifx\csname
SETcodequotebacktick
\endcsname\relax
`
%
\else
\char
'22
\fi
}
%
\begingroup
\catcode
`
\^
^
I=
\active
\gdef\tabexpand
{
%
\catcode
`
\^
^
I=
\active
\def
^^
I
{
\leavevmode\egroup
\dimen
0=
\wd
0
% the width so far, or since the previous tab
\divide\dimen
0 by
\tabw
\multiply\dimen
0 by
\tabw
% compute previous multiple of \tabw
\advance\dimen
0 by
\tabw
% advance to next multiple of \tabw
\wd
0=
\dimen
0
\box
0
\starttabbox
}
%
}
\catcode
`
\'
=
\active
\gdef\rquoteexpand
{
\catcode\rquoteChar
=
\active
\def
'
{
\codequoteright
}}
%
%
\catcode
`
\`
=
\active
\gdef\lquoteexpand
{
\catcode\lquoteChar
=
\active
\def
`
{
\codequoteleft
}}
%
%
\gdef\quoteexpand
{
\rquoteexpand
\lquoteexpand
}
%
\endgroup
% start the verbatim environment.
\def\setupverbatim
{
%
\let\nonarrowing
= t
%
\nonfillstart
% Easiest (and conventionally used) font for verbatim
\tt
\def\par
{
\leavevmode\egroup\box
0
\endgraf
}
%
\catcode
`
\`
=
\active
\tabexpand
\quoteexpand
% Respect line breaks,
% print special symbols as themselves, and
% make each space count
% must do in this order:
\obeylines
\uncatcodespecials
\sepspaces
\everypar
{
\starttabbox
}
%
}
% Do the @verb magic: verbatim text is quoted by unique
% delimiter characters. Before first delimiter expect a
% right brace, after last delimiter expect closing brace:
%
% \def\doverb'{'<char>#1<char>'}'{#1}
%
% [Knuth] p. 382; only eat outer {}
\begingroup
\catcode
`[=1
\catcode
`]=2
\catcode
`
\{
=
\other\catcode
`
\}
=
\other
\gdef\doverb
{
#1[
\def\next
##1#1
}
[##1
\endgroup
]
\next
]
\endgroup
%
\def\verb
{
\begingroup\setupverb\doverb
}
%
%
% Do the @verbatim magic: define the macro \doverbatim so that
% the (first) argument ends when '@end verbatim' is reached, ie:
%
% \def\doverbatim#1@end verbatim{#1}
%
% For Texinfo it's a lot easier than for LaTeX,
% because texinfo's \verbatim doesn't stop at '\end{verbatim}':
% we need not redefine '\', '{' and '}'.
%
% Inspired by LaTeX's verbatim command set [latex.ltx]
%
\begingroup
\catcode
`
\
=
\active
\obeylines
%
% ignore everything up to the first ^^M, that's the newline at the end
% of the @verbatim input line itself. Otherwise we get an extra blank
% line in the output.
\xdef\doverbatim
#1
^^
M#2@end verbatim
{
#2
\noexpand\end\gobble
verbatim
}
%
% We really want {...\end verbatim} in the body of the macro, but
% without the active space; thus we have to use \xdef and \gobble.
\endgroup
%
\envdef\verbatim
{
%
\setupverbatim\doverbatim
}
\let\Everbatim
=
\afterenvbreak
% @verbatiminclude FILE - insert text of file in verbatim environment.
%
\def\verbatiminclude
{
\parseargusing\filenamecatcodes\doverbatiminclude
}
%
\def\doverbatiminclude
#1
{
%
{
%
\makevalueexpandable
\setupverbatim
\input
#1
\afterenvbreak
}
%
}
% @copying ... @end copying.
% Save the text away for @insertcopying later.
%
% We save the uninterpreted tokens, rather than creating a box.
% Saving the text in a box would be much easier, but then all the
% typesetting commands (@smallbook, font changes, etc.) have to be done
% beforehand -- and a) we want @copying to be done first in the source
% file; b) letting users define the frontmatter in as flexible order as
% possible is very desirable.
%
\def\copying
{
\checkenv
{}
\begingroup\scanargctxt\docopying
}
\def\docopying
#1@end copying
{
\endgroup\def\copyingtext
{
#1
}}
%
\def\insertcopying
{
%
\begingroup
\parindent
= 0pt
% paragraph indentation looks wrong on title page
\scanexp\copyingtext
\endgroup
}
\message
{
defuns,
}
% @defun etc.
\newskip\defbodyindent
\defbodyindent
=.4in
\newskip\defargsindent
\defargsindent
=50pt
\newskip\deflastargmargin
\deflastargmargin
=18pt
% Start the processing of @deffn:
\def\startdefun
{
%
\ifnum\lastpenalty
<10000
\medbreak
\else
% If there are two @def commands in a row, we'll have a \nobreak,
% which is there to keep the function description together with its
% header. But if there's nothing but headers, we need to allow a
% break somewhere. Check specifically for penalty 10002, inserted
% by \defargscommonending, instead of 10000, since the sectioning
% commands also insert a nobreak penalty, and we don't want to allow
% a break between a section heading and a defun.
%
\ifnum\lastpenalty
=10002
\penalty
2000
\fi
%
% Similarly, after a section heading, do not allow a break.
% But do insert the glue.
\medskip
% preceded by discardable penalty, so not a breakpoint
\fi
%
\parindent
=0in
\advance\leftskip
by
\defbodyindent
\exdentamount
=
\defbodyindent
}
\def\dodefunx
#1
{
%
% First, check whether we are in the right environment:
\checkenv
#1
%
%
% As above, allow line break if we have multiple x headers in a row.
% It's not a great place, though.
\ifnum\lastpenalty
=10002
\penalty
3000
\fi
%
% And now, it's time to reuse the body of the original defun:
\expandafter\gobbledefun
#1
%
}
\def\gobbledefun
#1
\startdefun
{}
% \printdefunline \deffnheader{text}
%
\def\printdefunline
#1#2
{
%
\begingroup
% call \deffnheader:
#1#2
\endheader
% common ending:
\interlinepenalty
= 10000
\advance\rightskip
by 0pt plus 1fil
\endgraf
\nobreak\vskip
-
\parskip
\penalty
10002
% signal to \startdefun and \dodefunx
% Some of the @defun-type tags do not enable magic parentheses,
% rendering the following check redundant. But we don't optimize.
\checkparencounts
\endgroup
}
\def\Edefun
{
\endgraf\medbreak
}
% \makedefun{deffn} creates \deffn, \deffnx and \Edeffn;
% the only thing remainnig is to define \deffnheader.
%
\def\makedefun
#1
{
%
\expandafter\let\csname
E#1
\endcsname
=
\Edefun
\edef\temp
{
\noexpand\domakedefun
\makecsname
{
#1
}
\makecsname
{
#1x
}
\makecsname
{
#1header
}}
%
\temp
}
% \domakedefun \deffn \deffnx \deffnheader
%
% Define \deffn and \deffnx, without parameters.
% \deffnheader has to be defined explicitly.
%
\def\domakedefun
#1#2#3
{
%
\envdef
#1
{
%
\startdefun
\parseargusing\activeparens
{
\printdefunline
#3
}
%
}
%
\def
#2
{
\dodefunx
#1
}
%
\def
#3
%
}
%%% Untyped functions:
% @deffn category name args
\makedefun
{
deffn
}{
\deffngeneral
{}}
% @deffn category class name args
\makedefun
{
defop
}
#1
{
\defopon
{
#1
\ \putwordon
}}
% \defopon {category on}class name args
\def\defopon
#1#2
{
\deffngeneral
{
\putwordon\ \code
{
#2
}}{
#1
\ \code
{
#2
}}
}
% \deffngeneral {subind}category name args
%
\def\deffngeneral
#1#2 #3 #4
\endheader
{
%
% Remember that \dosubind{fn}{foo}{} is equivalent to \doind{fn}{foo}.
\dosubind
{
fn
}{
\code
{
#3
}}{
#1
}
%
\defname
{
#2
}{}{
#3
}
\magicamp\defunargs
{
#4
\unskip
}
%
}
%%% Typed functions:
% @deftypefn category type name args
\makedefun
{
deftypefn
}{
\deftypefngeneral
{}}
% @deftypeop category class type name args
\makedefun
{
deftypeop
}
#1
{
\deftypeopon
{
#1
\ \putwordon
}}
% \deftypeopon {category on}class type name args
\def\deftypeopon
#1#2
{
\deftypefngeneral
{
\putwordon\ \code
{
#2
}}{
#1
\ \code
{
#2
}}
}
% \deftypefngeneral {subind}category type name args
%
\def\deftypefngeneral
#1#2 #3 #4 #5
\endheader
{
%
\dosubind
{
fn
}{
\code
{
#4
}}{
#1
}
%
\defname
{
#2
}{
#3
}{
#4
}
\defunargs
{
#5
\unskip
}
%
}
%%% Typed variables:
% @deftypevr category type var args
\makedefun
{
deftypevr
}{
\deftypecvgeneral
{}}
% @deftypecv category class type var args
\makedefun
{
deftypecv
}
#1
{
\deftypecvof
{
#1
\ \putwordof
}}
% \deftypecvof {category of}class type var args
\def\deftypecvof
#1#2
{
\deftypecvgeneral
{
\putwordof\ \code
{
#2
}}{
#1
\ \code
{
#2
}}
}
% \deftypecvgeneral {subind}category type var args
%
\def\deftypecvgeneral
#1#2 #3 #4 #5
\endheader
{
%
\dosubind
{
vr
}{
\code
{
#4
}}{
#1
}
%
\defname
{
#2
}{
#3
}{
#4
}
\defunargs
{
#5
\unskip
}
%
}
%%% Untyped variables:
% @defvr category var args
\makedefun
{
defvr
}
#1
{
\deftypevrheader
{
#1
}
{}
}
% @defcv category class var args
\makedefun
{
defcv
}
#1
{
\defcvof
{
#1
\ \putwordof
}}
% \defcvof {category of}class var args
\def\defcvof
#1#2
{
\deftypecvof
{
#1
}
#2
{}
}
%%% Type:
% @deftp category name args
\makedefun
{
deftp
}
#1 #2 #3
\endheader
{
%
\doind
{
tp
}{
\code
{
#2
}}
%
\defname
{
#1
}{}{
#2
}
\defunargs
{
#3
\unskip
}
%
}
% Remaining @defun-like shortcuts:
\makedefun
{
defun
}{
\deffnheader
{
\putwordDeffunc
}
}
\makedefun
{
defmac
}{
\deffnheader
{
\putwordDefmac
}
}
\makedefun
{
defspec
}{
\deffnheader
{
\putwordDefspec
}
}
\makedefun
{
deftypefun
}{
\deftypefnheader
{
\putwordDeffunc
}
}
\makedefun
{
defvar
}{
\defvrheader
{
\putwordDefvar
}
}
\makedefun
{
defopt
}{
\defvrheader
{
\putwordDefopt
}
}
\makedefun
{
deftypevar
}{
\deftypevrheader
{
\putwordDefvar
}
}
\makedefun
{
defmethod
}{
\defopon\putwordMethodon
}
\makedefun
{
deftypemethod
}{
\deftypeopon\putwordMethodon
}
\makedefun
{
defivar
}{
\defcvof\putwordInstanceVariableof
}
\makedefun
{
deftypeivar
}{
\deftypecvof\putwordInstanceVariableof
}
% \defname, which formats the name of the @def (not the args).
% #1 is the category, such as "Function".
% #2 is the return type, if any.
% #3 is the function name.
%
% We are followed by (but not passed) the arguments, if any.
%
\def\defname
#1#2#3
{
%
% Get the values of \leftskip and \rightskip as they were outside the @def...
\advance\leftskip
by -
\defbodyindent
%
% How we'll format the type name. Putting it in brackets helps
% distinguish it from the body text that may end up on the next line
% just below it.
\def\temp
{
#1
}
%
\setbox
0=
\hbox
{
\kern\deflastargmargin
\ifx\temp\empty\else
[
\rm\temp
]
\fi
}
%
% Figure out line sizes for the paragraph shape.
% The first line needs space for \box0; but if \rightskip is nonzero,
% we need only space for the part of \box0 which exceeds it:
\dimen
0=
\hsize
\advance\dimen
0 by -
\wd
0
\advance\dimen
0 by
\rightskip
% The continuations:
\dimen
2=
\hsize
\advance\dimen
2 by -
\defargsindent
% (plain.tex says that \dimen1 should be used only as global.)
\parshape
2 0in
\dimen
0
\defargsindent
\dimen
2
%
% Put the type name to the right margin.
\noindent
\hbox
to 0pt
{
%
\hfil\box
0
\kern
-
\hsize
% \hsize has to be shortened this way:
\kern\leftskip
% Intentionally do not respect \rightskip, since we need the space.
}
%
%
% Allow all lines to be underfull without complaint:
\tolerance
=10000
\hbadness
=10000
\exdentamount
=
\defbodyindent
{
%
% defun fonts. We use typewriter by default (used to be bold) because:
% . we're printing identifiers, they should be in tt in principle.
% . in languages with many accents, such as Czech or French, it's
% common to leave accents off identifiers. The result looks ok in
% tt, but exceedingly strange in rm.
% . we don't want -- and --- to be treated as ligatures.
% . this still does not fix the ?` and !` ligatures, but so far no
% one has made identifiers using them :).
\df
\tt
\def\temp
{
#2
}
% return value type
\ifx\temp\empty\else
\tclose
{
\temp
}
\fi
#3
% output function name
}
%
{
\rm\enskip
}
% hskip 0.5 em of \tenrm
%
\boldbrax
% arguments will be output next, if any.
}
% Print arguments in slanted roman (not ttsl), inconsistently with using
% tt for the name. This is because literal text is sometimes needed in
% the argument list (groff manual), and ttsl and tt are not very
% distinguishable. Prevent hyphenation at `-' chars.
%
\def\defunargs
#1
{
%
% use sl by default (not ttsl),
% tt for the names.
\df
\sl
\hyphenchar\font
=0
%
% On the other hand, if an argument has two dashes (for instance), we
% want a way to get ttsl. Let's try @var for that.
\let\var
=
\ttslanted
#1
%
\sl\hyphenchar\font
=45
}
% We want ()&[] to print specially on the defun line.
%
\def\activeparens
{
%
\catcode
`
\(
=
\active
\catcode
`
\)
=
\active
\catcode
`
\[
=
\active
\catcode
`
\]
=
\active
\catcode
`
\&
=
\active
}
% Make control sequences which act like normal parenthesis chars.
\let\lparen
= (
\let\rparen
= )
% Be sure that we always have a definition for `(', etc. For example,
% if the fn name has parens in it, \boldbrax will not be in effect yet,
% so TeX would otherwise complain about undefined control sequence.
{
\activeparens
\global\let
(=
\lparen
\global\let
)=
\rparen
\global\let
[=\lbrack \global\let]
=
\rbrack
\global\let
&
=
\&
\gdef\boldbrax
{
\let
(=
\opnr\let
)=
\clnr\let
[=\lbrb\let]
=
\rbrb
}
\gdef\magicamp
{
\let
&
=
\amprm
}
}
\newcount\parencount
% If we encounter &foo, then turn on ()-hacking afterwards
\newif\ifampseen
\def\amprm
#1
{
\ampseentrue
{
\bf\&
#1
}}
\def\parenfont
{
%
\ifampseen
% At the first level, print parens in roman,
% otherwise use the default font.
\ifnum
\parencount
=1
\rm
\fi
\else
% The \sf parens (in \boldbrax) actually are a little bolder than
% the contained text. This is especially needed for [ and ] .
\sf
\fi
}
\def\infirstlevel
#1
{
%
\ifampseen
\ifnum\parencount
=1
#1
%
\fi
\fi
}
\def\bfafterword
#1
{
#1
\bf
}
\def\opnr
{
%
\global\advance\parencount
by 1
{
\parenfont
(
}
%
\infirstlevel
\bfafterword
}
\def\clnr
{
%
{
\parenfont
)
}
%
\infirstlevel
\sl
\global\advance\parencount
by -1
}
\newcount\brackcount
\def\lbrb
{
%
\global\advance\brackcount
by 1
{
\bf
[
}
%
}
\def\rbrb
{
%
{
\bf
]
}
%
\global\advance\brackcount
by -1
}
\def\checkparencounts
{
%
\ifnum\parencount
=0
\else
\badparencount
\fi
\ifnum\brackcount
=0
\else
\badbrackcount
\fi
}
\def\badparencount
{
%
\errmessage
{
Unbalanced parentheses in @def
}
%
\global\parencount
=0
}
\def\badbrackcount
{
%
\errmessage
{
Unbalanced square braces in @def
}
%
\global\brackcount
=0
}
\message
{
macros,
}
% @macro.
% To do this right we need a feature of e-TeX, \scantokens,
% which we arrange to emulate with a temporary file in ordinary TeX.
\ifx\eTeXversion\undefined
\newwrite\macscribble
\def\scantokens
#1
{
%
\toks
0=
{
#1
}
%
\immediate\openout\macscribble
=
\jobname
.tmp
\immediate\write\macscribble
{
\the\toks
0
}
%
\immediate\closeout\macscribble
\input
\jobname
.tmp
}
\fi
\def\scanmacro
#1
{
%
\begingroup
\newlinechar
`
\^
^
M
\let\xeatspaces\eatspaces
% Undo catcode changes of \startcontents and \doprintindex
% When called from @insertcopying or (short)caption, we need active
% backslash to get it printed correctly. Previously, we had
% \catcode`\\=\other instead. We'll see whether a problem appears
% with macro expansion. --kasal, 19aug04
\catcode
`
\@
=0
\catcode
`
\\
=
\active
\escapechar
=`
\@
% ... and \example
\spaceisspace
%
% Append \endinput to make sure that TeX does not see the ending newline.
% I've verified that it is necessary both for e-TeX and for ordinary TeX
% --kasal, 29nov03
\scantokens
{
#1
\endinput
}
%
\endgroup
}
\def\scanexp
#1
{
%
\edef\temp
{
\noexpand\scanmacro
{
#1
}}
%
\temp
}
\newcount\paramno
% Count of parameters
\newtoks\macname
% Macro name
\newif\ifrecursive
% Is it recursive?
% List of all defined macros in the form
% \definedummyword\macro1\definedummyword\macro2...
% Currently is also contains all @aliases; the list can be split
% if there is a need.
\def\macrolist
{}
% Add the macro to \macrolist
\def\addtomacrolist
#1
{
\expandafter
\addtomacrolistxxx
\csname
#1
\endcsname
}
\def\addtomacrolistxxx
#1
{
%
\toks
0 =
\expandafter
{
\macrolist\definedummyword
#1
}
%
\xdef\macrolist
{
\the\toks
0
}
%
}
% Utility routines.
% This does \let #1 = #2, with \csnames; that is,
% \let \csname#1\endcsname = \csname#2\endcsname
% (except of course we have to play expansion games).
%
\def\cslet
#1#2
{
%
\expandafter\let
\csname
#1
\expandafter\endcsname
\csname
#2
\endcsname
}
% Trim leading and trailing spaces off a string.
% Concepts from aro-bend problem 15 (see CTAN).
{
\catcode
`
\@
=11
\gdef\eatspaces
#1
{
\expandafter\trim
@
\expandafter
{
#1
}}
\gdef\trim
@ #1
{
\trim
@@ @#1 @ #1 @ @@
}
\gdef\trim
@@ #1@ #2@ #3@@
{
\trim
@@@
\empty
#2 @
}
\def\unbrace
#1
{
#1
}
\unbrace
{
\gdef\trim
@@@ #1
}
#2@
{
#1
}
}
% Trim a single trailing ^^M off a string.
{
\catcode
`
\^
^
M=
\other
\catcode
`
\Q
=3
%
\gdef\eatcr
#1
{
\eatcra
#1Q
^^
MQ
}
%
\gdef\eatcra
#1
^^
MQ
{
\eatcrb
#1Q
}
%
\gdef\eatcrb
#1Q#2Q
{
#1
}
%
}
% Macro bodies are absorbed as an argument in a context where
% all characters are catcode 10, 11 or 12, except \ which is active
% (as in normal texinfo). It is necessary to change the definition of \.
% It's necessary to have hard CRs when the macro is executed. This is
% done by making ^^M (\endlinechar) catcode 12 when reading the macro
% body, and then making it the \newlinechar in \scanmacro.
\def\scanctxt
{
%
\catcode
`
\"
=
\other
\catcode
`
\+
=
\other
\catcode
`
\<
=
\other
\catcode
`
\>
=
\other
\catcode
`
\@
=
\other
\catcode
`
\^
=
\other
\catcode
`
\_
=
\other
\catcode
`
\|
=
\other
\catcode
`
\~
=
\other
}
\def\scanargctxt
{
%
\scanctxt
\catcode
`
\\
=
\other
\catcode
`
\^
^
M=
\other
}
\def\macrobodyctxt
{
%
\scanctxt
\catcode
`
\{
=
\other
\catcode
`
\}
=
\other
\catcode
`
\^
^
M=
\other
\usembodybackslash
}
\def\macroargctxt
{
%
\scanctxt
\catcode
`
\\
=
\other
}
% \mbodybackslash is the definition of \ in @macro bodies.
% It maps \foo\ => \csname macarg.foo\endcsname => #N
% where N is the macro parameter number.
% We define \csname macarg.\endcsname to be \realbackslash, so
% \\ in macro replacement text gets you a backslash.
{
\catcode
`@=0 @catcode`@
\=
@active
@gdef@usembodybackslash
{
@let
\=
@mbodybackslash
}
@gdef@mbodybackslash#1
\{
@csname macarg.#1@endcsname
}
}
\expandafter\def\csname
macarg.
\endcsname
{
\realbackslash
}
\def\macro
{
\recursivefalse\parsearg\macroxxx
}
\def\rmacro
{
\recursivetrue\parsearg\macroxxx
}
\def\macroxxx
#1
{
%
\getargs
{
#1
}
% now \macname is the macname and \argl the arglist
\ifx\argl\empty
% no arguments
\paramno
=0
%
\else
\expandafter\parsemargdef
\argl
;
%
\fi
\if
1
\csname
ismacro.
\the\macname\endcsname
\message
{
Warning: redefining
\the\macname
}
%
\else
\expandafter\ifx\csname
\the\macname\endcsname
\relax
\else
\errmessage
{
Macro name
\the\macname\space
already defined
}
\fi
\global\cslet
{
macsave.
\the\macname
}{
\the\macname
}
%
\global\expandafter\let\csname
ismacro.
\the\macname\endcsname
=1
%
\addtomacrolist
{
\the\macname
}
%
\fi
\begingroup
\macrobodyctxt
\ifrecursive
\expandafter\parsermacbody
\else
\expandafter\parsemacbody
\fi
}
\parseargdef\unmacro
{
%
\if
1
\csname
ismacro.#1
\endcsname
\global\cslet
{
#1
}{
macsave.#1
}
%
\global\expandafter\let
\csname
ismacro.#1
\endcsname
=0
%
% Remove the macro name from \macrolist:
\begingroup
\expandafter\let\csname
#1
\endcsname
\relax
\let\definedummyword\unmacrodo
\xdef\macrolist
{
\macrolist
}
%
\endgroup
\else
\errmessage
{
Macro #1 not defined
}
%
\fi
}
% Called by \do from \dounmacro on each macro. The idea is to omit any
% macro definitions that have been changed to \relax.
%
\def\unmacrodo
#1
{
%
\ifx
#1
\relax
% remove this
\else
\noexpand\definedummyword
\noexpand
#1
%
\fi
}
% This makes use of the obscure feature that if the last token of a
% <parameter list> is #, then the preceding argument is delimited by
% an opening brace, and that opening brace is not consumed.
\def\getargs
#1
{
\getargsxxx
#1
{}}
\def\getargsxxx
#1#
{
\getmacname
#1
\relax\getmacargs
}
\def\getmacname
#1 #2
\relax
{
\macname
=
{
#1
}}
\def\getmacargs
#1
{
\def\argl
{
#1
}}
% Parse the optional {params} list. Set up \paramno and \paramlist
% so \defmacro knows what to do. Define \macarg.blah for each blah
% in the params list, to be ##N where N is the position in that list.
% That gets used by \mbodybackslash (above).
% We need to get `macro parameter char #' into several definitions.
% The technique used is stolen from LaTeX: let \hash be something
% unexpandable, insert that wherever you need a #, and then redefine
% it to # just before using the token list produced.
%
% The same technique is used to protect \eatspaces till just before
% the macro is used.
\def\parsemargdef
#1;
{
\paramno
=0
\def\paramlist
{}
%
\let\hash\relax\let\xeatspaces\relax\parsemargdefxxx
#1,;,
}
\def\parsemargdefxxx
#1,
{
%
\if
#1;
\let\next
=
\relax
\else
\let\next
=
\parsemargdefxxx
\advance\paramno
by 1
%
\expandafter\edef\csname
macarg.
\eatspaces
{
#1
}
\endcsname
{
\xeatspaces
{
\hash\the\paramno
}}
%
\edef\paramlist
{
\paramlist\hash\the\paramno
,
}
%
\fi\next
}
% These two commands read recursive and nonrecursive macro bodies.
% (They're different since rec and nonrec macros end differently.)
\long\def\parsemacbody
#1@end macro
%
{
\xdef\temp
{
\eatcr
{
#1
}}
\endgroup\defmacro
}
%
\long\def\parsermacbody
#1@end rmacro
%
{
\xdef\temp
{
\eatcr
{
#1
}}
\endgroup\defmacro
}
%
% This defines the macro itself. There are six cases: recursive and
% nonrecursive macros of zero, one, and many arguments.
% Much magic with \expandafter here.
% \xdef is used so that macro definitions will survive the file
% they're defined in; @include reads the file inside a group.
\def\defmacro
{
%
\let\hash
=##
% convert placeholders to macro parameter chars
\ifrecursive
\ifcase\paramno
% 0
\expandafter\xdef\csname\the\macname\endcsname
{
%
\noexpand\scanmacro
{
\temp
}}
%
\or
% 1
\expandafter\xdef\csname\the\macname\endcsname
{
%
\bgroup\noexpand\macroargctxt
\noexpand\braceorline
\expandafter\noexpand\csname\the\macname
xxx
\endcsname
}
%
\expandafter\xdef\csname\the\macname
xxx
\endcsname
##1
{
%
\egroup\noexpand\scanmacro
{
\temp
}}
%
\else
% many
\expandafter\xdef\csname\the\macname\endcsname
{
%
\bgroup\noexpand\macroargctxt
\noexpand\csname\the\macname
xx
\endcsname
}
%
\expandafter\xdef\csname\the\macname
xx
\endcsname
##1
{
%
\expandafter\noexpand\csname\the\macname
xxx
\endcsname
##1,
}
%
\expandafter\expandafter
\expandafter\xdef
\expandafter\expandafter
\csname\the\macname
xxx
\endcsname
\paramlist
{
\egroup\noexpand\scanmacro
{
\temp
}}
%
\fi
\else
\ifcase\paramno
% 0
\expandafter\xdef\csname\the\macname\endcsname
{
%
\noexpand\norecurse
{
\the\macname
}
%
\noexpand\scanmacro
{
\temp
}
\egroup
}
%
\or
% 1
\expandafter\xdef\csname\the\macname\endcsname
{
%
\bgroup\noexpand\macroargctxt
\noexpand\braceorline
\expandafter\noexpand\csname\the\macname
xxx
\endcsname
}
%
\expandafter\xdef\csname\the\macname
xxx
\endcsname
##1
{
%
\egroup
\noexpand\norecurse
{
\the\macname
}
%
\noexpand\scanmacro
{
\temp
}
\egroup
}
%
\else
% many
\expandafter\xdef\csname\the\macname\endcsname
{
%
\bgroup\noexpand\macroargctxt
\expandafter\noexpand\csname\the\macname
xx
\endcsname
}
%
\expandafter\xdef\csname\the\macname
xx
\endcsname
##1
{
%
\expandafter\noexpand\csname\the\macname
xxx
\endcsname
##1,
}
%
\expandafter\expandafter
\expandafter\xdef
\expandafter\expandafter
\csname\the\macname
xxx
\endcsname
\paramlist
{
%
\egroup
\noexpand\norecurse
{
\the\macname
}
%
\noexpand\scanmacro
{
\temp
}
\egroup
}
%
\fi
\fi
}
\def\norecurse
#1
{
\bgroup\cslet
{
#1
}{
macsave.#1
}}
% \braceorline decides whether the next nonwhitespace character is a
% {. If so it reads up to the closing }, if not, it reads the whole
% line. Whatever was read is then fed to the next control sequence
% as an argument (by \parsebrace or \parsearg)
\def\braceorline
#1
{
\let\macnamexxx
=#1
\futurelet\nchar\braceorlinexxx
}
\def\braceorlinexxx
{
%
\ifx\nchar\bgroup\else
\expandafter\parsearg
\fi
\macnamexxx
}
% @alias.
% We need some trickery to remove the optional spaces around the equal
% sign. Just make them active and then expand them all to nothing.
\def\alias
{
\parseargusing\obeyspaces\aliasxxx
}
\def\aliasxxx
#1
{
\aliasyyy
#1
\relax
}
\def\aliasyyy
#1=#2
\relax
{
%
{
%
\expandafter\let\obeyedspace
=
\empty
\addtomacrolist
{
#1
}
%
\xdef\next
{
\global\let\makecsname
{
#1
}
=
\makecsname
{
#2
}}
%
}
%
\next
}
\message
{
cross references,
}
\newwrite\auxfile
\newif\ifhavexrefs
% True if xref values are known.
\newif\ifwarnedxrefs
% True if we warned once that they aren't known.
% @inforef is relatively simple.
\def\inforef
#1
{
\inforefzzz
#1,,,,**
}
\def\inforefzzz
#1,#2,#3,#4**
{
\putwordSee
{}
\putwordInfo
{}
\putwordfile
{}
\file
{
\ignorespaces
#3
{}}
,
node
\samp
{
\ignorespaces
#1
{}}}
% @node's only job in TeX is to define \lastnode, which is used in
% cross-references. The @node line might or might not have commas, and
% might or might not have spaces before the first comma, like:
% @node foo , bar , ...
% We don't want such trailing spaces in the node name.
%
\parseargdef\node
{
\checkenv
{}
\donode
#1 ,
\finishnodeparse
}
%
% also remove a trailing comma, in case of something like this:
% @node Help-Cross, , , Cross-refs
\def\donode
#1 ,#2
\finishnodeparse
{
\dodonode
#1,
\finishnodeparse
}
\def\dodonode
#1,#2
\finishnodeparse
{
\gdef\lastnode
{
#1
}}
\let\nwnode
=
\node
\let\lastnode
=
\empty
% Write a cross-reference definition for the current node. #1 is the
% type (Ynumbered, Yappendix, Ynothing).
%
\def\donoderef
#1
{
%
\ifx\lastnode\empty\else
\setref
{
\lastnode
}{
#1
}
%
\global\let\lastnode
=
\empty
\fi
}
% @anchor{NAME} -- define xref target at arbitrary point.
%
\newcount\savesfregister
%
\def\savesf
{
\relax
\ifhmode
\savesfregister
=
\spacefactor
\fi
}
\def\restoresf
{
\relax
\ifhmode
\spacefactor
=
\savesfregister
\fi
}
\def\anchor
#1
{
\savesf
\setref
{
#1
}{
Ynothing
}
\restoresf
\ignorespaces
}
% \setref{NAME}{SNT} defines a cross-reference point NAME (a node or an
% anchor), which consists of three parts:
% 1) NAME-title - the current sectioning name taken from \thissection,
% or the anchor name.
% 2) NAME-snt - section number and type, passed as the SNT arg, or
% empty for anchors.
% 3) NAME-pg - the page number.
%
% This is called from \donoderef, \anchor, and \dofloat. In the case of
% floats, there is an additional part, which is not written here:
% 4) NAME-lof - the text as it should appear in a @listoffloats.
%
\def\setref
#1#2
{
%
\pdfmkdest
{
#1
}
%
\iflinks
{
%
\atdummies
% preserve commands, but don't expand them
\edef\writexrdef
##1##2
{
%
\write\auxfile
{
@xrdef
{
#1-
% #1 of \setref, expanded by the \edef
##1
}{
##2
}}
% these are parameters of \writexrdef
}
%
\toks
0 =
\expandafter
{
\thissection
}
%
\immediate
\writexrdef
{
title
}{
\the\toks
0
}
%
\immediate
\writexrdef
{
snt
}{
\csname
#2
\endcsname
}
% \Ynumbered etc.
\writexrdef
{
pg
}{
\folio
}
% will be written later, during \shipout
}
%
\fi
}
% @xref, @pxref, and @ref generate cross-references. For \xrefX, #1 is
% the node name, #2 the name of the Info cross-reference, #3 the printed
% node name, #4 the name of the Info file, #5 the name of the printed
% manual. All but the node name can be omitted.
%
\def\pxref
#1
{
\putwordsee
{}
\xrefX
[#1,,,,,,,]
}
\def\xref
#1
{
\putwordSee
{}
\xrefX
[#1,,,,,,,]
}
\def\ref
#1
{
\xrefX
[#1,,,,,,,]
}
\def\xrefX
[#1,#2,#3,#4,#5,#6]
{
\begingroup
\unsepspaces
\def\printedmanual
{
\ignorespaces
#5
}
%
\def\printedrefname
{
\ignorespaces
#3
}
%
\setbox
1=
\hbox
{
\printedmanual\unskip
}
%
\setbox
0=
\hbox
{
\printedrefname\unskip
}
%
\ifdim
\wd
0 = 0pt
% No printed node name was explicitly given.
\expandafter\ifx\csname
SETxref-automatic-section-title
\endcsname\relax
% Use the node name inside the square brackets.
\def\printedrefname
{
\ignorespaces
#1
}
%
\else
% Use the actual chapter/section title appear inside
% the square brackets. Use the real section title if we have it.
\ifdim
\wd
1 > 0pt
% It is in another manual, so we don't have it.
\def\printedrefname
{
\ignorespaces
#1
}
%
\else
\ifhavexrefs
% We know the real title if we have the xref values.
\def\printedrefname
{
\refx
{
#1-title
}{}}
%
\else
% Otherwise just copy the Info node name.
\def\printedrefname
{
\ignorespaces
#1
}
%
\fi
%
\fi
\fi
\fi
%
% Make link in pdf output.
\ifpdf
\leavevmode
\getfilename
{
#4
}
%
{
\turnoffactive
% See comments at \activebackslashdouble.
{
\activebackslashdouble
\xdef\pdfxrefdest
{
#1
}
%
\backslashparens\pdfxrefdest
}
%
%
\ifnum\filenamelength
>0
\startlink
attr
{
/Border [0 0 0]
}
%
goto file
{
\the\filename
.pdf
}
name
{
\pdfxrefdest
}
%
\else
\startlink
attr
{
/Border [0 0 0]
}
%
goto name
{
\pdfmkpgn
{
\pdfxrefdest
}}
%
\fi
}
%
\linkcolor
\fi
%
% Float references are printed completely differently: "Figure 1.2"
% instead of "[somenode], p.3". We distinguish them by the
% LABEL-title being set to a magic string.
{
%
% Have to otherify everything special to allow the \csname to
% include an _ in the xref name, etc.
\indexnofonts
\turnoffactive
\expandafter\global\expandafter\let\expandafter\Xthisreftitle
\csname
XR#1-title
\endcsname
}
%
\iffloat\Xthisreftitle
% If the user specified the print name (third arg) to the ref,
% print it instead of our usual "Figure 1.2".
\ifdim\wd
0 = 0pt
\refx
{
#1-snt
}{}
%
\else
\printedrefname
\fi
%
% if the user also gave the printed manual name (fifth arg), append
% "in MANUALNAME".
\ifdim
\wd
1 > 0pt
\space
\putwordin
{}
\cite
{
\printedmanual
}
%
\fi
\else
% node/anchor (non-float) references.
%
% If we use \unhbox0 and \unhbox1 to print the node names, TeX does not
% insert empty discretionaries after hyphens, which means that it will
% not find a line break at a hyphen in a node names. Since some manuals
% are best written with fairly long node names, containing hyphens, this
% is a loss. Therefore, we give the text of the node name again, so it
% is as if TeX is seeing it for the first time.
\ifdim
\wd
1 > 0pt
\putwordsection
{}
``
\printedrefname
''
\putwordin
{}
\cite
{
\printedmanual
}
%
\else
% _ (for example) has to be the character _ for the purposes of the
% control sequence corresponding to the node, but it has to expand
% into the usual \leavevmode...\vrule stuff for purposes of
% printing. So we \turnoffactive for the \refx-snt, back on for the
% printing, back off for the \refx-pg.
{
\turnoffactive
% Only output a following space if the -snt ref is nonempty; for
% @unnumbered and @anchor, it won't be.
\setbox
2 =
\hbox
{
\ignorespaces
\refx
{
#1-snt
}{}}
%
\ifdim
\wd
2 > 0pt
\refx
{
#1-snt
}
\space\fi
}
%
% output the `[mynode]' via a macro so it can be overridden.
\xrefprintnodename\printedrefname
%
% But we always want a comma and a space:
,
\space
%
% output the `page 3'.
\turnoffactive
\putwordpage\tie\refx
{
#1-pg
}{}
%
\fi
\fi
\endlink
\endgroup
}
% This macro is called from \xrefX for the `[nodename]' part of xref
% output. It's a separate macro only so it can be changed more easily,
% since square brackets don't work well in some documents. Particularly
% one that Bob is working on :).
%
\def\xrefprintnodename
#1
{
[#1]
}
% Things referred to by \setref.
%
\def\Ynothing
{}
\def\Yomitfromtoc
{}
\def\Ynumbered
{
%
\ifnum\secno
=0
\putwordChapter
@tie
\the\chapno
\else
\ifnum\subsecno
=0
\putwordSection
@tie
\the\chapno
.
\the\secno
\else
\ifnum\subsubsecno
=0
\putwordSection
@tie
\the\chapno
.
\the\secno
.
\the\subsecno
\else
\putwordSection
@tie
\the\chapno
.
\the\secno
.
\the\subsecno
.
\the\subsubsecno
\fi\fi\fi
}
\def\Yappendix
{
%
\ifnum\secno
=0
\putwordAppendix
@tie @char
\the\appendixno
{}
%
\else
\ifnum\subsecno
=0
\putwordSection
@tie @char
\the\appendixno
.
\the\secno
\else
\ifnum\subsubsecno
=0
\putwordSection
@tie @char
\the\appendixno
.
\the\secno
.
\the\subsecno
\else
\putwordSection
@tie
@char
\the\appendixno
.
\the\secno
.
\the\subsecno
.
\the\subsubsecno
\fi\fi\fi
}
% Define \refx{NAME}{SUFFIX} to reference a cross-reference string named NAME.
% If its value is nonempty, SUFFIX is output afterward.
%
\def\refx
#1#2
{
%
{
%
\indexnofonts
\otherbackslash
\expandafter\global\expandafter\let\expandafter\thisrefX
\csname
XR#1
\endcsname
}
%
\ifx\thisrefX\relax
% If not defined, say something at least.
\angleleft
un
\-
de
\-
fined
\angleright
\iflinks
\ifhavexrefs
\message
{
\linenumber
Undefined cross reference `#1'.
}
%
\else
\ifwarnedxrefs\else
\global\warnedxrefstrue
\message
{
Cross reference values unknown; you must run TeX again.
}
%
\fi
\fi
\fi
\else
% It's defined, so just use it.
\thisrefX
\fi
#2
% Output the suffix in any case.
}
% This is the macro invoked by entries in the aux file. Usually it's
% just a \def (we prepend XR to the control sequence name to avoid
% collisions). But if this is a float type, we have more work to do.
%
\def\xrdef
#1#2
{
%
\expandafter\gdef\csname
XR#1
\endcsname
{
#2
}
% remember this xref value.
%
% Was that xref control sequence that we just defined for a float?
\expandafter\iffloat\csname
XR#1
\endcsname
% it was a float, and we have the (safe) float type in \iffloattype.
\expandafter\let\expandafter\floatlist
\csname
floatlist
\iffloattype\endcsname
%
% Is this the first time we've seen this float type?
\expandafter\ifx\floatlist\relax
\toks
0 =
{
\do
}
% yes, so just \do
\else
% had it before, so preserve previous elements in list.
\toks
0 =
\expandafter
{
\floatlist\do
}
%
\fi
%
% Remember this xref in the control sequence \floatlistFLOATTYPE,
% for later use in \listoffloats.
\expandafter\xdef\csname
floatlist
\iffloattype\endcsname
{
\the\toks
0
{
#1
}}
%
\fi
}
% Read the last existing aux file, if any. No error if none exists.
%
\def\tryauxfile
{
%
\openin
1
\jobname
.aux
\ifeof
1
\else
\readdatafile
{
aux
}
%
\global\havexrefstrue
\fi
\closein
1
}
\def\setupdatafile
{
%
\catcode
`
\^
^
@=
\other
\catcode
`
\^
^
A=
\other
\catcode
`
\^
^
B=
\other
\catcode
`
\^
^
C=
\other
\catcode
`
\^
^
D=
\other
\catcode
`
\^
^
E=
\other
\catcode
`
\^
^
F=
\other
\catcode
`
\^
^
G=
\other
\catcode
`
\^
^
H=
\other
\catcode
`
\^
^
K=
\other
\catcode
`
\^
^
L=
\other
\catcode
`
\^
^
N=
\other
\catcode
`
\^
^
P=
\other
\catcode
`
\^
^
Q=
\other
\catcode
`
\^
^
R=
\other
\catcode
`
\^
^
S=
\other
\catcode
`
\^
^
T=
\other
\catcode
`
\^
^
U=
\other
\catcode
`
\^
^
V=
\other
\catcode
`
\^
^
W=
\other
\catcode
`
\^
^
X=
\other
\catcode
`
\^
^
Z=
\other
\catcode
`
\^
^
[=
\other
\catcode
`
\^
^
\=\other
\catcode
`
\^
^
]=
\other
\catcode
`
\^
^^
=
\other
\catcode
`
\^
^_
=
\other
% It was suggested to set the catcode of ^ to 7, which would allow ^^e4 etc.
% in xref tags, i.e., node names. But since ^^e4 notation isn't
% supported in the main text, it doesn't seem desirable. Furthermore,
% that is not enough: for node names that actually contain a ^
% character, we would end up writing a line like this: 'xrdef {'hat
% b-title}{'hat b} and \xrdef does a \csname...\endcsname on the first
% argument, and \hat is not an expandable control sequence. It could
% all be worked out, but why? Either we support ^^ or we don't.
%
% The other change necessary for this was to define \auxhat:
% \def\auxhat{\def^{'hat }}% extra space so ok if followed by letter
% and then to call \auxhat in \setq.
%
\catcode
`
\^
=
\other
%
% Special characters. Should be turned off anyway, but...
\catcode
`
\~
=
\other
\catcode
`
\[
=
\other
\catcode
`
\]
=
\other
\catcode
`
\"
=
\other
\catcode
`
\_
=
\other
\catcode
`
\|
=
\other
\catcode
`
\<
=
\other
\catcode
`
\>
=
\other
\catcode
`
\$
=
\other
\catcode
`
\#
=
\other
\catcode
`
\&
=
\other
\catcode
`
\%
=
\other
\catcode
`+=
\other
% avoid \+ for paranoia even though we've turned it off
%
% This is to support \ in node names and titles, since the \
% characters end up in a \csname. It's easier than
% leaving it active and making its active definition an actual \
% character. What I don't understand is why it works in the *value*
% of the xrdef. Seems like it should be a catcode12 \, and that
% should not typeset properly. But it works, so I'm moving on for
% now. --karl, 15jan04.
\catcode
`
\\
=
\other
%
% Make the characters 128-255 be printing characters.
{
%
\count
1=128
\def\loop
{
%
\catcode\count
1=
\other
\advance\count
1 by 1
\ifnum
\count
1<256
\loop
\fi
}
%
}
%
%
% @ is our escape character in .aux files, and we need braces.
\catcode
`
\{
=1
\catcode
`
\}
=2
\catcode
`
\@
=0
}
\def\readdatafile
#1
{
%
\begingroup
\setupdatafile
\input\jobname
.#1
\endgroup
}
\message
{
insertions,
}
% including footnotes.
\newcount
\footnoteno
% The trailing space in the following definition for supereject is
% vital for proper filling; pages come out unaligned when you do a
% pagealignmacro call if that space before the closing brace is
% removed. (Generally, numeric constants should always be followed by a
% space to prevent strange expansion errors.)
\def\supereject
{
\par\penalty
-20000
\footnoteno
=0
}
% @footnotestyle is meaningful for info output only.
\let\footnotestyle
=
\comment
{
\catcode
`
\@
=11
%
% Auto-number footnotes. Otherwise like plain.
\gdef\footnote
{
%
\let\indent
=
\ptexindent
\let\noindent
=
\ptexnoindent
\global\advance\footnoteno
by
\@
ne
\edef\thisfootno
{
$
^{
\the\footnoteno
}
$
}
%
%
% In case the footnote comes at the end of a sentence, preserve the
% extra spacing after we do the footnote number.
\let\@
sf
\empty
\ifhmode\edef\@
sf
{
\spacefactor\the\spacefactor
}
\ptexslash\fi
%
% Remove inadvertent blank space before typesetting the footnote number.
\unskip
\thisfootno\@
sf
\dofootnote
}
%
% Don't bother with the trickery in plain.tex to not require the
% footnote text as a parameter. Our footnotes don't need to be so general.
%
% Oh yes, they do; otherwise, @ifset (and anything else that uses
% \parseargline) fails inside footnotes because the tokens are fixed when
% the footnote is read. --karl, 16nov96.
%
\gdef\dofootnote
{
%
\insert\footins\bgroup
% We want to typeset this text as a normal paragraph, even if the
% footnote reference occurs in (for example) a display environment.
% So reset some parameters.
\hsize
=
\pagewidth
\interlinepenalty\interfootnotelinepenalty
\splittopskip\ht\strutbox
% top baseline for broken footnotes
\splitmaxdepth\dp\strutbox
\floatingpenalty\@
MM
\leftskip\z
@skip
\rightskip\z
@skip
\spaceskip\z
@skip
\xspaceskip\z
@skip
\parindent\defaultparindent
%
\smallfonts
\rm
%
% Because we use hanging indentation in footnotes, a @noindent appears
% to exdent this text, so make it be a no-op. makeinfo does not use
% hanging indentation so @noindent can still be needed within footnote
% text after an @example or the like (not that this is good style).
\let\noindent
=
\relax
%
% Hang the footnote text off the number. Use \everypar in case the
% footnote extends for more than one paragraph.
\everypar
=
{
\hang
}
%
\textindent
{
\thisfootno
}
%
%
% Don't crash into the line above the footnote text. Since this
% expands into a box, it must come within the paragraph, lest it
% provide a place where TeX can split the footnote.
\footstrut
\futurelet\next\fo
@t
}
}
%end \catcode `\@=11
% In case a @footnote appears in a vbox, save the footnote text and create
% the real \insert just after the vbox finished. Otherwise, the insertion
% would be lost.
% Similarily, if a @footnote appears inside an alignment, save the footnote
% text to a box and make the \insert when a row of the table is finished.
% And the same can be done for other insert classes. --kasal, 16nov03.
% Replace the \insert primitive by a cheating macro.
% Deeper inside, just make sure that the saved insertions are not spilled
% out prematurely.
%
\def\startsavinginserts
{
%
\ifx
\insert\ptexinsert
\let\insert\saveinsert
\else
\let\checkinserts\relax
\fi
}
% This \insert replacement works for both \insert\footins{foo} and
% \insert\footins\bgroup foo\egroup, but it doesn't work for \insert27{foo}.
%
\def\saveinsert
#1
{
%
\edef\next
{
\noexpand\savetobox
\makeSAVEname
#1
}
%
\afterassignment\next
% swallow the left brace
\let\temp
=
}
\def\makeSAVEname
#1
{
\makecsname
{
SAVE
\expandafter\gobble\string
#1
}}
\def\savetobox
#1
{
\global\setbox
#1 =
\vbox\bgroup
\unvbox
#1
}
\def\checksaveins
#1
{
\ifvoid
#1
\else
\placesaveins
#1
\fi
}
\def\placesaveins
#1
{
%
\ptexinsert
\csname\expandafter\gobblesave\string
#1
\endcsname
{
\box
#1
}
%
}
% eat @SAVE -- beware, all of them have catcode \other:
{
\def\dospecials
{
\do
S
\do
A
\do
V
\do
E
}
\uncatcodespecials
% ;-)
\gdef\gobblesave
@SAVE
{}
}
% initialization:
\def\newsaveins
#1
{
%
\edef\next
{
\noexpand\newsaveinsX
\makeSAVEname
#1
}
%
\next
}
\def\newsaveinsX
#1
{
%
\csname
newbox
\endcsname
#1
%
\expandafter\def\expandafter\checkinserts\expandafter
{
\checkinserts
\checksaveins
#1
}
%
}
% initialize:
\let\checkinserts\empty
\newsaveins\footins
\newsaveins\margin
% @image. We use the macros from epsf.tex to support this.
% If epsf.tex is not installed and @image is used, we complain.
%
% Check for and read epsf.tex up front. If we read it only at @image
% time, we might be inside a group, and then its definitions would get
% undone and the next image would fail.
\openin
1 = epsf.tex
\ifeof
1
\else
% Do not bother showing banner with epsf.tex v2.7k (available in
% doc/epsf.tex and on ctan).
\def\epsfannounce
{
\toks
0 =
}
%
\input
epsf.tex
\fi
\closein
1
%
% We will only complain once about lack of epsf.tex.
\newif\ifwarnednoepsf
\newhelp\noepsfhelp
{
epsf.tex must be installed for images to
work. It is also included in the Texinfo distribution, or you can get
it from ftp://tug.org/tex/epsf.tex.
}
%
\def\image
#1
{
%
\ifx\epsfbox\undefined
\ifwarnednoepsf
\else
\errhelp
=
\noepsfhelp
\errmessage
{
epsf.tex not found, images will be ignored
}
%
\global\warnednoepsftrue
\fi
\else
\imagexxx
#1,,,,,
\finish
\fi
}
%
% Arguments to @image:
% #1 is (mandatory) image filename; we tack on .eps extension.
% #2 is (optional) width, #3 is (optional) height.
% #4 is (ignored optional) html alt text.
% #5 is (ignored optional) extension.
% #6 is just the usual extra ignored arg for parsing this stuff.
\newif\ifimagevmode
\def\imagexxx
#1,#2,#3,#4,#5,#6
\finish
{
\begingroup
\catcode
`
\^
^
M = 5
% in case we're inside an example
\normalturnoffactive
% allow _ et al. in names
% If the image is by itself, center it.
\ifvmode
\imagevmodetrue
\nobreak\bigskip
% Usually we'll have text after the image which will insert
% \parskip glue, so insert it here too to equalize the space
% above and below.
\nobreak\vskip\parskip
\nobreak
\line\bgroup
\fi
%
% Output the image.
\ifpdf
\dopdfimage
{
#1
}{
#2
}{
#3
}
%
\else
% \epsfbox itself resets \epsf?size at each figure.
\setbox
0 =
\hbox
{
\ignorespaces
#2
}
\ifdim\wd
0 > 0pt
\epsfxsize
=#2
\relax
\fi
\setbox
0 =
\hbox
{
\ignorespaces
#3
}
\ifdim\wd
0 > 0pt
\epsfysize
=#3
\relax
\fi
\epsfbox
{
#1.eps
}
%
\fi
%
\ifimagevmode
\egroup
\bigbreak
\fi
% space after the image
\endgroup
}
% @float FLOATTYPE,LABEL,LOC ... @end float for displayed figures, tables,
% etc. We don't actually implement floating yet, we always include the
% float "here". But it seemed the best name for the future.
%
\envparseargdef\float
{
\eatcommaspace\eatcommaspace\dofloat
#1, , ,
\finish
}
% There may be a space before second and/or third parameter; delete it.
\def\eatcommaspace
#1,
{
#1,
}
% #1 is the optional FLOATTYPE, the text label for this float, typically
% "Figure", "Table", "Example", etc. Can't contain commas. If omitted,
% this float will not be numbered and cannot be referred to.
%
% #2 is the optional xref label. Also must be present for the float to
% be referable.
%
% #3 is the optional positioning argument; for now, it is ignored. It
% will somehow specify the positions allowed to float to (here, top, bottom).
%
% We keep a separate counter for each FLOATTYPE, which we reset at each
% chapter-level command.
\let\resetallfloatnos
=
\empty
%
\def\dofloat
#1,#2,#3,#4
\finish
{
%
\let\thiscaption
=
\empty
\let\thisshortcaption
=
\empty
%
% don't lose footnotes inside @float.
%
% BEWARE: when the floats start float, we have to issue warning whenever an
% insert appears inside a float which could possibly float. --kasal, 26may04
%
\startsavinginserts
%
% We can't be used inside a paragraph.
\par
%
\vtop\bgroup
\def\floattype
{
#1
}
%
\def\floatlabel
{
#2
}
%
\def\floatloc
{
#3
}
% we do nothing with this yet.
%
\ifx\floattype\empty
\let\safefloattype
=
\empty
\else
{
%
% the floattype might have accents or other special characters,
% but we need to use it in a control sequence name.
\indexnofonts
\turnoffactive
\xdef\safefloattype
{
\floattype
}
%
}
%
\fi
%
% If label is given but no type, we handle that as the empty type.
\ifx\floatlabel\empty
\else
% We want each FLOATTYPE to be numbered separately (Figure 1,
% Table 1, Figure 2, ...). (And if no label, no number.)
%
\expandafter\getfloatno\csname\safefloattype
floatno
\endcsname
\global\advance\floatno
by 1
%
{
%
% This magic value for \thissection is output by \setref as the
% XREFLABEL-title value. \xrefX uses it to distinguish float
% labels (which have a completely different output format) from
% node and anchor labels. And \xrdef uses it to construct the
% lists of floats.
%
\edef\thissection
{
\floatmagic
=
\safefloattype
}
%
\setref
{
\floatlabel
}{
Yfloat
}
%
}
%
\fi
%
% start with \parskip glue, I guess.
\vskip\parskip
%
% Don't suppress indentation if a float happens to start a section.
\restorefirstparagraphindent
}
% we have these possibilities:
% @float Foo,lbl & @caption{Cap}: Foo 1.1: Cap
% @float Foo,lbl & no caption: Foo 1.1
% @float Foo & @caption{Cap}: Foo: Cap
% @float Foo & no caption: Foo
% @float ,lbl & Caption{Cap}: 1.1: Cap
% @float ,lbl & no caption: 1.1
% @float & @caption{Cap}: Cap
% @float & no caption:
%
\def\Efloat
{
%
\let\floatident
=
\empty
%
% In all cases, if we have a float type, it comes first.
\ifx\floattype\empty
\else
\def\floatident
{
\floattype
}
\fi
%
% If we have an xref label, the number comes next.
\ifx\floatlabel\empty
\else
\ifx\floattype\empty
\else
% if also had float type, need tie first.
\appendtomacro\floatident
{
\tie
}
%
\fi
% the number.
\appendtomacro\floatident
{
\chaplevelprefix\the\floatno
}
%
\fi
%
% Start the printed caption with what we've constructed in
% \floatident, but keep it separate; we need \floatident again.
\let\captionline
=
\floatident
%
\ifx\thiscaption\empty
\else
\ifx\floatident\empty
\else
\appendtomacro\captionline
{
:
}
% had ident, so need a colon between
\fi
%
% caption text.
\appendtomacro\captionline
{
\scanexp\thiscaption
}
%
\fi
%
% If we have anything to print, print it, with space before.
% Eventually this needs to become an \insert.
\ifx\captionline\empty
\else
\vskip
.5
\parskip
\captionline
%
% Space below caption.
\vskip\parskip
\fi
%
% If have an xref label, write the list of floats info. Do this
% after the caption, to avoid chance of it being a breakpoint.
\ifx\floatlabel\empty
\else
% Write the text that goes in the lof to the aux file as
% \floatlabel-lof. Besides \floatident, we include the short
% caption if specified, else the full caption if specified, else nothing.
{
%
\atdummies
%
% since we read the caption text in the macro world, where ^^M
% is turned into a normal character, we have to scan it back, so
% we don't write the literal three characters "^^M" into the aux file.
\scanexp
{
%
\xdef\noexpand\gtemp
{
%
\ifx\thisshortcaption\empty
\thiscaption
\else
\thisshortcaption
\fi
}
%
}
%
\immediate\write\auxfile
{
@xrdef
{
\floatlabel
-lof
}{
\floatident
\ifx\gtemp\empty
\else
:
\gtemp
\fi
}}
%
}
%
\fi
\egroup
% end of \vtop
%
% place the captured inserts
%
% BEWARE: when the floats start floating, we have to issue warning
% whenever an insert appears inside a float which could possibly
% float. --kasal, 26may04
%
\checkinserts
}
% Append the tokens #2 to the definition of macro #1, not expanding either.
%
\def\appendtomacro
#1#2
{
%
\expandafter\def\expandafter
#1
\expandafter
{
#1#2
}
%
}
% @caption, @shortcaption
%
\def\caption
{
\docaption\thiscaption
}
\def\shortcaption
{
\docaption\thisshortcaption
}
\def\docaption
{
\checkenv\float
\bgroup\scanargctxt\defcaption
}
\def\defcaption
#1#2
{
\egroup
\def
#1
{
#2
}}
% The parameter is the control sequence identifying the counter we are
% going to use. Create it if it doesn't exist and assign it to \floatno.
\def\getfloatno
#1
{
%
\ifx
#1
\relax
% Haven't seen this figure type before.
\csname
newcount
\endcsname
#1
%
%
% Remember to reset this floatno at the next chap.
\expandafter\gdef\expandafter\resetallfloatnos
\expandafter
{
\resetallfloatnos
#1=0
}
%
\fi
\let\floatno
#1
%
}
% \setref calls this to get the XREFLABEL-snt value. We want an @xref
% to the FLOATLABEL to expand to "Figure 3.1". We call \setref when we
% first read the @float command.
%
\def\Yfloat
{
\floattype
@tie
\chaplevelprefix\the\floatno
}
%
% Magic string used for the XREFLABEL-title value, so \xrefX can
% distinguish floats from other xref types.
\def\floatmagic
{
!!float!!
}
% #1 is the control sequence we are passed; we expand into a conditional
% which is true if #1 represents a float ref. That is, the magic
% \thissection value which we \setref above.
%
\def\iffloat
#1
{
\expandafter\doiffloat
#1==
\finish
}
%
% #1 is (maybe) the \floatmagic string. If so, #2 will be the
% (safe) float type for this float. We set \iffloattype to #2.
%
\def\doiffloat
#1=#2=#3
\finish
{
%
\def\temp
{
#1
}
%
\def\iffloattype
{
#2
}
%
\ifx\temp\floatmagic
}
% @listoffloats FLOATTYPE - print a list of floats like a table of contents.
%
\parseargdef\listoffloats
{
%
\def\floattype
{
#1
}
% floattype
{
%
% the floattype might have accents or other special characters,
% but we need to use it in a control sequence name.
\indexnofonts
\turnoffactive
\xdef\safefloattype
{
\floattype
}
%
}
%
%
% \xrdef saves the floats as a \do-list in \floatlistSAFEFLOATTYPE.
\expandafter\ifx\csname
floatlist
\safefloattype\endcsname
\relax
\ifhavexrefs
% if the user said @listoffloats foo but never @float foo.
\message
{
\linenumber
No `
\safefloattype
' floats to list.
}
%
\fi
\else
\begingroup
\leftskip
=
\tocindent
% indent these entries like a toc
\let\do
=
\listoffloatsdo
\csname
floatlist
\safefloattype\endcsname
\endgroup
\fi
}
% This is called on each entry in a list of floats. We're passed the
% xref label, in the form LABEL-title, which is how we save it in the
% aux file. We strip off the -title and look up \XRLABEL-lof, which
% has the text we're supposed to typeset here.
%
% Figures without xref labels will not be included in the list (since
% they won't appear in the aux file).
%
\def\listoffloatsdo
#1
{
\listoffloatsdoentry
#1
\finish
}
\def\listoffloatsdoentry
#1-title
\finish
{{
%
% Can't fully expand XR#1-lof because it can contain anything. Just
% pass the control sequence. On the other hand, XR#1-pg is just the
% page number, and we want to fully expand that so we can get a link
% in pdf output.
\toksA
=
\expandafter
{
\csname
XR#1-lof
\endcsname
}
%
%
% use the same \entry macro we use to generate the TOC and index.
\edef\writeentry
{
\noexpand\entry
{
\the\toksA
}{
\csname
XR#1-pg
\endcsname
}}
%
\writeentry
}}
\message
{
localization,
}
% and i18n.
% @documentlanguage is usually given very early, just after
% @setfilename. If done too late, it may not override everything
% properly. Single argument is the language abbreviation.
% It would be nice if we could set up a hyphenation file here.
%
\parseargdef\documentlanguage
{
%
\tex
% read txi-??.tex file in plain TeX.
% Read the file if it exists.
\openin
1 txi-#1.tex
\ifeof
1
\errhelp
=
\nolanghelp
\errmessage
{
Cannot read language file txi-#1.tex
}
%
\else
\input
txi-#1.tex
\fi
\closein
1
\endgroup
}
\newhelp\nolanghelp
{
The given language definition file cannot be found or
is empty. Maybe you need to install it? In the current directory
should work if nowhere else does.
}
% @documentencoding should change something in TeX eventually, most
% likely, but for now just recognize it.
\let\documentencoding
=
\comment
% Page size parameters.
%
\newdimen\defaultparindent
\defaultparindent
= 15pt
\chapheadingskip
= 15pt plus 4pt minus 2pt
\secheadingskip
= 12pt plus 3pt minus 2pt
\subsecheadingskip
= 9pt plus 2pt minus 2pt
% Prevent underfull vbox error messages.
\vbadness
= 10000
% Don't be so finicky about underfull hboxes, either.
\hbadness
= 2000
% Following George Bush, just get rid of widows and orphans.
\widowpenalty
=10000
\clubpenalty
=10000
% Use TeX 3.0's \emergencystretch to help line breaking, but if we're
% using an old version of TeX, don't do anything. We want the amount of
% stretch added to depend on the line length, hence the dependence on
% \hsize. We call this whenever the paper size is set.
%
\def\setemergencystretch
{
%
\ifx\emergencystretch\thisisundefined
% Allow us to assign to \emergencystretch anyway.
\def\emergencystretch
{
\dimen
0
}
%
\else
\emergencystretch
= .15
\hsize
\fi
}
% Parameters in order: 1) textheight; 2) textwidth;
% 3) voffset; 4) hoffset; 5) binding offset; 6) topskip;
% 7) physical page height; 8) physical page width.
%
% We also call \setleading{\textleading}, so the caller should define
% \textleading. The caller should also set \parskip.
%
\def\internalpagesizes
#1#2#3#4#5#6#7#8
{
%
\voffset
= #3
\relax
\topskip
= #6
\relax
\splittopskip
=
\topskip
%
\vsize
= #1
\relax
\advance\vsize
by
\topskip
\outervsize
=
\vsize
\advance\outervsize
by 2
\topandbottommargin
\pageheight
=
\vsize
%
\hsize
= #2
\relax
\outerhsize
=
\hsize
\advance\outerhsize
by 0.5in
\pagewidth
=
\hsize
%
\normaloffset
= #4
\relax
\bindingoffset
= #5
\relax
%
\ifpdf
\pdfpageheight
#7
\relax
\pdfpagewidth
#8
\relax
\fi
%
\setleading
{
\textleading
}
%
\parindent
=
\defaultparindent
\setemergencystretch
}
% @letterpaper (the default).
\def\letterpaper
{{
\globaldefs
= 1
\parskip
= 3pt plus 2pt minus 1pt
\textleading
= 13.2pt
%
% If page is nothing but text, make it come out even.
\internalpagesizes
{
46
\baselineskip
}{
6in
}
%
{
\voffset
}{
.25in
}
%
{
\bindingoffset
}{
36pt
}
%
{
11in
}{
8.5in
}
%
}}
% Use @smallbook to reset parameters for 7x9.25 trim size.
\def\smallbook
{{
\globaldefs
= 1
\parskip
= 2pt plus 1pt
\textleading
= 12pt
%
\internalpagesizes
{
7.5in
}{
5in
}
%
{
\voffset
}{
.25in
}
%
{
\bindingoffset
}{
16pt
}
%
{
9.25in
}{
7in
}
%
%
\lispnarrowing
= 0.3in
\tolerance
= 700
\hfuzz
= 1pt
\contentsrightmargin
= 0pt
\defbodyindent
= .5cm
}}
% Use @smallerbook to reset parameters for 6x9 trim size.
% (Just testing, parameters still in flux.)
\def\smallerbook
{{
\globaldefs
= 1
\parskip
= 1.5pt plus 1pt
\textleading
= 12pt
%
\internalpagesizes
{
7.4in
}{
4.8in
}
%
{
-.2in
}{
-.4in
}
%
{
0pt
}{
14pt
}
%
{
9in
}{
6in
}
%
%
\lispnarrowing
= 0.25in
\tolerance
= 700
\hfuzz
= 1pt
\contentsrightmargin
= 0pt
\defbodyindent
= .4cm
}}
% Use @afourpaper to print on European A4 paper.
\def\afourpaper
{{
\globaldefs
= 1
\parskip
= 3pt plus 2pt minus 1pt
\textleading
= 13.2pt
%
% Double-side printing via postscript on Laserjet 4050
% prints double-sided nicely when \bindingoffset=10mm and \hoffset=-6mm.
% To change the settings for a different printer or situation, adjust
% \normaloffset until the front-side and back-side texts align. Then
% do the same for \bindingoffset. You can set these for testing in
% your texinfo source file like this:
% @tex
% \global\normaloffset = -6mm
% \global\bindingoffset = 10mm
% @end tex
\internalpagesizes
{
51
\baselineskip
}{
160mm
}
{
\voffset
}{
\hoffset
}
%
{
\bindingoffset
}{
44pt
}
%
{
297mm
}{
210mm
}
%
%
\tolerance
= 700
\hfuzz
= 1pt
\contentsrightmargin
= 0pt
\defbodyindent
= 5mm
}}
% Use @afivepaper to print on European A5 paper.
% From romildo@urano.iceb.ufop.br, 2 July 2000.
% He also recommends making @example and @lisp be small.
\def\afivepaper
{{
\globaldefs
= 1
\parskip
= 2pt plus 1pt minus 0.1pt
\textleading
= 12.5pt
%
\internalpagesizes
{
160mm
}{
120mm
}
%
{
\voffset
}{
\hoffset
}
%
{
\bindingoffset
}{
8pt
}
%
{
210mm
}{
148mm
}
%
%
\lispnarrowing
= 0.2in
\tolerance
= 800
\hfuzz
= 1.2pt
\contentsrightmargin
= 0pt
\defbodyindent
= 2mm
\tableindent
= 12mm
}}
% A specific text layout, 24x15cm overall, intended for A4 paper.
\def\afourlatex
{{
\globaldefs
= 1
\afourpaper
\internalpagesizes
{
237mm
}{
150mm
}
%
{
\voffset
}{
4.6mm
}
%
{
\bindingoffset
}{
7mm
}
%
{
297mm
}{
210mm
}
%
%
% Must explicitly reset to 0 because we call \afourpaper.
\globaldefs
= 0
}}
% Use @afourwide to print on A4 paper in landscape format.
\def\afourwide
{{
\globaldefs
= 1
\afourpaper
\internalpagesizes
{
241mm
}{
165mm
}
%
{
\voffset
}{
-2.95mm
}
%
{
\bindingoffset
}{
7mm
}
%
{
297mm
}{
210mm
}
%
\globaldefs
= 0
}}
% @pagesizes TEXTHEIGHT[,TEXTWIDTH]
% Perhaps we should allow setting the margins, \topskip, \parskip,
% and/or leading, also. Or perhaps we should compute them somehow.
%
\parseargdef\pagesizes
{
\pagesizesyyy
#1,,
\finish
}
\def\pagesizesyyy
#1,#2,#3
\finish
{{
%
\setbox
0 =
\hbox
{
\ignorespaces
#2
}
\ifdim\wd
0 > 0pt
\hsize
=#2
\relax
\fi
\globaldefs
= 1
%
\parskip
= 3pt plus 2pt minus 1pt
\setleading
{
\textleading
}
%
%
\dimen
0 = #1
\advance\dimen
0 by
\voffset
%
\dimen
2 =
\hsize
\advance\dimen
2 by
\normaloffset
%
\internalpagesizes
{
#1
}{
\hsize
}
%
{
\voffset
}{
\normaloffset
}
%
{
\bindingoffset
}{
44pt
}
%
{
\dimen
0
}{
\dimen
2
}
%
}}
% Set default to letter.
%
\letterpaper
\message
{
and turning on texinfo input format.
}
% Define macros to output various characters with catcode for normal text.
\catcode
`
\"
=
\other
\catcode
`
\~
=
\other
\catcode
`
\^
=
\other
\catcode
`
\_
=
\other
\catcode
`
\|
=
\other
\catcode
`
\<
=
\other
\catcode
`
\>
=
\other
\catcode
`
\+
=
\other
\catcode
`
\$
=
\other
\def\normaldoublequote
{
"
}
\def\normaltilde
{
~
}
\def\normalcaret
{^}
\def\normalunderscore
{_}
\def\normalverticalbar
{
|
}
\def\normalless
{
<
}
\def\normalgreater
{
>
}
\def\normalplus
{
+
}
\def\normaldollar
{
$
}
%$ font-lock fix
% This macro is used to make a character print one way in \tt
% (where it can probably be output as-is), and another way in other fonts,
% where something hairier probably needs to be done.
%
% #1 is what to print if we are indeed using \tt; #2 is what to print
% otherwise. Since all the Computer Modern typewriter fonts have zero
% interword stretch (and shrink), and it is reasonable to expect all
% typewriter fonts to have this, we can check that font parameter.
%
\def\ifusingtt
#
1
#
2
{
\ifdim
\fontdimen
3
\font
=
0
pt #
1
\else
#
2
\fi
}
% Same as above, but check for italic font. Actually this also catches
% non-italic slanted fonts since it is impossible to distinguish them from
% italic fonts. But since this is only used by $ and it uses \sl anyway
% this is not a problem.
\def\ifusingit
#
1
#
2
{
\ifdim
\fontdimen
1
\font
>
0
pt #
1
\else
#
2
\fi
}
% Turn off all special characters except @
% (and those which the user can use as if they were ordinary).
% Most of these we simply print from the \tt font, but for some, we can
% use math or other variants that look better in normal text.
\catcode
`
\"
=
\active
\def\activedoublequote
{{
\tt\char
34
}}
\let
"
=
\activedoublequote
\catcode
`
\~
=
\active
\def
~{{
\tt\char
126
}}
\chardef\hat
=
`
\^
\catcode
`
\^
=
\active
\def
^{{
\tt
\hat
}}
\catcode
`
\_
=
\active
\def
_{
\ifusingtt\normalunderscore\_
}
\let\realunder
=
_
% Subroutine for the previous macro.
\def\_
{
\leavevmode
\kern
.
07
em
\vbox
{
\hrule
width.
3
em height.
1
ex}
\kern
.
07
em }
\catcode
`
\|
=
\active
\def
|{{
\tt\char
124
}}
\chardef
\less
=
`
\<
\catcode
`
\<
=
\active
\def
<{{
\tt
\less
}}
\chardef
\gtr
=
`
\>
\catcode
`
\>
=
\active
\def
>{{
\tt
\gtr
}}
\catcode
`
\+
=
\active
\def
+
{{
\tt
\char
43
}}
\catcode
`
\$
=
\active
\def
$
{
\ifusingit
{{
\sl\$
}}
\normaldollar
}
%$ font-lock fix
% If a .fmt file is being used, characters that might appear in a file
% name cannot be active until we have parsed the command line.
% So turn them off again, and have \everyjob (or @setfilename) turn them on.
% \otherifyactive is called near the end of this file.
\def\otherifyactive
{
\catcode
`+=
\other
\catcode
`
\_
=
\other
}
% Used sometimes to turn off (effectively) the active characters even after
% parsing them.
\def\turnoffactive
{
%
\normalturnoffactive
\otherbackslash
}
\catcode
`
\@
=0
% \backslashcurfont outputs one backslash character in current font,
% as in \char`\\.
\global\chardef\backslashcurfont
=`
\\
\global\let\rawbackslashxx
=
\backslashcurfont
% let existing .??s files work
% \realbackslash is an actual character `\' with catcode other, and
% \doublebackslash is two of them (for the pdf outlines).
{
\catcode
`
\\
=
\other
@gdef@realbackslash
{
\}
@gdef@doublebackslash
{
\\
}}
% In texinfo, backslash is an active character; it prints the backslash
% in fixed width font.
\catcode
`
\\
=
\active
@def@normalbackslash
{{
@tt@backslashcurfont
}}
% On startup, @fixbackslash assigns:
% @let \ = @normalbackslash
% \rawbackslash defines an active \ to do \backslashcurfont.
% \otherbackslash defines an active \ to be a literal `\' character with
% catcode other.
@gdef@rawbackslash
{
@let
\=
@backslashcurfont
}
@gdef@otherbackslash
{
@let
\=
@realbackslash
}
% Same as @turnoffactive except outputs \ as {\tt\char`\\} instead of
% the literal character `\'.
%
@def@normalturnoffactive
{
%
@let
\=
@normalbackslash
@let"=@normaldoublequote
@let~=@normaltilde
@let
^
=@normalcaret
@let
_
=@normalunderscore
@let|=@normalverticalbar
@let<=@normalless
@let>=@normalgreater
@let+=@normalplus
@let
$
=
@normaldollar
%$ font-lock fix
@unsepspaces
}
% Make _ and + \other characters, temporarily.
% This is canceled by @fixbackslash.
@otherifyactive
% If a .fmt file is being used, we don't want the `\input texinfo' to show up.
% That is what \eatinput is for; after that, the `\' should revert to printing
% a backslash.
%
@gdef@eatinput input texinfo{@fixbackslash}
@global@let
\
=
@eatinput
% On the other hand, perhaps the file did not have a `\input texinfo'. Then
% the first `\' in the file would cause an error. This macro tries to fix
% that, assuming it is called before the first `\' could plausibly occur.
% Also turn back on active characters that might appear in the input
% file name, in case not using a pre-dumped format.
%
@gdef@fixbackslash{
%
@ifx
\@
eatinput @let
\
=
@normalbackslash @fi
@catcode`
+=
@active
@catcode`@_
=
@active
}
% Say @foo, not \foo, in error messages.
@escapechar
=
`@@
% These look ok in all fonts, so just make them not special.
@catcode`@&
=
@other
@catcode`@#
=
@other
@catcode`@
% = @other
@c Local variables:
@c eval:
(
add
-
hook 'write
-
file
-
hooks 'time
-
stamp
)
@c page
-
delimiter: "^
\\\\
message"
@c time
-
stamp
-
start: "def
\\\\
texinfoversion{"
@c time
-
stamp
-
format: "
%:y-%02m-%02d.%02H"
@c time
-
stamp
-
end: "}"
@c End:
@c vim:sw
=
2
:
@ignore
arch
-
tag: e
1
b
36
e
32
-
c
96
e
-
4135
-
a
41
a
-
0
b
2
efa
2
ea
115
@end ignore
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