* pinentry/pinentry-curses.c (DIALOG_POS_REPEAT_PIN): New.
(dialog_t): Separate members for repeat.
(dialog_create): Create passphrase repeat field.
(dialog_switch_pos): Handle DIALOG_POS_REPEAT_PIN.
(dialog_input): Modify to handle the repeat field.
(test_repeat): New.
(dialog_run): Skip OK when changing fields and passphrases do not match.