Pushed changes for those libraries.

On a terminal, please invoke:
$ gpg-connect-agent UPDATESTARTUPTTY /bye

My use case is using Wine, like this:

• having different bindir (/usr/local/i686-w64-mingw32 and /usr/local/x86_64-w64-mingw32)
• but I was too lazy to have different configurations for 32-bit and 64-bit, but to have shared configuration with
  • PATH adding both of /usr/local/i686-w64-mingw32 and /usr/local/x86_64-w64-mingw32

Pushed to GnuPG master. Let us test. For my machine of Debian GNU/Linux, Wine emulation (Windows 32-bit, Windows 64-bit), make check goes all well.
After confirming the implementation, I'd like to put it into gpgrt.

The change rG60963d98cfd8: gpg: Detect already compressed data also when using a pipe. for T6332 introduce IOBUF_IOCTL_PEEK.

Implemented in rA9110945ce625: Implement timeout in assuan_sock_connect_byname..

Actually, it's not 'connect' system call, but 'CONNECT' request which matters. The use of SOCKS in libassuan is that it always connects to SOCKS server at localhost.
So, other than the special case of erroneous configuration of TOR, introducing timeout handling to the initial connection to the SOCKS server makes less sense.

The root cause might be that the "DEVINFO --watch" command causes ...

I see the point of use of int.
For backward compatibility, the semantics of 0 should remain as default timeout (let kernel decide == 120 sec, usually), -1 would be meaning immediately (only success when local).

Thank you for your report. Good catch.

The fix is in 2.4.1.
It's not perfect fix, but it catches the problem when it's not encrypted secret key.

assuan_sock_connect_byname may be extended to change the third argument (now int reserved) to unsigned int timeout.
It's a kind of API change, but ABI wise, the impact is minimum.

I learned that Unix build environment needs Wine emulation (with winepath) for MinGW host (when uninstalled executable should run correctly).
https://www.gnu.org/software/libtool/manual/html_node/File-name-conversion.html

Fixed for libgcrypt, updating copyright notices and license files.

@ikloecker Thanks for your comment. I put a comment in the commit.

So, here are fixes. I'll apply soonish.

Sorry, the comment above is my misunderstanding.

For importing key/subkey case, it doesn't matter if the smartcard is connected or not. The data in the file will be overwritten by import.

I understand the issue that you don't see an important message of the error.
Possibly, for this particular case, it would be changed to tty_printf instead.

What it does (in g10/card-util.c:card_store_subkey) is:

if (rc)
  log_error (_("KEYTOCARD failed: %s\n"), gpg_strerror (rc));

@jukivili Yes, please go ahead for both branches. Thank you.

I checked the upstream. For the reported issue, upstream version raises an error with REG_ERR_UNMATCHED_BRACKET.
That behavior is better (as we don't have particular reason to maintain different behavior from upstream version).
Also, I found another change from upstream for end of word check.

Pushed the change not including OK_TO_CHANGE_ERROR_BEHAVIOR part.
Note that the modification affects main key case, too.

To minimize the impact of the change, I updated:

diff --git a/g10/import.c b/g10/import.c
index 1ed40a63c..345e8cc75 100644
--- a/g10/import.c
+++ b/g10/import.c
@@ -2955,9 +2955,23 @@ do_transfer (ctrl_t ctrl, kbnode_t keyblock, PKT_public_key *pk,
 {
   gpg_error_t err;
   struct import_stats_s subkey_stats = {0};
+  int force = 0;
+  int already_exist = agent_probe_secret_key (ctrl, pk);
+
+#ifndef OK_TO_CHANGE_ERROR_BEHAVIOR
+  if (already_exist == 1)
+    return gpg_error (GPG_ERR_EEXIST);
+#endif
+  if (already_exist == 2)
+    {
+      if (!opt.quiet)
+        log_info (_("key %s: card reference is overridden by key material\n"),
+                  keystr_from_pk (pk));
+      force = 1;
+    }

Reading the commit rC5beadf201312: Add gcry_cipher_ctl command to allow weak keys in testing use-cases,
The test code in basic.c assumes that it is an application responsibility to confirm&ignore GPG_ERR_WEAK_KEY error when using GCRYCTL_SET_ALLOW_WEAK_KEY.

Changes may be something like:

diff --git a/g10/import.c b/g10/import.c
index 1ed40a63c..91ff0c8ec 100644
--- a/g10/import.c
+++ b/g10/import.c
@@ -2706,6 +2706,20 @@ transfer_secret_keys (ctrl_t ctrl, struct import_stats_s *stats,
           goto leave;
         }

Fixed by rGfcbb849c26e9: speedo: Fix regression due to switching from gcc 8.3 to 10.2 for zlib build.

Fixed in 1.10.2.

Fixed in 1.10.2.

Fixed in 1.10.2.

Fixed in 1.10.2.

Fixed in 1.10.2.

Fixed in 1.10.2.

Fixed in 1.10.2.

Fixed in 1.10.2.

Fixed in 1.10.2.

Fixed in 1.10.2.

Fixed in 1.10.2.

Fixed in 1.10.2.

Fixed in 1.10.2.

Fixed in 1.10.2.

Fixed in 1.10.2.

Fixed in 1.10.2.

Fixed in 1.10.2.