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From: "Alfred M. Szmidt" <ams@gnu.org>
To: Dmitry Gutov <dmitry@gutov.dev>
Cc: 66211@debbugs.gnu.org
Subject: bug#66211: 30.0.50; C-x v v in vc-diff does not work with lesser versionf of patch
Date: Tue, 26 Sep 2023 08:43:32 -0400	[thread overview]
Message-ID: <E1ql7PY-0001Ku-Re@fencepost.gnu.org> (raw)
In-Reply-To: <3e17d007-0c22-918d-2030-89b02b081d44@gutov.dev> (message from Dmitry Gutov on Tue, 26 Sep 2023 15:38:52 +0300)

   > The C-x v v command in a*vc-diff*  buffer does not work if you have a
   > lesser version of patch, e.g., the one on OpenBSD:
   > 
   > user-error: Patch failed: patch: unknown option -- no-backup-if-mismatch
   > usage: patch [-bCcEeflNnRstuv] [-B backup-prefix] [-D symbol] [-d directory]
   >               [-F max-fuzz] [-i patchfile] [-o out-file] [-p strip-count]
   >               [-r rej-name] [-V t | nil | never] [-x number] [-z backup-ext]
   >               [--posix] [origfile [patchfile]]
   >         patch <patchfile

   Thanks for the report.

   Any idea how to implement the same thing using your version of 'patch'?

Maybe just pass --posix for both GNU patch and other patch?


From the GNU patch manual:

  The --no-backup-if-mismatch option causes patch to not create backup
  files, even for mismatched patches; this is the default when
  conforming to POSIX.

Scoundering the patch(1) man page:

     -b, --backup
             Save a backup copy of the file before it is modified.  By default
             the original file is saved with a backup extension of ".orig"
             unless the file already has a numbered backup, in which case a
             numbered backup is made.  This is equivalent to specifying "-V
             existing".  This option is currently the default, unless --posix
             is specified.

And looking further, --posix:

     --posix
             Enables strict IEEE Std 1003.1-2008 ("POSIX.1") conformance,
             specifically:

             1.   Backup files are not created unless the -b option is
                  specified.

             2.   If unspecified, the file name used is the first of the old,
                  new and index files that exists.






  reply	other threads:[~2023-09-26 12:43 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-26 12:17 bug#66211: 30.0.50; C-x v v in vc-diff does not work with lesser versionf of patch Alfred M. Szmidt
2023-09-26 12:38 ` Dmitry Gutov
2023-09-26 12:43   ` Alfred M. Szmidt [this message]
2023-09-26 13:38     ` Dmitry Gutov
2023-09-26 15:08       ` Alfred M. Szmidt
2023-09-26 16:30         ` Dmitry Gutov
2023-09-26 16:51           ` Alfred M. Szmidt
2023-10-07 22:33         ` Dmitry Gutov
2023-10-08  5:01           ` Eli Zaretskii
2023-10-14 17:10             ` Dmitry Gutov
2023-09-29  7:05 ` Eli Zaretskii
2023-09-29 10:22   ` Dmitry Gutov
2023-09-29 15:22     ` Eli Zaretskii
2023-09-29 17:27       ` Dmitry Gutov
2023-09-29 17:40         ` Eli Zaretskii
2023-09-29 18:11           ` Dmitry Gutov
2023-09-29 18:36         ` Alfred M. Szmidt

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