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author | Ghanshyam Thakkar <shyamthakkar001@gmail.com> | 2024-02-13 05:35:29 +0530 |
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committer | Junio C Hamano <gitster@pobox.com> | 2024-02-13 14:12:51 -0800 |
commit | 5a8ed3fe450caad740b1c236b3f14151f84bed05 (patch) | |
tree | 0a4667632a488c78b4f3c8ac2c6330d3ba1c3386 /add-patch.c | |
parent | 2a540e432fe5dff3cfa9d3bf7ca56db2ad12ebb9 (diff) | |
download | git-5a8ed3fe450caad740b1c236b3f14151f84bed05.tar.gz |
add-patch: classify '@' as a synonym for 'HEAD'
Currently, (restore, checkout, reset) commands correctly take '@' as a
synonym for 'HEAD'. However, in patch mode different prompts/messages
are given on command line due to patch mode machinery not considering
'@' to be a synonym for 'HEAD' due to literal string comparison with
the word 'HEAD', and therefore assigning patch_mode_($command)_nothead
and triggering reverse mode (-R in diff-index). The NEEDSWORK comment
suggested comparing commit objects to get around this. However, doing
so would also take a non-checked out branch pointing to the same commit
as HEAD, as HEAD. This would cause confusion to the user.
Therefore, after parsing '@', replace it with 'HEAD' as reasonably
early as possible. This also solves another problem of disparity
between 'git checkout HEAD' and 'git checkout @' (latter detaches at
the HEAD commit and the former does not).
Trade-offs:
- Some of the errors would show the revision argument as 'HEAD' when
given '@'. This should be fine, as most users who probably use '@'
would be aware that it is a shortcut for 'HEAD' and most probably
used to use 'HEAD'. There is also relevant documentation in
'gitrevisions' manpage about '@' being the shortcut for 'HEAD'. Also,
the simplicity of the solution far outweighs this cost.
- Consider '@' as a shortcut for 'HEAD' even if 'refs/heads/@' exists
at a different commit. Naming a branch '@' is an obvious foot-gun and
many existing commands already take '@' for 'HEAD' even if
'refs/heads/@' exists at a different commit or does not exist at all
(e.g. 'git log @', 'git push origin @' etc.). Therefore this is an
existing assumption and should not be a problem.
Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Phillip Wood <phillip.wood123@gmail.com>
Signed-off-by: Ghanshyam Thakkar <shyamthakkar001@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'add-patch.c')
-rw-r--r-- | add-patch.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/add-patch.c b/add-patch.c index 79eda168eb..68f525b35c 100644 --- a/add-patch.c +++ b/add-patch.c @@ -1729,14 +1729,6 @@ int run_add_p(struct repository *r, enum add_p_mode mode, if (mode == ADD_P_STASH) s.mode = &patch_mode_stash; else if (mode == ADD_P_RESET) { - /* - * NEEDSWORK: Instead of comparing to the literal "HEAD", - * compare the commit objects instead so that other ways of - * saying the same thing (such as "@") are also handled - * appropriately. - * - * This applies to the cases below too. - */ if (!revision || !strcmp(revision, "HEAD")) s.mode = &patch_mode_reset_head; else |