From: Junio C Hamano <gitster@pobox.com>
To: Ghanshyam Thakkar <shyamthakkar001@gmail.com>
Cc: git@vger.kernel.org, ps@pks.im
Subject: Re: [PATCH v2 2/2] add-patch: classify '@' as a synonym for 'HEAD'
Date: Fri, 02 Feb 2024 09:08:17 -0800 [thread overview]
Message-ID: <xmqqh6iqu73y.fsf@gitster.g> (raw)
In-Reply-To: <20240202150434.11256-3-shyamthakkar001@gmail.com> (Ghanshyam Thakkar's message of "Fri, 2 Feb 2024 20:33:50 +0530")
Ghanshyam Thakkar <shyamthakkar001@gmail.com> writes:
> Currently, (checkout, reset, restore) commands correctly take '@' as a
> synonym for 'HEAD'. However, in patch mode (-p/--patch), for both '@' and
> 'HEAD', different prompts/messages are given by the commands mentioned
> above. This is due to the literal and only string comparison with the word
> 'HEAD' in run_add_p(). Synonymity between '@' and 'HEAD' is obviously
> desired, especially since '@' already resolves to 'HEAD'.
>
> Therefore, make a new function user_meant_head() which takes the
> revision string and compares it to 'HEAD' as well as '@'. However, in
> builtin/checkout.c, there is some logic to convert all revs besides
> 'HEAD' to hex revs due to 'diff-index', which is used in patch mode
> machinery, not being able to handle '<a>...<b>' revs. Therefore, in
> addition to 'HEAD', do not convert '@' as well, so it can be later
> used in assigning patch_mode_(...)_head.
In this context <a>...<b> names a single rev (not two revs) that is
the merge base of <a> and <b>. Perhaps
... there is a logic to convert all command line input rev to
the raw object name for underlying machinery (e.g., diff-index)
that does not recognize the <a>...<b> notation, but we'd need to
leave "HEAD" intact. Now we need to teach that "@" is a synonym
to "HEAD" to that code, too.
which may be a bit shorter.
You decided to use is_rev_head() instead of user_meant_head(), so
you'd need to update the above description to match, I think.
> - if (rev && new_branch_info->commit && strcmp(rev, "HEAD"))
> + if (rev && new_branch_info->commit && strcmp(rev, "HEAD") &&
> + strcmp(rev, "@"))
Shouldn't this be
if (rev && new_branch_info->commit && !is_rev_head(rev))
instead of "HEAD" and "@" spelled out?
Other than the above, nicely done.
next prev parent reply other threads:[~2024-02-02 17:10 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-28 18:11 [GSOC][RFC PATCH 0/2] add-patch: compare object id Ghanshyam Thakkar
2024-01-28 18:11 ` [RFC PATCH 1/2] add-patch: compare object id instead of literal string Ghanshyam Thakkar
2024-01-29 11:48 ` Patrick Steinhardt
2024-01-30 6:39 ` Ghanshyam Thakkar
2024-01-30 16:42 ` Junio C Hamano
2024-01-29 18:27 ` Junio C Hamano
2024-01-29 18:58 ` Junio C Hamano
2024-01-30 5:35 ` Ghanshyam Thakkar
2024-01-28 18:11 ` [RFC PATCH 2/2] checkout: remove HEAD special case Ghanshyam Thakkar
2024-01-29 11:48 ` Patrick Steinhardt
2024-02-02 15:03 ` [PATCH v2 0/2] add-patch: Support '@' as a synonym for 'HEAD' Ghanshyam Thakkar
2024-02-02 15:03 ` [PATCH v2 1/2] add-patch: remove non-relevant NEEDSWORK comment Ghanshyam Thakkar
2024-02-02 15:03 ` [PATCH v2 2/2] add-patch: classify '@' as a synonym for 'HEAD' Ghanshyam Thakkar
2024-02-02 17:08 ` Junio C Hamano [this message]
2024-02-02 17:43 ` Junio C Hamano
2024-02-02 17:53 ` Ghanshyam Thakkar
2024-02-02 17:51 ` Ghanshyam Thakkar
2024-02-02 17:31 ` [PATCH v2 0/2] add-patch: Support " Ghanshyam Thakkar
2024-02-03 11:25 ` [PATCH v3 0/2] add-patch: " Ghanshyam Thakkar
2024-02-06 22:50 ` [PATCH v4 0/3] '@' as a synonym for 'HEAD' in patch mode Ghanshyam Thakkar
2024-02-11 20:20 ` [PATCH v5 0/2] add-patch: classify '@' as a synonym for 'HEAD' Ghanshyam Thakkar
2024-02-13 0:05 ` [PATCH v6 " Ghanshyam Thakkar
2024-02-14 11:06 ` Phillip Wood
2024-02-13 0:05 ` [PATCH v6 1/2] " Ghanshyam Thakkar
2024-02-13 0:05 ` [PATCH v6 2/2] add -p tests: remove PERL prerequisites Ghanshyam Thakkar
2024-02-11 20:20 ` [PATCH v5 1/2] add-patch: classify '@' as a synonym for 'HEAD' Ghanshyam Thakkar
2024-02-12 21:45 ` Junio C Hamano
2024-02-11 20:20 ` [PATCH v5 2/2] add -p tests: remove PERL prerequisites Ghanshyam Thakkar
2024-02-06 22:50 ` [PATCH v4 1/3] add-patch: remove unnecessary NEEDSWORK comment Ghanshyam Thakkar
2024-02-07 10:51 ` Phillip Wood
2024-02-06 22:50 ` [PATCH v4 2/3] add-patch: classify '@' as a synonym for 'HEAD' Ghanshyam Thakkar
2024-02-07 1:05 ` Junio C Hamano
2024-02-07 10:38 ` Phillip Wood
2024-02-09 15:57 ` Ghanshyam Thakkar
2024-02-06 22:50 ` [PATCH v4 3/3] add -p tests: remove Perl prerequisite Ghanshyam Thakkar
2024-02-07 10:50 ` Phillip Wood
2024-02-07 13:51 ` Phillip Wood
2024-02-07 16:02 ` Junio C Hamano
2024-02-07 16:58 ` Eric Sunshine
2024-02-03 11:25 ` [PATCH v3 1/2] add-patch: remove unnecessary NEEDSWORK comment Ghanshyam Thakkar
2024-02-03 11:25 ` [PATCH v3 2/2] add-patch: classify '@' as a synonym for 'HEAD' Ghanshyam Thakkar
2024-02-03 22:33 ` Junio C Hamano
2024-02-05 15:14 ` Ghanshyam Thakkar
2024-02-05 16:37 ` Phillip Wood
2024-02-05 20:38 ` Ghanshyam Thakkar
2024-02-05 23:07 ` Junio C Hamano
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