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From: Stavros Ntentos <stdedos@gmail.com>
To: git@vger.kernel.org
Cc: stdedos+git@gmail.com, gitster@pobox.com, bagasdotme@gmail.com,
	peff@peff.net
Subject: Re: [RFC PATCH v1 1/2] pathspec: warn: long and short forms are incompatible
Date: Sun, 28 Mar 2021 18:44:32 +0300	[thread overview]
Message-ID: <20210328154432.23434-1-133706+stdedos@users.noreply.github.com> (raw)
In-Reply-To: <xmqqa6qoqw9n.fsf@gitster.g>

Junio C Hamano <gitster@pobox.com> writes:
> Jeff King <peff@peff.net> writes:
>
> > It also feels like any checks like this should be relying on the
> > existing pathspec-magic parser a bit more. I don't know the pathspec
> > code that well, but surely at some point it has a notion of which parts
> > are magic flags (e.g., after parse_element_magic in init_pathspec_item).
>
> Absolutely.  parse_element_magic() decides, by looking at the
> character after the initial ':', the we are looking at the longhand
> form when magic sequence is introduced by ":(".

Absolutely from me too! I would want to re-use more of the existing code.
In response to that, patch
https://lore.kernel.org/git/20210328152629.16486-1-133706+stdedos@users.noreply.github.com/
clearly shows that it is possible to re-use the de-facto long form magic parsing
code to attempt to parse the string that continues as a long form magic.

This could theoretically pave the road for mixed short/long form parsing
(in that order), if would be so desired.

However, as probably suspected, it suffers from one big problem:
	if (ARRAY_SIZE(pathspec_magic) <= i)
		die(_("Invalid pathspec magic '%.*s' in '%s'"),
		    (int) len, pos, elem);

which is an unconditional `exit(128)`.

I don't know if it's possible to rescue (or redirect) that `die` call.
In any case, considering that, this again deviates from the
"small informative" change this commit was supposed to be.

Having said that, I have cooked a working patch with the proposed code.

  reply	other threads:[~2021-03-28 15:45 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-26 20:44 Pathspec does not accept / does not warn for specific pathspecs Σταύρος Ντέντος
2021-02-26 23:27 ` Junio C Hamano
2021-03-25 10:22   ` [PATCH v1 0/1] pathspec: warn for a no-glob entry that contains `**` Σταύρος Ντέντος
2021-03-25 10:22     ` [PATCH v1 1/1] " Σταύρος Ντέντος
2021-03-25 11:00       ` Bagas Sanjaya
2021-03-25 11:04       ` Bagas Sanjaya
2021-03-25 16:09         ` Stavros Ntentos
2021-03-25 20:09           ` Junio C Hamano
2021-03-25 23:36   ` [PATCH v2 0/1] " Σταύρος Ντέντος
2021-03-25 23:36   ` [PATCH v2 1/1] " Σταύρος Ντέντος
2021-03-26  0:41     ` Junio C Hamano
2021-03-26  1:32       ` Eric Sunshine
2021-03-26  3:02         ` Junio C Hamano
2021-03-26  5:13           ` Jeff King
2021-03-26 15:43             ` Stavros Ntentos
2021-03-26 15:48     ` [PATCH v3 1/2] " Stavros Ntentos
2021-03-26 15:48       ` [PATCH v3 2/2] pathspec: convert no-glob warn to advice Stavros Ntentos
2021-03-26  2:40   ` [RFC PATCH v1 0/1] pathspec: warn: long and short forms are incompatible Σταύρος Ντέντος
2021-03-26  2:40     ` [RFC PATCH v1 1/2] " Σταύρος Ντέντος
2021-03-26  5:28       ` Jeff King
2021-03-26 16:16         ` Stavros Ntentos
2021-03-27  9:41           ` Jeff King
2021-03-27 18:36             ` Junio C Hamano
2021-03-28 15:44               ` Stavros Ntentos [this message]
2021-03-26  2:40     ` [RFC PATCH v1 2/2] fixup! " Σταύρος Ντέντος
2021-03-26  8:14       ` Bagas Sanjaya
2021-03-26 15:55         ` Stavros Ntentos
2021-03-28 15:26       ` [RFC PATCH v1 3/3] squash! " Stavros Ntentos
2021-03-26  2:44   ` [RFC PATCH v1 0/1] " Σταύρος Ντέντος
2021-03-26  2:44     ` [RFC PATCH v1] " Σταύρος Ντέντος
2021-04-03 12:26     ` [PATCH v3] pathspec: advice: " Stavros Ntentos
2021-04-04  7:19       ` Junio C Hamano
2021-04-11 15:07         ` Σταύρος Ντέντος
2021-04-11 19:10           ` Junio C Hamano
2021-04-11 20:53             ` Σταύρος Ντέντος
2021-03-28 15:45   ` [PATCH v2] " Stavros Ntentos
2021-03-28 19:12     ` Junio C Hamano
2021-03-30 17:37       ` Junio C Hamano
2021-03-30 19:05       ` Stavros Ntentos
2021-03-30 19:17         ` Stavros Ntentos
2021-03-30 20:36         ` Junio C Hamano
2021-04-03 12:48   ` [PATCH v3] " Stavros Ntentos
2021-04-03 12:51   ` [PATCH v4] " Stavros Ntentos

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