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From: Junio C Hamano <gitster@pobox.com>
To: Nguyen Thai Ngoc Duy <pclouds@gmail.com>
Cc: git@vger.kernel.org
Subject: Re: What's cooking in git.git (Oct 2012, #01; Tue, 2)
Date: Wed, 03 Oct 2012 23:01:04 -0700	[thread overview]
Message-ID: <7v626q3hen.fsf@alter.siamese.dyndns.org> (raw)
In-Reply-To: <CACsJy8CAGaEzGZBJq7pOW_2SDpRDLiPqJK0t2WjpuNqLU+yewQ@mail.gmail.com> (Nguyen Thai Ngoc Duy's message of "Thu, 4 Oct 2012 08:56:36 +0700")

Nguyen Thai Ngoc Duy <pclouds@gmail.com> writes:

>> I am guessing that the only sensible definition is that "**"
>> requires anything that comes before it (if exists) is at a proper
>> hierarchy boundary, and anything matches it is also at a proper
>> hierarchy boundary, so "x**y" matches "x/a/y"
>
> and "x/y" too? (As opposed to "x/**/y" which does not)

Yeah, x**y would match x/y under that "sensible" semantics.

>> and not "xy", "xay",
>> nor "xa/by" in the above example.  If "x**y" can match "xy" or "xay"
>> (or "**foo" can match "afoo"), it would be unreasonable to say it
>> implies the pattern is anchored at any level, no?
>
> Yeah. That makes things easier to reason, though not exactly what we're having.

It sounds like that "x**y" with the code you imported would match
"xy" and "xa/b/cy", and I do not think of a concise and good way to
describe what it does to the end users.

"matches anything including '/'" is not a useful description for the
purpose of allowing the user to intuitively understand why "x**y" is
anchored at the level (or is not anchored and can appear anywhere).

Perhaps the wildmatch code may not be what we want X-<.

  reply	other threads:[~2012-10-04 21:56 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-02 23:20 What's cooking in git.git (Oct 2012, #01; Tue, 2) Junio C Hamano
2012-10-03 15:23 ` Nguyen Thai Ngoc Duy
2012-10-03 18:17   ` Junio C Hamano
2012-10-04  1:56     ` Nguyen Thai Ngoc Duy
2012-10-04  6:01       ` Junio C Hamano [this message]
2012-10-04  7:39         ` [PATCH 0/6] wildmatch part 2 Nguyễn Thái Ngọc Duy
2012-10-04  7:39           ` [PATCH 1/6] attr: remove the union in struct match_attr Nguyễn Thái Ngọc Duy
2012-10-04  7:39           ` [PATCH 2/6] attr: avoid strlen() on every match Nguyễn Thái Ngọc Duy
2012-10-04  7:39           ` [PATCH 3/6] attr: avoid searching for basename " Nguyễn Thái Ngọc Duy
2012-10-04  7:39           ` [PATCH 4/6] attr: more matching optimizations from .gitignore Nguyễn Thái Ngọc Duy
2012-10-04  7:39           ` [PATCH 5/6] gitignore: do not do basename match with patterns that have '**' Nguyễn Thái Ngọc Duy
2012-10-04 17:59             ` Junio C Hamano
2012-10-05  7:01             ` Johannes Sixt
2012-10-05 11:23               ` Nguyen Thai Ngoc Duy
2012-10-04  7:39           ` [PATCH 6/6] t3001: note about expected "**" behavior Nguyễn Thái Ngọc Duy
2012-10-04 18:04             ` Junio C Hamano
2012-10-04 17:43           ` [PATCH 0/6] wildmatch part 2 Junio C Hamano
2012-10-04  9:34     ` What's cooking in git.git (Oct 2012, #01; Tue, 2) Michael Haggerty
2012-10-04 11:46       ` Nguyen Thai Ngoc Duy
2012-10-04 15:17         ` Michael Haggerty
2012-10-04 16:39       ` Junio C Hamano
2012-10-05 12:19         ` Andreas Schwab
2012-10-05 12:30           ` Matthieu Moy
2012-10-05 14:15             ` Andreas Schwab
2012-10-05 13:21         ` Nguyen Thai Ngoc Duy
2012-10-04  8:17 ` David Michael Barr
2012-10-04  8:30   ` fa/remote-svn (Re: What's cooking in git.git (Oct 2012, #01; Tue, 2)) Jonathan Nieder
2012-10-04 13:16     ` Stephen Bash
2012-10-04 16:30       ` Junio C Hamano
2012-10-04 16:27   ` What's cooking in git.git (Oct 2012, #01; Tue, 2) Junio C Hamano
2012-10-30 12:15 ` Florian Achleitner

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