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From: Diomidis Spinellis <dds@aueb.gr>
To: Eric Sunshine <sunshine@sunshineco.com>, Git List <git@vger.kernel.org>
Cc: "René Scharfe" <l.s.r@web.de>,
	"Junio C Hamano" <gitster@pobox.com>,
	demerphq <demerphq@gmail.com>,
	"Mario Grgic" <mario_grgic@hotmail.com>
Subject: Re: regex compilation error with --color-words
Date: Thu, 30 Mar 2023 10:55:00 +0300	[thread overview]
Message-ID: <b45bf46f-580a-870c-5293-10ecdf2e56d3@aueb.gr> (raw)
In-Reply-To: <CAPig+cSNmws2b7f7aRA2C56kvQYG3w_g+KhYdqhtmf+XhtAMhQ@mail.gmail.com>

On 30-Mar-23 1:55, Eric Sunshine wrote:
> I'm encountering a failure on macOS High Sierra 10.13.6 when using
> --color-words:

The built-in word separation regular expression pattern for the Perl 
language fails to work with the macOS regex engine.  The same also 
happens with the FreeBSD one (tested on 14.0).

The issue can be replicated through the following sequence of commands.

git init color-words
cd color-words
echo '*.pl   diff=perl' >.gitattributes
echo 'print 42;' >t.pl
git add t.pl
git commit -am Add
git show --color-words

Strangely, I haven't been able to reproduce the failure with egrep on 
any of the two platforms.

egrep 
'[[:alpha:]_'\''][[:alnum:]_'\'']*|0[xb]?[0-9a-fA-F_]*|[0-9a-fA-F_]+(\.[0-9a-fA-F_]+)?([eE][-+]?[0-9_]+)?|=>|-[rwxoRWXOezsfdlpSugkbctTBMAC>]|~~|::|&&=|\|\|=|//=|\*\*=|&&|\|\||//|\+\+|--|\*\*|\.\.\.?|[-+*/%.^&<>=!|]=|=~|!~|<<|<>|<=>|>>|[^[:space:]]|[\xc0-\xff][\x80-\xbf]+' 
/dev/null

  reply	other threads:[~2023-03-30  8:00 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-29 22:55 regex compilation error with --color-words Eric Sunshine
2023-03-30  7:55 ` Diomidis Spinellis [this message]
2023-03-31 20:44   ` René Scharfe
2023-04-02  9:44     ` René Scharfe
2023-04-03 16:29       ` Junio C Hamano
2023-04-03 19:32         ` René Scharfe
2023-04-06 20:19           ` [PATCH] userdiff: support regexec(3) with multi-byte support René Scharfe
2023-04-06 22:35             ` Johannes Sixt
2023-04-07  7:49               ` René Scharfe
2023-04-07 10:56                 ` Johannes Sixt
2023-04-07 14:41             ` D. Ben Knoble
2023-04-07 16:02               ` Junio C Hamano
2023-04-07 17:23             ` Eric Sunshine
  -- strict thread matches above, loose matches on Subject: below --
2023-04-06 13:39 regex compilation error with --color-words Benjamin
2023-04-06 16:03 Benjamin

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