GNU bug report logs - #64735
29.0.92; find invocations are ~15x slower because of ignores

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Message #347 received at 64735 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Dmitry Gutov <dmitry <at> gutov.dev>
Cc: luangruo <at> yahoo.com, sbaugh <at> janestreet.com, yantar92 <at> posteo.net,
 64735 <at> debbugs.gnu.org
Subject: Re: bug#64735: 29.0.92; find invocations are ~15x slower because of
 ignores
Date: Sun, 23 Jul 2023 14:18:22 +0300

> Date: Sun, 23 Jul 2023 13:46:30 +0300
> Cc: luangruo <at> yahoo.com, sbaugh <at> janestreet.com, yantar92 <at> posteo.net,
>  64735 <at> debbugs.gnu.org
> From: Dmitry Gutov <dmitry <at> gutov.dev>
> 
> On 23/07/2023 08:11, Eli Zaretskii wrote:
> > Even better: compute completion-regexp-list so that IGNOREs are
> > filtered by file-name-all-completions in the first place.
> 
> We don't have lookahead in Emacs regexps, so I'm not sure it's possible 
> to construct regexp that says "don't match entries A, B and C".

Well, maybe just having a way of telling file-name-all-completions to
negate the sense of completion-regexp-list would be enough to make
that happen?

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