GNU bug report logs - #70794
30.0.50; Add Rust compilation regex

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Message #28 received at 70794 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Mattias Engdegård <mattias.engdegard <at> gmail.com>
Cc: 70794 <at> debbugs.gnu.org, spacibba <at> aol.com
Subject: Re: bug#70794: 30.0.50; Add Rust compilation regex
Date: Mon, 03 Jun 2024 18:28:38 +0300

> From: Mattias Engdegård <mattias.engdegard <at> gmail.com>
> Date: Mon, 3 Jun 2024 16:54:02 +0200
> Cc: Eli Zaretskii <eliz <at> gnu.org>,
>  70794 <at> debbugs.gnu.org
> 
> There is another problem with the added `cargo` regexp: its placement early in `compilation-error-regexp-alist-alist` causes it to match before other, possibly more frequently occurring patterns.
> (That is not your (or Eli's) fault but an undocumented subtlety of that variable; I'll add a remark to the code.)

The order of the patterns in the alist is a complete mystery to me.  I
tried to figure it out, but eventually gave up.  A remark won't cut
it, I think: we need a detailed description of the principles,
considerations, and the way of testing the results after adding a new
pattern.

> In fact the added pattern has visibly wrecked the display of etc/compilation.txt so I'm taking the slightly drastic step of reverting it.

That succeeded in my testing, so I wonder why it doesn't work for you.

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