GNU bug report logs - #62814
[PATCH] Clarify substitute* docstring with an additional example

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#62814: closed ([PATCH] Clarify substitute* docstring with an
 additional example)
Date: Thu, 11 May 2023 12:40:02 +0000

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Your message dated Thu, 11 May 2023 14:38:56 +0200
with message-id <87ednn3uvz.fsf <at> gnu.org>
and subject line Re: bug#62814: [PATCH] Clarify substitute* docstring with an additional example
has caused the debbugs.gnu.org bug report #62814,
regarding [PATCH] Clarify substitute* docstring with an additional example
to be marked as done.

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help-debbugs <at> gnu.org.)


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From: "Wicki Gabriel (wicg)" <wicg <at> zhaw.ch>
To: "guix-patches <at> gnu.org" <guix-patches <at> gnu.org>
Subject: [PATCH] Clarify substitute* docstring with an additional example
Date: Thu, 13 Apr 2023 11:44:11 +0000

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Hello

I've created this little patch after wondering how to match (and substitute*) against end-of-line. My patch is based on
982698c52fb388e278dc4cec4b124406f23f102a.

Thanks for review and merge.

gabber

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From: Ludovic Courtès <ludo <at> gnu.org>
To: "Wicki Gabriel (wicg)" <wicg <at> zhaw.ch>
Cc: 62814-done <at> debbugs.gnu.org
Subject: Re: bug#62814: [PATCH] Clarify substitute* docstring with an
 additional example
Date: Thu, 11 May 2023 14:38:56 +0200

Hi,

"Wicki Gabriel (wicg)" <wicg <at> zhaw.ch> skribis:

> From 5ae3c5512e85189a47c859c6128adfd3bfc63159 Mon Sep 17 00:00:00 2001
> From: Gabriel Wicki <gabriel <at> erlikon.ch>
> Date: Thu, 13 Apr 2023 10:31:57 +0200
> Subject: [PATCH] guix: build: utils: Clarify substitute* docstring with an
>  example.
>
> * guix/build/utils.scm (substitute*):  Add an example on how to match
> end-of-line.
> * doc/guix.texi (Build Utilities): Update the corresponding passage.

[...]

>  Be careful about using @code{$} to match the end of a line; by itself it
> -won't match the terminating newline of a line.
> +won't match the terminating newline of a line, e.g. to match a whole
> +line ending with a backslash, one needs a regex like @code{"(.*)\\\\\n$"}.

Applied with a minor tweak and without the (guix build utils) change,
which would entail a world rebuild.

Thanks!

Ludo’.

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