bug#67268: closed ([PATCH] texinfo: add pointer about combining tests)

[GNU bug Tracking System]

Your message dated Sat, 25 Nov 2023 14:36:48 -0700
with message-id <202311252136.3APLamTE008226@freefriends.org>
and subject line 
has caused the debbugs.gnu.org bug report #67268,
regarding [PATCH] texinfo: add pointer about combining tests
to be marked as done.

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67268: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=67268
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> Subject: 
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> Re: [PATCH] texinfo: add pointer about combining tests
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> Date: 
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> Sat, 18 Nov 2023 19:27:38 -0700
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> Hi Michael,
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>     Date: Sun, 16 Oct 2016 18:35:53 +0200
>     From: Michael Stapelberg <michael@i3wm.org>
>     To: automake-patches@gnu.org
>     Subject: [PATCH] texinfo: add pointer about combining tests
>
>     https://lists.gnu.org/archive/html/automake-patches/2016-10/msg00002.html
>
> Seven years late(r), but I did finally merge (a version of) your
> suggestion of a portability note in the Automake manual about &&
> vs. test -a, as below.  Thanks! --karl
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> doc: mention shell operators preferred over `test` options.
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> * doc/automake.texi (Usage of Conditionals): mention that shell
> operators (&&, ||, ()) are preferred over `test` options (-a, -o,
> \(\)). Idea and POSIX url reference from Michael Stapelberg,
> https://lists.gnu.org/archive/html/automake-patches/2016-10/msg00002.html
> diff --git a/doc/automake.texi b/doc/automake.texi
> index 51a3c3dbe..635bdd28c 100644
> --- a/doc/automake.texi
> +++ b/doc/automake.texi
> @@ -11118,6 +11118,14 @@ must arrange for @emph{every} @code{AM_CONDITIONAL} to 
> be invoked every
>  time @command{configure} is run.  If @code{AM_CONDITIONAL} is run
>  conditionally (e.g., in a shell @code{if} statement), then the result
>  will confuse @command{automake}.
> +
> +For portability, it is best to use shell operators @code{&&} and
> +@code{||} and parentheses, when constructing a compound
> +@var{condition} using the @command{test} command, and not the
> +@code{-a} and @code{-o} options and parentheses as options to
> +@command{test}, all of which have been marked obsolescent by POSIX
> +(@url{https://pubs.opengroup.org/onlinepubs/9699919799/utilities/test.html#tag_20_128_161}).
> +The name @code{test} is also more portable than @code{[}.
>  @end defmac
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>  @cindex @option{--enable-debug}, example
>
> compile finished at Sat Nov 18 18:25:16 2023
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> Sat, 25 Nov 2023 14:36:48 -0700
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