From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
Subject: bug#25425: cannot express search path
Date: Thu, 12 Jan 2017 15:38:04 +0100
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References: <87shoo7dgx.fsf@mdc-berlin.de> <87r34879o1.fsf@elephly.net>
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In-Reply-To: <87r34879o1.fsf@elephly.net> (Ricardo Wurmus's message of "Thu,
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To: Ricardo Wurmus <rekado@elephly.net>
Cc: 25425@debbugs.gnu.org

Ricardo Wurmus <rekado@elephly.net> skribis:

> It seems that the =E2=80=9Csearch-path-specification=E2=80=9D cannot be u=
sed to include
> placeholders such as =E2=80=9C?=E2=80=9D as required by LUA_PATH and LUA_=
CPATH.  The
> search paths in Lua are not directories and they are not actual file
> names.

Indeed.

> I suggest adding an optional =E2=80=9Cplaceholder=E2=80=9D field to
> =E2=80=9Csearch-path-specification=E2=80=9D, which would hold a string li=
ke =E2=80=9C?/?.lua=E2=80=9D in
> this case.

I think this should work:

       (search-path-specification
         (variable "LUA_PATH")
         (separator ";")
         (files '("share/lua/5.3"))
         (file-pattern "\\.lua$")
         (file-type 'regular))

See libxml2 for an example with similar requirements.

HTH!

Ludo=E2=80=99.