#25425 - lua does not set search paths

Package	Source(s)		Maintainer(s)
guix		PTS Buildd Popcon

Message #14 received at 25425@debbugs.gnu.org (full text, mbox, reply):

Received: (at 25425) by debbugs.gnu.org; 12 Jan 2017 14:46:27 +0000
From debbugs-submit-bounces@debbugs.gnu.org Thu Jan 12 09:46:27 2017
Received: from localhost ([127.0.0.1]:50740 helo=debbugs.gnu.org)
	by debbugs.gnu.org with esmtp (Exim 4.84_2)
	(envelope-from <debbugs-submit-bounces@debbugs.gnu.org>)
	id 1cRge3-0005nV-5t
	for submit@debbugs.gnu.org; Thu, 12 Jan 2017 09:46:27 -0500
Received: from sender163-mail.zoho.com ([74.201.84.163]:21097)
 by debbugs.gnu.org with esmtp (Exim 4.84_2)
 (envelope-from <rekado@elephly.net>) id 1cRge1-0005nM-Kv
 for 25425@debbugs.gnu.org; Thu, 12 Jan 2017 09:46:26 -0500
Received: from localhost (xd933e5de.dyn.telefonica.de [217.51.229.222]) by
 mx.zohomail.com with SMTPS id 1484232379732247.56501610128362;
 Thu, 12 Jan 2017 06:46:19 -0800 (PST)
References: <87shoo7dgx.fsf@mdc-berlin.de> <87r34879o1.fsf@elephly.net>
 <87bmvc2vjn.fsf@gnu.org>
User-agent: mu4e 0.9.18; emacs 25.1.1
From: Ricardo Wurmus <rekado@elephly.net>
To: Ludovic Courtès <ludo@gnu.org>
Subject: Re: bug#25425: cannot express search path
In-reply-to: <87bmvc2vjn.fsf@gnu.org>
Date: Thu, 12 Jan 2017 15:46:15 +0100
Message-ID: <87lgug72vc.fsf@elephly.net>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 8bit
X-Spam-Score: 1.0 (+)
X-Debbugs-Envelope-To: 25425
Cc: 25425@debbugs.gnu.org
X-BeenThere: debbugs-submit@debbugs.gnu.org
X-Mailman-Version: 2.1.18
Precedence: list
List-Id: <debbugs-submit.debbugs.gnu.org>
List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, 
 <mailto:debbugs-submit-request@debbugs.gnu.org?subject=unsubscribe>
List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/>
List-Post: <mailto:debbugs-submit@debbugs.gnu.org>
List-Help: <mailto:debbugs-submit-request@debbugs.gnu.org?subject=help>
List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, 
 <mailto:debbugs-submit-request@debbugs.gnu.org?subject=subscribe>
Errors-To: debbugs-submit-bounces@debbugs.gnu.org
Sender: "Debbugs-submit" <debbugs-submit-bounces@debbugs.gnu.org>
X-Spam-Score: 1.0 (+)

Ludovic Courtès <ludo@gnu.org> writes:

> I think this should work:
>
>        (search-path-specification
>          (variable "LUA_PATH")
>          (separator ";")
>          (files '("share/lua/5.3"))
>          (file-pattern "\\.lua$")
>          (file-type 'regular))

I tried this very same thing but it doesn’t work because Lua expects
placeholders (“?”) in the search paths.  The placeholders are replaced
with the actual package names.  If the actual file name does not exist
it will try the next pattern.  If the file *does* exist – which *will* be
the case for any of the files on LUA_PATH that have been generated by
the search-path-specification — Lua will try to load the package from
that path.

This will fail because a search for the “lpeg” module would be satisfied
by the file “re.lua”, because that’s the first valid file on the
LUA_PATH.  “re.lua” requires “lpeg” itself, so another lookup is
performed, which will again result in “re.lua” to be loaded…

AIUI we must generate a value for LUA_PATH that keeps the placeholders
intact.

--
Ricardo

GPG: BCA6 89B6 3655 3801 C3C6  2150 197A 5888 235F ACAC
http://elephly.net

Display info messages

Send a report that this bug log contains spam.

debbugs.gnu.org maintainers <help-debbugs@gnu.org>. Last modified: Tue Sep 9 11:32:01 2025; Machine Name: wallace-server

GNU bug tracking system

Debbugs is free software and licensed under the terms of the GNU Public License version 2. The current version can be obtained from https://bugs.debian.org/debbugs-source/.

#25425 lua does not set search paths