GNU bug report logs - #28264
Accessing source directory through symlink produces false warnings

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Glenn Morris <rgm <at> gnu.org>
Subject: bug#28264: closed (Re: bug#28264: Accessing source directory
 through symlink produces false warnings)
Date: Tue, 29 Aug 2017 04:58:02 +0000

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Your bug report

#28264: Accessing source directory through symlink produces false warnings

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 28264 <at> debbugs.gnu.org.

-- 
28264: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=28264
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Glenn Morris <rgm <at> gnu.org>, 28264-done <at> debbugs.gnu.org
Cc: Michael Albinus <michael.albinus <at> gmx.de>
Subject: Re: bug#28264: Accessing source directory through symlink produces
 false warnings
Date: Mon, 28 Aug 2017 21:57:15 -0700

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Thanks for the bug report. I reproduced the problem and installed the attached 
patch to fix it. It strikes me, though, that the code still won't work in other 
cases (e.g., symlinks containing ":"), and that Emacs probably has other 
instances of confusion between how it treats symlinks and how the OS treats 
them. I'll CC: this to Michael to give him a heads-up about this particular 
issue, as I'm not really up to speed on magic file names.

[0001-Silence-false-alarms-for-symlinks-to-sources.patch (text/x-patch, attachment)]

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From: Glenn Morris <rgm <at> gnu.org>
To: submit <at> debbugs.gnu.org
Subject: Accessing source directory through symlink produces false warnings
Date: Mon, 28 Aug 2017 14:25:20 -0400

Package: emacs
Version: 26.0.50

Current master (cd0360f) on rhel7.

Emacs sources are in (eg) /tmp/emacs/git/master
cd ~
ln -s /tmp/emacs/git/master
~/master/src/emacs -Q

This results in the following new, spurious warnings:
    
    Warning: arch-dependent data dir '/:/tmp/emacs/git/master/lib-src/':
       No such file or directory
    Warning: Lisp directory '/:/tmp/emacs/git/master/lisp':
       No such file or directory
    
I would suspect recent changes to file name / symlink handling.

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