GNU bug report logs - #2062
PATH can contain non-expanded variables

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Message #30 received at 2062 <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Juanma Barranquero <lekktu <at> gmail.com>
To: Jason Rumney <jasonr <at> f2s.com>
Cc: 2062 <at> debbugs.gnu.org
Subject: Re: bug#2062: PATH can contain non-expanded variables
Date: Tue, 27 Jan 2009 09:34:26 +0100

On Tue, Jan 27, 2009 at 02:56, Jason Rumney <jasonr <at> f2s.com> wrote:

> The right place to do this expansion is where the variable is read from the
> registry, and only when the type is REG_EXPAND_SZ.

The problem is, we don't read
"HKLM\Software\Microsoft\Windows\CurrentVersion\App
Paths\emacs.exe\Path", we find the PATH made for us and it contains
unexpanded variables.

My patch modifies decode_env_path, because it is used for PATH-like
variables, not generic environment variables. How likely is that such
a PATH-like variable contains a string like %VARIABLENAME%, meaning a
literal "%VARIABLENAME%" directory or filename (or part of it)? That's
a hypothetical problem, while my path containing such a variable is a
fact.

    Juanma

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