GNU bug report logs - #40977
Tilde-expansion in --long-options=

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Message #41 received at 40977 <at> debbugs.gnu.org (full text, mbox):

From: Ludovic Courtès <ludo <at> gnu.org>
To: Danny Milosavljevic <dannym <at> scratchpost.org>
Cc: 40977 <at> debbugs.gnu.org, Hartmut Goebel <h.goebel <at> crazy-compilers.com>,
 zimoun <zimon.toutoune <at> gmail.com>
Subject: Re: bug#40977: --load-path does not honor ~
Date: Sat, 02 May 2020 15:14:01 +0200

Danny Milosavljevic <dannym <at> scratchpost.org> skribis:

>> After processing options, guix need to "expanduser()" (as it is called
>> in Python) on all arguments which are paths.  
>
> Please don't do it.
>
> UNIX has its warts, and this is a well-known one (use ${HOME} instead).

Seconded.

Tilde expansion is performed by the shell.  In the case of
‘--foo=~/bar’, tilde expansion does not happen because ~ is right in the
middle of a string.

It’s admittedly annoying, but it’s not something Guix itself should
paper over.  Doing that would open a can of worms, as illustrated by the
example Tobias gave.

Ludo’.

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