Re: [PATCH v2] gdbsupport: add path_join function

[Eli Zaretskii <eliz@gnu.org>]

> Date: Wed, 20 Apr 2022 13:38:08 +0100
> Cc: simon.marchi@polymtl.ca, gdb-patches@sourceware.org,
>  simon.marchi@efficios.com
> From: Pedro Alves <pedro@palves.net>
> 
> On 2022-04-20 13:35, Eli Zaretskii wrote:
> 
> >> " (...) joining with an absolute path on the right hand side, like this:
> >>  
> >>    path_join ("/foo", "/bar");
> >>  
> >>  results in just the right hand side being kept.  In this example, the
> >>  result is "/bar".
> >> "
> > 
> > Or maybe I've lost the track of the discussion, since the above
> > doesn't sound consistent with what I though this function should do.
> > Did we switch the concept at some point?
> 
> Yes, we did.  This is mentioned in the the commit log of the v2 patch, where
> the snippet above was copied from.

Sorry for missing that.  But that brings in a whole new bunch of
issues.  For example, what should the below yield on MS-Windows?

  path_join ("C:\\foo", "\\\\host\\share");

Or what about the one below?

  path_join ("d:/foo/bar", "d:quux");

IOW, do we really want this function to become as complex as
expand-file-name in Emacs?