bug#58826: 29.0.50; gud-gdb can't find core file if executable is in a different directory

[Eli Zaretskii <eliz@gnu.org>]

> From: Richard Stallman <rms@gnu.org>
> Cc: stefankangas@gmail.com, 58826@debbugs.gnu.org,
> 	dima@secretsauce.net
> Date: Wed, 28 Dec 2022 22:14:14 -0500
> 
>   > Telling GDB to chdir to another directory will not affect the
>   > default-directory of the *gud-FILE* buffer, and that was the OP's problem:
>   > the fact that typing a relative file name was interpreted relative to a
>   > directory he didn't expect.
> 
> It must be Emacs Lisp code that creates the *gud-FILE* buffer
> and handles these relative file name.  Can't that code be changed
> to DTRT?

The argument here, and the original problem, is about what is "TRT".
For some (many) use cases, what the code does now is already TRT.  I
attempted to explain that up-thread:

   IME, the current behavior covers most of the use cases: either you are
   debugging a program you are developing from its source tree, or you
   are debugging an installed program that's on PATH.

   > It's also really unintuitive to have an implicit change of directory
   > here, and it would match most people's expectations if it was changed, I
   > think. Do you know why we're doing that?

   If you think about that, it's actually quite natural: it makes the
   files you are likely to access from the debug session appear in the
   current directory.

   In any case, this is a long-standing behavior.