bug#64104: Subject: 30.0.50; uncomment-region-default-1

[Eli Zaretskii]

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: Andreas Röhler <andreas.roehler@easy-emacs.de>,
>   64104@debbugs.gnu.org
> Date: Sat, 17 Jun 2023 14:39:08 -0400
> 
> >> C-u comment-dwim RET with an active region of the following Python code:
> >> 
> >> ---
> >> # for i in text:
> >> #     print("(i): {}".format(str(i)))
> >> ---
> >> 
> >> results in error saying
> >> 
> >> uncomment-region-default-1: Beginning of buffer
> 
> > Stefan, any comments?
> 
> - The error we give is not very user-friendly, so it might be good to
>   catch it and re-raise it as something more meaning ful the specific
>   operation performed.
> 
> - I have the vague impression that in some earlier version of that code we
>   would not signal an error but just remove as many comment markers as
>   possible (but no more than requested).
>   That could be a more friendly behavior.

I'll leave the bug open, then.  Patches to improve this command are
welcome.