Subject: Re: bug#71370: 30.0.50; Please un-obsolete buffer-substring as a generalized variable

From: Stefan Monnier <[email-masked]>
Date: Sun, 23 Mar 2025 10:30:41 -0400

>> > That is not a necessary condition for making buffer-substring a
>> > generalized variable.  We could have an internal function, maybe not
>> > even exposed to Lisp, to replace the buffer substring.
>> 
>> We do, exposed to ELisp:
>> 
>>     (macroexpand '(setf (buffer-substring A B) C))
>> =~>
>>     (cl--set-buffer-substring A B C)
>
> I meant that we could make the body of cl--set-buffer-substring a
> single subr call, not a delete-region followed by insert.  Or even
> completely replace cl--set-buffer-substring with that subr.

Indeed, if we can't agree on `replace-region`, I'm thinking of renaming
it `cl--set-buffer-substring`.  🙁

        Stefan