bug#12911: 24.3.50; let users decide where (& perhaps whether) `emacs_backtrace.txt' files are written

[Stefan Monnier]

>> >> No need to change anything on platforms where stderr works.
>> > stderr works on Windows as well.  See the code I wrote.
>> If stderr works, then why do we need emacs_backtrace.txt?
> For when the stuff written to stderr ends up in the Great Void, or
> scrolls off the screen, or whatever.

Right.  That's what I meant by "stderr doesn't work" (IOW while it does
work in some cases, it can't be relied upon).

So let me reword my suggestion:

  I suggested to change the code such that, in those cases where we need
  to use emacs_backtrace.txt, we use ~/.emacs.d/backtrace.txt instead.


        Stefan