bug#1496: 23.0.60; comint-delete-output should copy region to the kill ring

[Lars Ingebrigtsen <larsi@gnus.org>]

barry@python.org writes:

> comint-delete-output uses delete-region instead of kill-region because the
> latter sets this-command.  Still, comint-delete-output should copy the killed
> region to the kill ring so that it can be conveniently yanked into other
> buffers.  A use case:
>
> I use bzr diff in a shell buffer to get the changes in my working directory.
> I'd like to copy that output directly into an email or a pastebin buffer.
> With comint-delete-output's current behavior I can't use C-c C-o because the
> output is thrown away.  By adding a call to copy-region-as-kill, I can now go
> to my mail buffer and hit C-y to paste the diff output.

(I'm going through old bug reports that unfortunately wasn't resolved at
the time.)

I think that sounds like useful functionality, to I've now made
`C-u C-c C-o' save the output on the kill ring (before deleting it) in
Emacs 28.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no