Re: undo-kill-buffer

["Stuart D. Herring" <herring@lanl.gov>]

> Hi, Does anyone know of an existing emacs function that will undo a
> kill-buffer command?  So like, if the user issues C-x k and then suddenly
> decides it was a mistake, they could just M-x undo-kill-buffer to get it
> back.
>
> I have started coding this for myself.  If it's genuinely new and I'm not
> duplicating effort, then I will polish it and contribute to the main
> codebase.
>
> Thanks,
> Aaron

The only case where killing a buffer cannot be undone with such commands
as `find-file' or `dired' is when the buffer contained unsaved changes or
was not associated with an external repository (file, directory, IRC
channel, etc.), like `*scratch*'.  How do you propose to bring such
buffers (and their changes, if any) back without causing `kill-buffer' to
not, in fact, kill buffers?

If you are doing that (interfering with `kill-buffer'), what you really
want is probably a "Trash Can" for buffers.  Then you want to have a
"mark-buffer-for-kill" command (which toggles the buffer's state, and
buries it if it's being marked), and then a "kill-marked-buffers" command
to actually destroy them.  Of course, this is already available via the
buffer list (`list-buffers')...

Davis

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