bug#38515: 24.5; changes to non-file-visiting buffers like wdired might be lost upon exiting Emacs

[Samuel Wales]

wdired allows you to edit dired buffers.  you can think of it like
editing a file.

i wonder if a mechanism could be put into place to deal gracefuly with
wdired, wgrep, and other stuff where you want to go and take a look at
the changes.

some useful things for these buffers and also for file-visiting
buffers might include diff, visiting, and recursive edit.

Thanks.

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