bug#17148: Revert buffer menu-item and file permission changes

[Lars Ingebrigtsen]

Joe Camaioni <jcamaion@tbfmdev1.ctasdev.tc.faa.gov> writes:

> A buffer has been loaded with a file.  It is initially unwritable.  A
> chmod is performed in a shell window to make it writable.  Going into
> the File menu pulldown, the Revert Buffer stays gray-ed out, and the
> file is still listed as unwritable.

I've now fixed this in Emacs 29.

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   bloggy blog: http://lars.ingebrigtsen.no