Re: save-buffer in tar-mode

[Kenichi Handa]

In article <address@hidden>, Tak Ota <address@hidden> writes:
> Recently I realized that undo information was discarded as soon as
> executing save-buffer in a buffer which was opened from tar-mode.
> tar-subfile-save-buffer at a glance didn't lead me to exactly where it
> discarded undo information.  Anyway, is this an intended behavior?

Yes.  tar-mode toggles enable-multibyte-characters on saving
a file by set-buffer-multibyte and that function discards
undo info.  To fix it, we must record this toggling in
buffer-undo-list.  I proposed it long ago but was rejected
at that time (I don't remember the reason, perhaps, just
because it's not worth to work on it).

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Ken'ichi HANDA
address@hidden