Re: address@hidden: highlight-changes-rotate-faces sets buffer modified flag]

[Richard Stallman]

    Maybe we could use a macro like

    (defmacro with-buffer-undo-unmodified (&rest body)
       "Eval BODY, preserving the current buffer's modified state.
    In addition create entries to `buffer-undo-list' in order to not alter
    the buffer's modified state during undos and redos."

First let's see what is best in this specific case.
Afterward we could see if any part of it is worth generalizing.