bug#13949: 24.4.1; `fill-paragraph' should not always put the buffer as modified

[Lars Magne Ingebrigtsen]

Óscar Fuentes <ofv@wanadoo.es> writes:

> Again, the question nobody dares to answer: is there a legit case where
> the user benefits from marking the buffer as modified after applying or
> changing text properties?
>
> From the lack of response so far, I guess that the answer is "no".

Some modes support generating various "rich text" modes based on text
properties.

Those modes are rare, though.  I think we probably could say that those
modes should "do something special" and make Emacs, by default, not care
about text properties for the "buffer changed" thing.

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