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

[Lars Magne Ingebrigtsen]

Dmitry Gutov <dgutov@yandex.ru> writes:

> And yet, why would we allow such possibility? String comparison is
> plenty fast already.

Comparison is fast, but making a copy of a buffer (or its contents)
isn't.  (If the buffer is large, that is.)  If you've loaded a 2GB file
and hit `M-q' on a line, it would be rather awkward if that made Emacs
allocate an additional 2GB of data.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no