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Subject: Re: save-excursion doesn't always work
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>> It might do a few things slightly differently, but it will modify the
>> buffer anyway, even if the end result is exactly the same as the
>> starting point (e.g. it will first turn all \n into spaces and then
>> turn them back into \n).
> We are not talking about modification of the buffer, but about marks
> being moved around in seemingly random manner.

Unless they're explicitly moved, marks only move in response to
buffer modifications.  Maybe the default filling function works
better than AUCTeX in this regard (I don't know) but even if it
does, it doesn't work 100% as the user wants it to.


        Stefan