bug#5122: Mismatched parentheses when dealing with huge buffercontent

[Stefan Monnier]

>> I think it's better to modify the echo area message, such that if
>> Emacs hits the blink-matching-paren-distance limit (as opposed to
>> hitting point-min), the message says something like
>> Mismatched parentheses (within blink-matching-paren-distance)
> Error messages shouldn't be so verbose---they can't spell out every bell
> and whistle related to the error.  I prefer leaving things the way they
> are.

But it should be less definitive: rather than just say authoritatively
"mismatched paren", it should at least be more humble and say "can't
find matching paren".


        Stefan