errorformat for LaTeX

[Lifepillar]

The log of a typeset LaTeX document of mine has the following warning:

LaTeX Warning: Reference `sec:encryption' on page 1 undefined on input line 113
6

(In case the formatting changes when sending, the above message is all
on a single line, except for the last digit of the line number, which is
at the start of the next line by itself).

My current error format captures line number 113, of course. Is there
any chance to match a line number split like that?

Alternatively, do you know of any way to have LaTeX spit out saner
messages? AFAICS, it wraps text at character 80 no matter what.

Thanks,
Life.