suppress small hbox errors

Question

I would like to get a list of the really bad hbox errors (say 20pt + too wide) in my document. Is there a way to suppress the smaller errors? I have a really large file and looking through the log file otherwise is slightly painful.

I tried \hfuzz=50.002pt but this doesn't seem to work --- it still gives plently of smaller errors e.g.:

Overfull \hbox (5.77747pt too wide)...

Clarification: the file is 20,000 lines long but following the suggestion I started chopping it up to find a minimal counter-example. By doing this I realized that \hfuzz=50pt was called before \documentclass{amsart} and that caused the problem.

Answer 1

You say you want to be warned over 20pt, \hfuzz=50pt would silence everything up to 50pt, so you need

\hfuzz=20pt

Note that the default is .1pt if you allow 20pt without warning it would be better to set the text raggedright rather than just allow unusably bad justification.

However this produces no warnings despite most lines being over 10pt overfull

\documentclass{article}
\hfuzz=20pt
\begin{document}
\noindent X\dotfill X
\noindent X\dotfill X
\mbox{This line is wide}
\mbox{This line is too wide}
\mbox{This line is too wide}
\mbox{This line is too wide}
\mbox{This line is too wide}
\mbox{This line is too wide}
\mbox{This line is too wide}
\mbox{This line is too wide}
\mbox{This line is too wide}
\mbox{This line is too wide}
\mbox{also wide} \mbox{also wide}
\mbox{This line is too wide}
\mbox{also wide} \mbox{also wide}
\mbox{This line is too wide}
\mbox{also wide} \mbox{also wide}
\noindent X\dotfill X
\end{document}