[texhax] Strange TeX questions about line breaks

[Karl Berry]

I suggest path.sty, included in Eplain (http://tug.org/eplain) and also
on CTAN (http://www.ctan.org/tex-archive/macros/latex/contrib/misc/path.sty).

Despite the directory location on CTAN, it works with plain TeX and
AMSTeX (as well as LaTeX).

By default, it does not break at any character, but only at certain
punctuation characters.  Usually this is better.  You could configure
it to allow breaking after more chars, if needed.  There's info in the
file itself about how to do this.

Happy line breaking,
karl