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<head>
<title>UK TeX FAQ -- question label bug</title>
</head><body>
<h3>What to do if you find a bug</h3>
<p/>For a start, make entirely sure you <em>have</em> found a bug.
Double-check with books about TeX, LaTeX, or whatever you’re using;
compare what you’re seeing against the other answers above; ask every
possible person you know who has any TeX-related expertise.
The reasons for all this caution are various.
<p/>If you’ve found a bug in TeX itself, you’re a rare animal indeed.
Don Knuth is so sure of the quality of his code that he offers real
money prizes to finders of bugs; the cheques he writes are
such rare items that they are seldom cashed. If <em>you</em>
think you have found a genuine fault in TeX itself (or Metafont, or the
CM fonts, or the TeXbook), don’t immediately write to Knuth,
however. He only looks at bugs infrequently, and even then
only after they are agreed as bugs by a small vetting team. In the
first instance, contact Barbara Beeton at the AMS
(<i>bnb@ams.org</i>), or contact
<a href="FAQ-TUGstar.html">TUG</a>.
<p/>If you’ve found a bug in LaTeX2e, <a href="FAQ-latexbug.html">report it</a>
using mechanisms supplied by the LaTeX team. (Please be
careful to ensure you’ve got a LaTeX bug, or a bug in one of the
“required” packages distributed by the LaTeX team.)
<p/>If you’ve found a bug in a contributed LaTeX package, you could try
contacting the author (if you can find a contact address). However,
it’s generally best to treat any package as unsupported, in the first
instance, and only try the author <em>after</em> mailing list/news group
support has failed you.
<p/>If you’ve found a bug in LaTeX 2.09, or some other such unsupported
software, you may find help or
<em>de facto</em> support on a newsgroup such as
<i>comp.tex.tex</i> or on a mailing list such as
<a href="mailto:texhax@tug.org"><i>texhax@tug.org</i></a>; be careful to include a
<a href="FAQ-minxampl.html">code example</a> of the
failure, if relevant.
<p/>Failing all else, you may need to pay for
help — TUG maintains a
<a href="http://www.tug.org/consultants.html">register of TeX consultants</a>.
<p/><p/>
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