diffutils: Bugs
18.2 Reporting Bugs
===================
If you think you have found a bug in GNU 'cmp', 'diff', 'diff3', or
'sdiff', please report it by electronic mail to the GNU utilities bug
report mailing list (http://mail.gnu.org/mailman/listinfo/bug-diffutils)
<bug-diffutils@gnu.org>. Please send bug reports for GNU 'patch' to
<bug-patch@gnu.org>. Send as precise a description of the problem as
you can, including the output of the '--version' option and sample input
files that produce the bug, if applicable. If you have a nontrivial fix
for the bug, please send it as well. If you have a patch, please send
it too. It may simplify the maintainer's job if the patch is relative
to a recent test release, which you can find in the directory
<ftp://alpha.gnu.org/gnu/diffutils/>.