Comparing and Merging Files
18.2 Reporting Bugs
If you think you have found a bug in GNU
sdiff, please report it
by electronic mail to the
bug report mailing list email@example.com. Please send
bug reports for GNU
firstname.lastname@example.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/.