Restore compatibility with GNU diff regarding --label Various options to "diff(1)" show filenames, and traditionally make use of the "--label" parameter, if set. Restore this behaviour in BSD diff. While here add a regression test PR: 244533 Submitted by: Jamie Landeg-Jones <jamie@catflap.org> MFC after: 3 days
head/usr.bin/diff/diff.c
head/usr.bin/diff/tests/diff_test.sh