Plan 9 from Bell Labs’s /usr/web/sources/contrib/jas/root/lib/mercurial/hgrc.d/9diff.rc
# The 9diff extdiff command generates diff(1) compatible output # suitable for use with the plumber(4). [extensions] extdiff = [extdiff] 9diff = /bin/mercurial/9diff -cm $parent $child $root
