mdiff: fix diff -b/B/w on mixed whitespace hunks (issue127)
Previous code was computing hunks then checking if these hunks could be ignored
when taking whitespace/blank-lines options in accounts. This approach is simple
but fails with hunks containing both whitespace and non-whitespace changes, the
whole hunk is emitted while it can be mostly made of whitespace. The new
version normalize the whitespaces before hunk generation, and test for
blank-lines afterwards.
#!/bin/sh
"$TESTDIR/hghave" inotify || exit 80
hg init
echo "[extensions]" > .hg/hgrc
echo "inotify=" >> .hg/hgrc
hg inserve -d --pid-file .hg/inotify.pid
echo a > a
hg ci -Aqm0
hg co -q null
hg co -q
hg st
cat a
kill `cat .hg/inotify.pid`