rebase: keep original mq patch format (Issue1574)
Rebase now doesn't make assumptions about which format has been
used for a mq patch (git or normal).
Before finalizing a patch it keeps track of the original format,
by reading its header, and then restores the format when reimporting
it.
This way it also allows for having mixed styles.
Note: this version corrects a failure in the test
#!/bin/sh
echo "[extensions]" >> $HGRCPATH
echo "color=" >> $HGRCPATH
hg init repo
cd repo
cat > a <<EOF
c
c
a
a
b
a
a
c
c
EOF
hg ci -Am adda
cat > a <<EOF
c
c
a
a
dd
a
a
c
c
EOF
echo '% default context'
hg diff --nodates --color=always
echo '% --unified=2'
hg diff --nodates -U 2 --color=always