tests/test-diff-color

convert/svn: make sink recover gracefully from empty changeset

Otherwise when processing a changeset that in fact changes no files
(perhaps due to bug in import from CVS) can get something like:
  unexpected svn output:
  abort: unable to cope with svn output

Bug report and patch draft by Jesse Glick <[e-mail]>

#!/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

echo '% diffstat'
hg diff --stat --color=always

echo "record=" >> $HGRCPATH
echo "[ui]" >> $HGRCPATH
echo "interactive=true" >> $HGRCPATH
echo "[diff]" >> $HGRCPATH
echo "git=True" >> $HGRCPATH

echo % record
chmod 0755 a
hg record --color=always -m moda a <<EOF
y
y
EOF
echo

echo "[extensions]" >> $HGRCPATH
echo "mq=" >> $HGRCPATH

hg rollback
echo % qrecord
hg qrecord --color=always -m moda patch <<EOF
y
y
EOF
echo