tests/test-diffstat

commit: save commit message so it's not destroyed by rollback.
(issue1635)

Rationale: if a pretxncommit hook rejects this commit, the transaction
is rolled back and the user's commit message is irrevocably lost.
So save a copy in .hg/last-message.txt, just in case.  Also handy if
the user deliberately rolls back a commit in order to amend it.

#!/bin/sh

hg init repo
cd repo
i=0; while [ "$i" -lt 213 ]; do echo a >> a; i=`expr $i + 1`; done
hg add a

echo '% wide diffstat'
hg diff --stat

echo '% diffstat width'
COLUMNS=24 hg diff --config ui.interactive=true --stat

hg ci -m adda

cat >> a <<EOF
a
a
a
EOF

echo '% narrow diffstat'
hg diff --stat

hg ci -m appenda

printf '\0' > b
hg add b

echo '% binary diffstat'
hg diff --stat

echo '% binary git diffstat'
hg diff --stat --git