tests/test-bad-extension

Introduce summary command

#!/bin/sh

echo 'raise Exception("bit bucket overflow")' > badext.py
abspath=`pwd`/badext.py

echo '[extensions]' >> $HGRCPATH
echo "gpg =" >> $HGRCPATH
echo "hgext.gpg =" >> $HGRCPATH
echo "badext = $abspath" >> $HGRCPATH
echo "badext2 =" >> $HGRCPATH

hg -q help help 2>&1 | python -c \
  "import sys; sys.stdout.write(sys.stdin.read().replace('$abspath', '.../badext.py'))"