amend: do not traceback on no-ops
If rewrite() generated changeset happened to be an existing one, the
call would traceback when trying to obsolete the changeset with itself.
Instead, leave gracefully, marking any intermediate changeset extinct.
#!/bin/sh
here=`readlink -f "$0"`
repo_root=`dirname "$here"`
cat << EOF >&2
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
XXX Add lines below to the [extensions] section of you hgrc XXX
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
EOF
cat << EOF | sed -e "s#XXXREPOPATHXXX#${repo_root}#"
[extensions]
# experimental extensions for mq export
qsync=XXXREPOPATHXXX/hgext/qsync.py
EOF