tests/test-abort-checkin

convert: readd --filemap

To handle merges correctly, this revision adds a filemap_source class
that wraps a converter_source and does the work necessary to calculate
the subgraph we're interested in.

The wrapped converter_source must provide a new getchangedfiles method
that, given a revision rev, and an index N, returns the list of files
that are different in rev and its Nth parent.

The implementation depends on the ability to skip some revisions and to
change the parents field of the commit objects that we returned earlier.

To make the conversion restartable, we assume the revisons in the
revmapfile are topologically sorted.

#!/bin/sh

cat > abortcommit.py <<EOF
from mercurial import util

def hook(**args):
    raise util.Abort("no commits allowed")

def reposetup(ui, repo):
    repo.ui.setconfig("hooks", "pretxncommit.nocommits", hook)
EOF
abspath=`pwd`/abortcommit.py

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

hg init foo
cd foo
echo foo > foo
hg add foo

# mq may keep a reference to the repository so __del__ will not be called
# and .hg/journal.dirstate will not be deleted:
hg ci -m foo
hg ci -m foo

exit 0