convert: allow the converter_source to say "skip this revision" If getchanges returns a string, it's assumed to be the id of an already converted revision. We map the current revision to the same revision this converted revision was mapped to. To allow skipping a root revision, getchanges can return the special string 'hg-convert-skipped-revision' (a.k.a. common.SKIPREV), which hopefully won't clash with any real id. The converter_source is responsible for rewriting the parents of the commit objects to make sure the revision graph makes sense.

#!/bin/sh

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

hg init
echo a > a
hg commit -Ama -d '1 0'

hg email --date '1970-1-1 0:1' -n -f quux -t foo -c bar tip | \
  sed -e 's/\(Message-Id:.*@\).*/\1/'

echo b > b
hg commit -Amb -d '2 0'

hg email --date '1970-1-1 0:2' -n -f quux -t foo -c bar -s test 0:tip | \
  sed -e 's/\(Message-Id:.*@\).*/\1/' | \
  sed -e 's/\(In-Reply-To:.*@\).*/\1/'

hg email -m test.mbox -f quux -t foo -c bar -s test 0:tip