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

# Test issue 746: renaming files brought by the
# second parent of a merge was broken.

echo % create source repository
hg init t
cd t
echo a > a
hg ci -Am a
cd ..

echo % fork source repository
hg clone t t2
cd t2
echo b > b
hg ci -Am b

echo % update source repository
cd ../t
echo a >> a
hg ci -m a2

echo % merge repositories
hg pull ../t2
hg merge

echo % rename b as c
hg mv b c
hg st
echo % rename back c as b
hg mv c b
hg st