Make compression more intelligent: - we don't attempt to compress things under 44 bytes (empirical) - we check whether larger objects actually compress - we tag objects to indicate their compression NUL means uncompressed and starts with NUL x means gzipped and starts with x (handy) u means uncompressed, drop the u

set -ex
export EDITOR=true
rm -rf test branch

mkdir test
cd test
echo foo>foo
hg init
hg addremove
hg commit
hg verify
cd ..

cp -a test branch
cd branch
echo bar>>foo
hg commit

cd ../test
hg merge ../branch
hg verify