evolvestate: add a class to wrap the state of `hg evolve` command
This patch adds a new file which contains a class which will act as a wrapper
for the data to be stored or used during the `hg evolve` command. This patch
just introduces the file and does not use it at the moment. The upcoming patches
will start using it.
#!/bin/bash
set -euox pipefail
unset GREP_OPTIONS
NOTOPIC="--config experimental.topic-mode=ignore"
compatbranches=`hg branches --quiet | grep 'mercurial-' | grep -v ':' | sort -n --reverse`
prev='stable'
for branch in $compatbranches; do
hg up $branch
hg merge $prev
hg commit -m "test-compat: merge $prev into $branch"
prev=$branch
done