#!/bin/bash
set -euox pipefail

unset GREP_OPTIONS

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