evolve: show a message when evolution leads to no changes to commit
In case of orphan resolution, evolution may result in no changes to commit. This
patch adds a use message in such cases. This is same as the rebase behavior.
#require test-repo pyflakes
Copied from Mercurial core (60ee2593a270)
$ cd "`dirname "$TESTDIR"`"
run pyflakes on all tracked files ending in .py or without a file ending
(skipping binary file random-seed)
$ hg locate 'set:(**.py or grep("^#!.*python")) - removed()' 2>/dev/null \
> | xargs pyflakes 2>/dev/null