evolve: adapt for changed @command decorator
Core changed the hacky "^command" syntax to be a proper decorator
option in fa88170c10bb (help: adding a proper declaration for
shortlist/basic commands (API), 2018-10-12). This patch makes evolve
compatible with that.
#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