cola --version (return code: 0)
cola version 2.11
cola --HELP (return code: 2)
usage: cola [-h]
{cola,about,am,archive,branch,browse,classic,config,dag,diff,fetch,find,grep,merge,pull,push,rebase,recent,remote,search,stash,tag,version}
...
cola: error: unrecognized arguments: --HELP