I have proselint setup like here, i.e.:
(flycheck-define-checker proselint
"A linter for prose."
:command ("proselint" source-inplace)
:error-patterns
((warning line-start (file-name) ":" line ":" column ": "
(id (one-or-more (not (any " "))))
(message) line-end))
:modes (text-mode markdown-mode gfm-mode))
(add-to-list 'flycheck-checkers 'proselint)
How can I extend it to message-mode? Just adding message-mode to the list of modes above is not enough.
