othree/coffee-check.vim — comment on commit 07af3320032cea8b61efde01cd06d2387afa200b
File: ftplugin/coffee/coffee-check.vim line 80
By othree:

Actually, I prefer not to display quickfix window by default.
the jslint.vim is better, highlight the error line, set error items into quickfix but not open it.
But some error message from coffee compiler didn't have line number.

For example:

->
super()

For this kind of errors, I assign the error line number as 1.
And there will not have good notice to tell the user what is the actual error if quickfix didn't show.