Before: runtime ale_linters/html/djlint.vim After: call ale#linter#Reset() Execute(The Djlint handler should parse output with a column correctly): AssertEqual \ [ \ { \ 'lnum': 47, \ 'vcol': 1, \ 'col': 8, \ 'code': 'H008', \ 'text': 'Attributes should be double quoted.', \ 'type': 'W' \ } \ ], \ ale#handlers#djlint#Handle(0, [ \ 'H008 47:8 Attributes should be double quoted.' \ ])