Before: runtime ale_linters/d/dmd.vim After: call ale#linter#Reset() Execute(DMD command line should be correct with imports): AssertEqual \ 'dmd ' . \ '-I' . ale#Escape('source') . ' ' . \ '-I' . ale#Escape('/prefix/include/d') . ' ' . \ '-I' . ale#Escape('/home/user/.dub/packages/pkg-0.0.1/pkg/src') . ' ' . \ ' ' . \ ' ' . \ ' ' . \ '-o- -wi -vcolumns -c %t', \ ale_linters#d#dmd#DMDCommand(bufnr(''), [ \ 'source', \ '/prefix/include/d', \ '/home/user/.dub/packages/pkg-0.0.1/pkg/src', \ '', \ '', \ '', \ '', \ '', \ '', \ ], {}) Execute(DMD command line should be correct with imports and version): AssertEqual \ 'dmd ' . \ '-I' . ale#Escape('source') . ' ' . \ '-I' . ale#Escape('/prefix/include/d') . ' ' . \ '-I' . ale#Escape('/home/user/.dub/packages/pkg-0.0.1/pkg/src') . ' ' . \ ' ' . \ '-version=' . ale#Escape('SOME_VERSION') . ' ' . \ ' ' . \ '-o- -wi -vcolumns -c %t', \ ale_linters#d#dmd#DMDCommand(bufnr(''), [ \ 'source', \ '/prefix/include/d', \ '/home/user/.dub/packages/pkg-0.0.1/pkg/src', \ '', \ '', \ '', \ 'SOME_VERSION', \ '', \ '', \ ], {}) Execute(DMD command line should be correct): AssertEqual \ 'dmd ' . \ '-I' . ale#Escape('source') . ' ' . \ '-I' . ale#Escape('/prefix/include/d') . ' ' . \ '-I' . ale#Escape('/home/user/.dub/packages/pkg-0.0.1/pkg/src') . ' ' . \ '-J' . ale#Escape('views') . ' ' . \ '-version=' . ale#Escape('SOME_VERSION') . ' ' . \ '-version=' . ale#Escape('SOME_OTHER_VERSION') . ' ' . \ '-debug=' . ale#Escape('SomeFeature') . ' ' . \ '-o- -wi -vcolumns -c %t', \ ale_linters#d#dmd#DMDCommand(bufnr(''), [ \ 'source', \ '/prefix/include/d', \ '/home/user/.dub/packages/pkg-0.0.1/pkg/src', \ '', \ 'views', \ '', \ 'SOME_VERSION', \ 'SOME_OTHER_VERSION', \ '', \ 'SomeFeature', \ ], {}) Execute(DMD command line should be correct with CR): " on windows, the function is called with carriage return AssertEqual \ 'dmd ' . \ '-I' . ale#Escape('source') . ' ' . \ '-I' . ale#Escape('C:\prefix\include\d') . ' ' . \ '-I' . ale#Escape('C:\Users\user\AppData\Local\Dub\packages\pkg-0.0.1\pkg\src') . ' ' . \ ' ' . \ ' ' . \ ' ' . \ '-o- -wi -vcolumns -c %t', \ ale_linters#d#dmd#DMDCommand(bufnr(''), [ \ "source\r", \ "C:\\prefix\\include\\d\r", \ "C:\\Users\\user\\AppData\\Local\\Dub\\packages\\pkg-0.0.1\\pkg\\src\r", \ "\r", \ "\r", \ "\r", \ "\r", \ "\r", \ "\r", \ ], {})