Before: call ale#assert#SetUpLinterTest('cmake', 'cmake_lint') After: call ale#assert#TearDownLinterTest() Execute(The default command should be correct): AssertLinter 'cmake-lint', ale#Escape('cmake-lint') . ' %t' Execute(The executable should be configurable): let g:ale_cmake_cmake_lint_executable = 'foobar' AssertLinter 'foobar', ale#Escape('foobar') . ' %t'