Before: let g:buffer = bufnr('%') function! GetList() abort return map( \ ale#loclist_jumping#GetSortedList(), \ '{''lnum'': v:val.lnum, ''col'': v:val.col, ''text'': v:val.text}' \) endfunction After: unlet! g:buffer unlet! g:new_buffer let g:ale_set_loclist = 1 let g:ale_set_quickfix = 0 call setloclist(winnr(), []) call setqflist([]) delfunction GetList Execute(The loclist should be filtered and sorted appropriately for jumping): :new let g:new_buffer = bufnr('%') AssertNotEqual g:new_buffer, g:buffer call setloclist(winnr(), [ \ {'lnum': 1, 'col': 1, 'text': 'ignore this', 'bufnr': g:buffer}, \ {'lnum': 20, 'col': 5, 'text': 'baz', 'bufnr': g:new_buffer}, \ {'lnum': 10, 'col': 6, 'text': 'bar', 'bufnr': g:new_buffer}, \ {'lnum': 10, 'col': 5, 'text': 'foo', 'bufnr': g:new_buffer}, \]) AssertEqual \ [ \ {'lnum': 10, 'col': 5, 'text': 'foo'}, \ {'lnum': 10, 'col': 6, 'text': 'bar'}, \ {'lnum': 20, 'col': 5, 'text': 'baz'}, \ ], \ GetList() Execute(quickfix should be filtered and sorted appropriately for jumping): let g:ale_set_loclist = 0 let g:ale_set_quickfix = 1 :new let g:new_buffer = bufnr('%') AssertNotEqual g:new_buffer, g:buffer call setqflist([ \ {'lnum': 1, 'col': 1, 'text': 'ignore this', 'bufnr': g:buffer}, \ {'lnum': 20, 'col': 5, 'text': 'baz', 'bufnr': g:new_buffer}, \ {'lnum': 10, 'col': 6, 'text': 'bar', 'bufnr': g:new_buffer}, \ {'lnum': 10, 'col': 5, 'text': 'foo', 'bufnr': g:new_buffer}, \]) AssertEqual \ [ \ {'lnum': 10, 'col': 5, 'text': 'foo'}, \ {'lnum': 10, 'col': 6, 'text': 'bar'}, \ {'lnum': 20, 'col': 5, 'text': 'baz'}, \ ], \ GetList() Execute(An empty List should be returned when both lists are turned off): let g:ale_set_loclist = 0 let g:ale_set_quickfix = 0 call setqflist([{'lnum': 1, 'col': 1, 'text': 'foo', 'bufnr': bufnr('%')}]) call setloclist(winnr(), [{'lnum': 1, 'col': 1, 'text': 'foo', 'bufnr': bufnr('%')}]) AssertEqual [], GetList()