I have the following function that runs eslint project wise:

function! EslintProject()
  " Allows using eslint --format compact output with quickfix list
  set errorformat+=%f:\ line\ %l\\,\ col\ %c\\,\ %trror\ -\ '%*[^']'\ %m
  set errorformat+=%f:\ line\ %l\\,\ col\ %c\\,\ %tarning\ -\ '%*[^']'\ %m
  " Is lines which don't match the format
  set errorformat+=%-G%.%#

  if executable('yarn')
    !yarn run --silent eslint . --ext .js,.jsx,.ts,.tsx,.vue --no-color -f compact
  elseif executable('npm')
    !npm run --silent eslint . --ext .js,.jsx,.ts,.tsx,.vue --no-color -f compact
    echoerr 'No ESLint found'

  " Restore values
  set errorformat-=%f:\ line\ %l\\,\ col\ %c\\,\ %trror\ -\ '%*[^']'\ %m
  set errorformat-=%f:\ line\ %l\\,\ col\ %c\\,\ %tarning\ -\ '%*[^']'\ %m
  set errorformat-=%-G%.%#

I'm trying to define a command for that:

command! -bar EslintProject call EslintProject() | cexpr | cw | redraw!

However, the quickfix list is not populated.

Is there a way of populating the quickfix list from a function call which executes external commands?


Try this:

com -bar EslintProject call EslintProject()

fu EslintProject() abort
  if executable('yarn')
    let cmd = 'yarn run --silent eslint . --ext .js,.jsx,.ts,.tsx,.vue --no-color -f compact'
  elseif executable('npm')
    let cmd = 'npm run --silent eslint . --ext .js,.jsx,.ts,.tsx,.vue --no-color -f compact'
    echoerr 'No ESLint found'

  let efm = &efm
  let efm ..= ',%f: line %l\, col %c\, %trror - ''%*[^'']'' %m'
  let efm ..= ',%f: line %l\, col %c\, %tarning - ''%*[^'']'' %m'
  let efm ..= ',%-G%.%#'

  sil let qfl = getqflist({'lines': systemlist(cmd), 'efm': efm})
  call setqflist(get(qfl, 'items', []))

If the error format doesn't work as expected, visit this site to build a better one.

You can get a quickfix list resulting from the parsing of the output of an arbitrary shell command, with an arbitrary error format, with this expression:

getqflist({'lines': systemlist('my shell command'), 'efm': 'my error format'})

As an example, this snippet should populate a valid quickfix list with all the files in /etc whose name end with .conf:

let qfl = getqflist({'lines': systemlist('find /etc/ -name "*.conf"'), 'efm': '%f'})
call setqflist(get(qfl, 'items', []))

For more info, see:

:h getqflist()
:h setqflist()
:h getqflist-examples
| improve this answer | |
  • Awesome! Thanks a lot @user938271... Works if I set let efm = '%f: line %l\, col %c\, %trror - ''%*[^'']'' %m' instead of appending the pattern. If I copy and paste exacltly as your example, it complains about having too many %f arguments. I guess that's because my efm is not empty. – Henrique Barcelos Apr 30 at 1:29
  • I think that's because I forgot a comma; I updated the code. – user938271 Apr 30 at 1:36
  • Yeah, but since this efm is only used inside the function and the function only uses eslint format, I see no reason to mix it with the global efm. But it works as well... Thank you very much. I've been a Vimer for almost 8 years and only now I'm trying to dive into vimscript. It's harder than I though :'D – Henrique Barcelos Apr 30 at 14:05

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