syntastic/syntax_checkers/javascript/jsl.vim

"============================================================================
"File:        jsl.vim
"Description: Javascript syntax checker - using jsl
"Maintainer:  Martin Grenfell <martin.grenfell at gmail dot com>
"License:     This program is free software. It comes without any warranty,
"             to the extent permitted by applicable law. You can redistribute
"             it and/or modify it under the terms of the Do What The Fuck You
"             Want To Public License, Version 2, as published by Sam Hocevar.
"             See http://sam.zoy.org/wtfpl/COPYING for more details.
"============================================================================
if !exists("g:syntastic_javascript_jsl_conf")
    let g:syntastic_javascript_jsl_conf = ""
endif

function s:ConfFlag()
    if !empty(g:syntastic_javascript_jsl_conf)
        return "-conf " . g:syntastic_javascript_jsl_conf
    endif

    return ""
endfunction

function! SyntaxCheckers_javascript_GetLocList()
    let makeprg = syntastic#makeprg#build({
                \ 'exe': 'jsl',
                \ 'args': s:ConfFlag() . " -nologo -nofilelisting -nosummary -nocontext -process",
                \ 'subchecker': 'jsl' })
    let errorformat='%W%f(%l): lint warning: %m,%-Z%p^,%W%f(%l): warning: %m,%-Z%p^,%E%f(%l): SyntaxError: %m,%-Z%p^,%-G'
    return SyntasticMake({ 'makeprg': makeprg, 'errorformat': errorformat })
endfunction