Merge pull request #364 from rbrown/sass_partial

By default do not check sass partials.

syntax_checkers/sass.vim

@@ -19,13 +19,21 @@ if !executable("sass")
     finish
 endif
 
+"By default do not check partials as unknown variables are a syntax error
+if !exists("g:syntastic_sass_check_partials")
+    let g:syntastic_sass_check_partials = 0
+endif
+
 "use compass imports if available
 let s:imports = ""
 if executable("compass")
     let s:imports = "--compass"
 endif
 
 function! SyntaxCheckers_sass_GetLocList()
+    if !g:syntastic_sass_check_partials && expand('%:t')[0] == '_'
+        return []
+    end
     let makeprg='sass --no-cache '.s:imports.' --check '.shellescape(expand('%'))
     let errorformat = '%ESyntax %trror:%m,%C        on line %l of %f,%Z%.%#'
     let errorformat .= ',%Wwarning on line %l:,%Z%m,Syntax %trror on line %l: %m'