Updated plugins

sources_non_forked/syntastic/syntax_checkers/sh/shellcheck.vim

@@ -11,8 +11,10 @@ let g:loaded_syntastic_sh_shellcheck_checker = 1
 let s:save_cpo = &cpo
 set cpo&vim
 
-function! SyntaxCheckers_sh_shellcheck_GetLocList() dict
-    let makeprg = self.makeprgBuild({ 'args_after': '-f gcc' })
+function! SyntaxCheckers_sh_shellcheck_GetLocList() dict " {{{1
+    let makeprg = self.makeprgBuild({
+        \ 'args': s:GetShell(),
+        \ 'args_after': '-f gcc' })
 
     let errorformat =
         \ '%f:%l:%c: %trror: %m,' .
@@ -32,7 +34,27 @@ function! SyntaxCheckers_sh_shellcheck_GetLocList() dict
     endfor
 
     return loclist
-endfunction
+endfunction " }}}1
+
+" Utilities {{{1
+
+function! s:GetShell() " {{{2
+    let sh = ''
+
+    if syntastic#util#parseShebang()['exe'] ==# ''
+        if syntastic#util#rawVar('is_kornshell', 0) || syntastic#util#rawVar('is_posix', 0)
+            let sh = 'ksh'
+        elseif syntastic#util#rawVar('is_bash', 0)
+            let sh = 'bash'
+        elseif syntastic#util#rawVar('is_sh', 0)
+            let sh = 'sh'
+        endif
+    endif
+
+    return sh !=# '' ? '-s ' . sh : ''
+endfunction " }}}2
+
+" }}}1
 
 call g:SyntasticRegistry.CreateAndRegisterChecker({
     \ 'filetype': 'sh',