From 11e38efa83bc1376d88f810a8d94b4fd5b6f2b6e Mon Sep 17 00:00:00 2001
From: w0rp <devw0rp@gmail.com>
Date: Wed, 7 Jun 2017 09:26:54 +0100
Subject: [PATCH] Fix a bug which breaks the tests

---
 autoload/ale/fix.vim  | 7 ++++---
 autoload/ale/util.vim | 6 +++++-
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/autoload/ale/fix.vim b/autoload/ale/fix.vim
index 7513a7c..e7cac27 100644
--- a/autoload/ale/fix.vim
+++ b/autoload/ale/fix.vim
@@ -232,10 +232,11 @@ function! s:RunFixer(options) abort
     let l:index = a:options.callback_index
 
     while len(a:options.callback_list) > l:index
-        let l:Function = a:options.callback_list[l:index]
+        let l:Function = ale#util#GetFunction(a:options.callback_list[l:index])
+
         let l:result = ale#util#FunctionArgCount(l:Function) == 1
-        \   ? call(l:Function, [l:buffer])
-        \   : call(l:Function, [l:buffer, copy(l:input)])
+        \   ? l:Function(l:buffer)
+        \   : l:Function(l:buffer, copy(l:input))
 
         if type(l:result) == type(0) && l:result == 0
             " When `0` is returned, skip this item.
diff --git a/autoload/ale/util.vim b/autoload/ale/util.vim
index 90e052a..50f5adc 100644
--- a/autoload/ale/util.vim
+++ b/autoload/ale/util.vim
@@ -130,9 +130,13 @@ function! ale#util#FunctionArgCount(function) abort
     let l:Function = ale#util#GetFunction(a:function)
 
     redir => l:output
-        silent function Function
+        silent! function Function
     redir END
 
+    if !exists('l:output')
+        return 0
+    endif
+
     let l:match = matchstr(split(l:output, "\n")[0], '\v\([^)]+\)')[1:-2]
     let l:arg_list = filter(split(l:match, ', '), 'v:val !=# ''...''')