Merge pull request spf13#806 from zhlinh/windows_uses_ag_first

Use ag firstly for ctrlp in Windows too

Author: spf13

.vimrc

@@ -608,15 +608,15 @@
                 \ 'dir':  '\.git$\|\.hg$\|\.svn$',
                 \ 'file': '\.exe$\|\.so$\|\.dll$\|\.pyc$' }
 
-            " On Windows use "dir" as fallback command.
-            if WINDOWS()
-                let s:ctrlp_fallback = 'dir %s /-n /b /s /a-d'
-            elseif executable('ag')
+            if executable('ag')
                 let s:ctrlp_fallback = 'ag %s --nocolor -l -g ""'
             elseif executable('ack-grep')
                 let s:ctrlp_fallback = 'ack-grep %s --nocolor -f'
             elseif executable('ack')
                 let s:ctrlp_fallback = 'ack %s --nocolor -f'
+            " On Windows use "dir" as fallback command.
+            elseif WINDOWS()
+                let s:ctrlp_fallback = 'dir %s /-n /b /s /a-d'
             else
                 let s:ctrlp_fallback = 'find %s -type f'
             endif