From 38819aedae8a153aa7dde70bf50f3c3b97ade9aa Mon Sep 17 00:00:00 2001
From: Kevin MacMartin <prurigro@gmail.com>
Date: Tue, 28 Oct 2014 14:28:04 -0400
Subject: [PATCH] Redetect filetype after saving as new name + wrap autocmd
 with check

---
 vim/config/settings.vim | 28 ++++++++++++++++++----------
 1 file changed, 18 insertions(+), 10 deletions(-)

diff --git a/vim/config/settings.vim b/vim/config/settings.vim
index 8921781..ccc8ef0 100644
--- a/vim/config/settings.vim
+++ b/vim/config/settings.vim
@@ -84,17 +84,25 @@
         set timeout timeoutlen=500 "how long before timing out for mappings
         set ttimeout ttimeoutlen=100 "how long before timing out for terminal key codes
 
-        "enable the auto-creation of missing folders in a save path
-        if !exists('*s:MakeNewDir')
-            function s:MakeNewDir(fullpath, buf)
-                if empty(getbufvar(a:buf,'&buftype')) && a:fullpath!~#'\v^\w+\:\/'
-                    let dirpath=fnamemodify(a:fullpath,':h')
-                    if !isdirectory(dirpath)|call mkdir(dirpath,'p')|endif
-                endif
-            endfunction
-            augroup WriteDir
+        if has('autocmd')
+            "enable the auto-creation of missing folders in a save path
+            if !exists('*s:MakeNewDir')
+                function s:MakeNewDir(fullpath, buf)
+                    if empty(getbufvar(a:buf,'&buftype')) && a:fullpath!~#'\v^\w+\:\/'
+                        let dirpath=fnamemodify(a:fullpath,':h')
+                        if !isdirectory(dirpath)|call mkdir(dirpath,'p')|endif
+                    endif
+                endfunction
+                augroup WriteDir
+                    autocmd!
+                    autocmd BufWritePre * :call s:MakeNewDir(expand('<afile>'),+expand('<abuf>'))
+                augroup END
+            endif
+
+            "update the current filetype when a file is renamed
+            augroup RenameCheckFiletype
                 autocmd!
-                autocmd BufWritePre * :call s:MakeNewDir(expand('<afile>'),+expand('<abuf>'))
+                autocmd BufFilePost * filetype detect
             augroup END
         endif
     "}}}