updated for version 7.0158
diff --git a/runtime/tutor/tutor.vim b/runtime/tutor/tutor.vim
index 8621ae2..29eda4c 100644
--- a/runtime/tutor/tutor.vim
+++ b/runtime/tutor/tutor.vim
@@ -1,6 +1,6 @@
 " Vim tutor support file
 " Author: Eduardo F. Amatria <eferna1@platea.pntic.mec.es>
-" Last Change:	2005 Mar 15
+" Last Change:	2005 Oct 16
 
 " This small source file is used for detecting if a translation of the
 " tutor file exist, i.e., a tutor.xx file, where xx is the language.
@@ -83,6 +83,15 @@
   endif
 endif
 
+" The Turkish tutor is available in two encodings, guess which one to use
+if s:ext =~? '\.tr'
+  if &enc == "utf-8"
+    let s:ext = ".tr.utf-8"
+  elseif &enc == "iso-8859-9"
+    let s:ext = ".tr.iso9"
+  endif
+endif
+
 " The Greek tutor is available in two encodings, guess which one to use
 if s:ext =~? '\.gr' && &enc =~ 737
   let s:ext = ".gr.cp737"