diff --git a/runtime/vimrc_example.vim b/runtime/vimrc_example.vim
index eaf3fd6..a2a891c 100644
--- a/runtime/vimrc_example.vim
+++ b/runtime/vimrc_example.vim
@@ -1,7 +1,7 @@
 " An example for a vimrc file.
 "
 " Maintainer:	Bram Moolenaar <Bram@vim.org>
-" Last change:	2006 Nov 16
+" Last change:	2008 Jun 16
 "
 " To use it, copy it to
 "     for Unix and OS/2:  ~/.vimrc
@@ -37,6 +37,10 @@
 " Don't use Ex mode, use Q for formatting
 map Q gq
 
+" CTRL-U in insert mode deletes a lot.  Use CTRL-G u to first break undo,
+" so that you can undo CTRL-U after inserting a line break.
+inoremap <C-U> <C-G>u<C-U>
+
 " In many terminal emulators the mouse works just fine, thus enable it.
 set mouse=a
 
@@ -66,8 +70,10 @@
   " When editing a file, always jump to the last known cursor position.
   " Don't do it when the position is invalid or when inside an event handler
   " (happens when dropping a file on gvim).
+  " Also don't do it when the mark is in the first line, that is the default
+  " position when opening a file.
   autocmd BufReadPost *
-    \ if line("'\"") > 0 && line("'\"") <= line("$") |
+    \ if line("'\"") > 1 && line("'\"") <= line("$") |
     \   exe "normal! g`\"" |
     \ endif
 
@@ -81,5 +87,8 @@
 
 " Convenient command to see the difference between the current buffer and the
 " file it was loaded from, thus the changes you made.
-command DiffOrig vert new | set bt=nofile | r # | 0d_ | diffthis
-	 	\ | wincmd p | diffthis
+" Only define it when not defined already.
+if !exists(":DiffOrig")
+  command DiffOrig vert new | set bt=nofile | r # | 0d_ | diffthis
+		  \ | wincmd p | diffthis
+endif