Use full path in undofile(). Updated docs.
diff --git a/runtime/doc/pi_vimball.txt b/runtime/doc/pi_vimball.txt
index 4928d11..8eaa838 100644
--- a/runtime/doc/pi_vimball.txt
+++ b/runtime/doc/pi_vimball.txt
@@ -197,7 +197,7 @@
Apr 18, 2008 * RmVimball command is now protected by saving and
restoring settings -- in particular, acd was
causing problems as reported by Zhang Shuhan
- 24 : Nov 15, 2007 * |g:vimball_path_escape| used by s:Path() to
+ 24 : Nov 15, 2007 * g:vimball_path_escape used by s:Path() to
prevent certain characters from causing trouble
22 : Mar 21, 2007 * uses setlocal instead of set during BufEnter
21 : Nov 27, 2006 * (tnx to Bill McCarthy) vimball had a header