diff --git a/autoload/zencoding.vim b/autoload/zencoding.vim
index 1f1ff03..af58b98 100644
--- a/autoload/zencoding.vim
+++ b/autoload/zencoding.vim
@@ -1,7 +1,7 @@
 "=============================================================================
 " zencoding.vim
 " Author: Yasuhiro Matsumoto <mattn.jp@gmail.com>
-" Last Change: 21-Nov-2011.
+" Last Change: 22-Nov-2011.
 
 let s:save_cpo = &cpo
 set cpo&vim
@@ -62,7 +62,7 @@ function! s:zen_parseIntoTree(abbr, type)
   endif
 
   if s:zen_isExtends(type, "html")
-    let abbr = substitute(abbr, '\([a-zA-Z][a-zA-Z0-9]*\)+\([()]\|$\)', '\="(".s:zen_getExpandos(type, submatch(1)).")".submatch(2)', 'i')
+    let abbr = substitute(abbr, '\([a-zA-Z][a-zA-Z0-9+]*\)+\([()]\|$\)', '\="(".s:zen_getExpandos(type, submatch(1)).")".submatch(2)', 'i')
     let mx = '\([+>]\|<\+\)\{-}\s*\((*\)\{-}\s*\([@#.]\{-}[a-zA-Z\!][a-zA-Z0-9:\!\-]*\|{[^}]\+}\)\(\%(\%(#{[{}a-zA-Z0-9_\-\$]\+\|#[a-zA-Z0-9_\-\$]\+\)\|\%(\[[^\]]\+\]\)\|\%(\.{[{}a-zA-Z0-9_\-\$]\+\|\.[a-zA-Z0-9_\-\$]\+\)\)*\)\%(\({[^}]\+}\)\)\{0,1}\%(\s*\*\s*\([0-9]\+\)\s*\)\{0,1}\(\%(\s*)\%(\s*\*\s*[0-9]\+\s*\)\{0,1}\)*\)'
   else
     let mx = '\([+>]\|<\+\)\{-}\s*\((*\)\{-}\s*\([@#.]\{-}[a-zA-Z\!][a-zA-Z0-9:\!\+\-]*\|{[^}]\+}\)\(\%(\%(#{[{}a-zA-Z0-9_\-\$]\+\|#[a-zA-Z0-9_\-\$]\+\)\|\%(\[[^\]]\+\]\)\|\%(\.{[{}a-zA-Z0-9_\-\$]\+\|\.[a-zA-Z0-9_\-\$]\+\)\)*\)\%(\({[^}]\+}\)\)\{0,1}\%(\s*\*\s*\([0-9]\+\)\s*\)\{0,1}\(\%(\s*)\%(\s*\*\s*[0-9]\+\s*\)\{0,1}\)*\)'