updated for version 7.0c
diff --git a/runtime/syntax/help.vim b/runtime/syntax/help.vim
index 26f5dee..7ce8cde 100644
--- a/runtime/syntax/help.vim
+++ b/runtime/syntax/help.vim
@@ -1,7 +1,7 @@
" Vim syntax file
" Language: Vim help file
" Maintainer: Bram Moolenaar (Bram@vim.org)
-" Last Change: 2005 Sep 01
+" Last Change: 2006 Mar 26
" Quit when a (custom) syntax file was already loaded
if exists("b:current_syntax")
@@ -106,7 +106,7 @@
syn match helpError "\t[* ]Error\t\+[a-z].*"
syn match helpTodo "\t[* ]Todo\t\+[a-z].*"
-syn match helpURL `\v<(((https?|ftp|gopher)://|(mailto|file|news):)[^' <>"]+|(www|web|w3)[a-z0-9_-]*\.[a-z0-9._-]+\.[^' <>"]+)[a-z0-9/]`
+syn match helpURL `\v<(((https?|ftp|gopher)://|(mailto|file|news):)[^' <>"]+|(www|web|w3)[a-z0-9_-]*\.[a-z0-9._-]+\.[^' <>"]+)[a-zA-Z0-9/]`
" Additionally load a language-specific syntax file "help_ab.vim".
let s:i = match(expand("%"), '\.\a\ax$')