diff --git a/runtime/syntax/cs.vim b/runtime/syntax/cs.vim
index 99844b9..948b125 100644
--- a/runtime/syntax/cs.vim
+++ b/runtime/syntax/cs.vim
@@ -1,7 +1,7 @@
 " Vim syntax file
 " Language:	C#
 " Maintainer:	Johannes Zellner <johannes@zellner.org>
-" Last Change:	Tue, 09 Mar 2004 14:32:13 CET
+" Last Change:	Mi, 13 Apr 2005 22:52:57 CEST
 " Filenames:	*.cs
 " $Id$
 "
@@ -92,7 +92,7 @@
 " unicode characters
 syn match   csUnicodeNumber	+\\\(u\x\{4}\|U\x\{8}\)+ contained contains=csUnicodeSpecifier
 syn match   csUnicodeSpecifier	+\\[uU]+ contained
-syn region  csVerbatimString	start=+@"+ end=+"+ end=+$+ contains=csVerbatimSpec
+syn region  csVerbatimString	start=+@"+ end=+"+ end=+$+ skip=+""+ contains=csVerbatimSpec
 syn match   csVerbatimSpec	+@"+he=s+1 contained
 syn region  csString		start=+"+  end=+"+ end=+$+ contains=csSpecialChar,csSpecialError,csUnicodeNumber
 syn match   csCharacter		"'[^']*'" contains=csSpecialChar,csSpecialCharError
diff --git a/runtime/syntax/objc.vim b/runtime/syntax/objc.vim
index 5a965a0..1c296dd 100644
--- a/runtime/syntax/objc.vim
+++ b/runtime/syntax/objc.vim
@@ -3,7 +3,7 @@
 " Maintainer:	    Kazunobu Kuriyama <kazunobu.kuriyama@nifty.com>
 " Ex-maintainer:    Anthony Hodsdon <ahodsdon@fastmail.fm>
 " First Author:	    Valentino Kyriakides <1kyriaki@informatik.uni-hamburg.de>
-" Last Change:	    2004 May 20
+" Last Change:	    2005 Apr 13
 
 " For version 5.x: Clear all syntax items
 " For version 6.x: Quit when a syntax file was already loaded
@@ -30,8 +30,9 @@
 
 " ObjC keywords, types, type qualifiers etc.
 syn keyword objcStatement	self super _cmd
-syn keyword objcType		id Class SEL IMP BOOL nil Nil
+syn keyword objcType		id Class SEL IMP BOOL
 syn keyword objcTypeModifier	bycopy in out inout oneway
+syn keyword objcConstant	nil Nil
 
 " Match the ObjC #import directive (like C's #include)
 syn region objcImported display contained start=+"+  skip=+\\\\\|\\"+  end=+"+
@@ -98,6 +99,7 @@
   HiLink objcString		cString
   HiLink objcSpecial		Special
   HiLink objcProtocol		None
+  HiLink objcConstant		cConstant
 
   delcommand HiLink
 endif
diff --git a/runtime/syntax/xml.vim b/runtime/syntax/xml.vim
index af6c626..288ea54 100644
--- a/runtime/syntax/xml.vim
+++ b/runtime/syntax/xml.vim
@@ -3,7 +3,7 @@
 " Maintainer:	Johannes Zellner <johannes@zellner.org>
 "		Author and previous maintainer:
 "		Paul Siegmann <pauls@euronet.nl>
-" Last Change:	Fri, 04 Jun 2004 10:41:54 CEST
+" Last Change:	Mi, 13 Apr 2005 22:40:09 CEST
 " Filenames:	*.xml
 " $Id$
 
@@ -58,8 +58,8 @@
 "
 " <tag foo.attribute = "value">
 "                      ^^^^^^^
-syn region  xmlString contained start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=xmlEntity display
-syn region  xmlString contained start=+'+ skip=+\\\\\|\\'+ end=+'+ contains=xmlEntity display
+syn region  xmlString contained start=+"+ end=+"+ contains=xmlEntity display
+syn region  xmlString contained start=+'+ end=+'+ contains=xmlEntity display
 
 
 " punctuation (within attributes) e.g. <tag xml:foo.attribute ...>
@@ -233,7 +233,7 @@
 
 endif
 
-syn keyword xmlTodo         contained TODO FIXME XXX display
+syn keyword xmlTodo         contained TODO FIXME XXX
 syn match   xmlCommentError contained "[^><!]"
 syn region  xmlCommentPart
     \ start=+--+