Update runtime files
diff --git a/runtime/syntax/xpm.vim b/runtime/syntax/xpm.vim
index 0667ca2..be9f387 100644
--- a/runtime/syntax/xpm.vim
+++ b/runtime/syntax/xpm.vim
@@ -1,19 +1,22 @@
 " Vim syntax file
 " Language:	X Pixmap
 " Maintainer:	Ronald Schild <rs@scutum.de>
-" Last Change:	2017 Feb 01
+" Last Change:	2021 Oct 04
 " Version:	5.4n.1
 "               Jemma Nelson added termguicolors support
+"               Dominique Pellé fixed spelling support
 
 " quit when a syntax file was already loaded
 if exists("b:current_syntax")
   finish
 endif
 
+syn spell notoplevel
+
 syn keyword xpmType		char
 syn keyword xpmStorageClass	static
 syn keyword xpmTodo		TODO FIXME XXX  contained
-syn region  xpmComment		start="/\*"  end="\*/"  contains=xpmTodo
+syn region  xpmComment		start="/\*"  end="\*/"  contains=xpmTodo,@Spell
 syn region  xpmPixelString	start=+"+  skip=+\\\\\|\\"+  end=+"+  contains=@xpmColors
 
 if has("gui_running") || has("termguicolors") && &termguicolors