Initial class construction

Git/usr/share/vim/vim81/syntax/htmlm4.vim

@@ -0,0 +1,31 @@
+" Vim syntax file
+" Language:	HTML and M4
+" Maintainer:	Claudio Fleiner <claudio@fleiner.com>
+" URL:		http://www.fleiner.com/vim/syntax/htmlm4.vim
+" Last Change:	2001 Apr 30
+
+" quit when a syntax file was already loaded
+if exists("b:current_syntax")
+  finish
+endif
+
+" we define it here so that included files can test for it
+if !exists("main_syntax")
+  let main_syntax='htmlm4'
+endif
+
+runtime! syntax/html.vim
+unlet b:current_syntax
+syn case match
+
+runtime! syntax/m4.vim
+
+unlet b:current_syntax
+syn cluster htmlPreproc add=@m4Top
+syn cluster m4StringContents add=htmlTag,htmlEndTag
+
+let b:current_syntax = "htmlm4"
+
+if main_syntax == 'htmlm4'
+  unlet main_syntax
+endif