Updated runtime files. Remove HiLink commands.
diff --git a/runtime/syntax/m4.vim b/runtime/syntax/m4.vim
index 8325405..6f229ea 100644
--- a/runtime/syntax/m4.vim
+++ b/runtime/syntax/m4.vim
@@ -37,21 +37,19 @@
" Define the default highlighting.
" Only when an item doesn't have highlighting yet
-command -nargs=+ HiLink hi def link <args>
-HiLink m4Delimiter Delimiter
-HiLink m4Comment Comment
-HiLink m4Function Function
-HiLink m4Keyword Keyword
-HiLink m4Special Special
-HiLink m4String String
-HiLink m4Statement Statement
-HiLink m4Preproc PreProc
-HiLink m4Type Type
-HiLink m4Special Special
-HiLink m4Variable Special
-HiLink m4Constants Constant
-HiLink m4Builtin Statement
-delcommand HiLink
+hi def link m4Delimiter Delimiter
+hi def link m4Comment Comment
+hi def link m4Function Function
+hi def link m4Keyword Keyword
+hi def link m4Special Special
+hi def link m4String String
+hi def link m4Statement Statement
+hi def link m4Preproc PreProc
+hi def link m4Type Type
+hi def link m4Special Special
+hi def link m4Variable Special
+hi def link m4Constants Constant
+hi def link m4Builtin Statement
let b:current_syntax = "m4"