Allow for disabling individual languages, closes #66

syntax/rnoweb.vim

@@ -1,3 +1,5 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'r-lang') == -1
+  
 " Vim syntax file
 " Language:    R noweb Files
 " Maintainer:  Johannes Ranke <jranke@uni-bremen.de>
@@ -54,3 +56,5 @@ hi def link rnowebChunkReference Delimiter
 
 let   b:current_syntax = "rnoweb"
 " vim: foldmethod=marker:
+
+endif