lib/rouge/lexers/prolog.rb in rouge_ecl-0.0.1 vs lib/rouge/lexers/prolog.rb in rouge_ecl-1.0.0

@@ -8,9 +8,14 @@
       tag 'prolog'
       aliases 'prolog'
       filenames '*.pro', '*.P', '*.prolog', '*.pl'
       mimetypes 'text/x-prolog'
 
+      def self.analyze_text(text)
+        return 0.1 if text =~ /\A\w+(\(\w+\,\s*\w+\))*\./
+        return 0.1 if text.include? ':-'
+      end
+
       state :basic do
         rule /\s+/, Text
         rule /^#.*/, Comment::Single
         rule /\/\*/, Comment::Multiline, :nested_comment