use :plain for unknown output file types

korny · korny · commit 82fdb13ddcb6 · 2013-06-10T06:52:50.000+02:00
diff --git a/bin/coderay b/bin/coderay
@@ -125,7 +125,7 @@ when 'highlight', nil
     end
     
     if output_file
-      output_format ||= CodeRay::FileType[output_file]
+      output_format ||= CodeRay::FileType[output_file] || :plain
     else
       output_format ||= :terminal
     end
