Do more with $result

I just updated the riddler captcha to D6 and had a few thoughts. #281380: Riddler for D6?

Riddler uses lower case only, so it's necessary to set captcha to be case insensitive. This means that not all captcha add-on modules are truly compatible. Some probably need to be case sensitive to really work.

I thought $result['case'] = TRUE/FALSE could allow each module to set its own case preference.

Something else that could be done is to allow multiple possible solutions. $result['multiple] = TRUE/FALSE could indicate whether captcha $result['solution'] is a single possible solution or an array of possible solutions.

Then you could ask a challenge such as "Baseball is a ?" and the possible answers could be "game, sport, pastime".

If this sounds worthwhile I can make a patch.