Fwd: Request for review: 8017611: Auto corrector for mistyped vm options

[Bengt Rutisson]

-------- Original Message --------
Subject: 	Request for review: 8017611: Auto corrector for mistyped vm 
options
Date: 	Tue, 25 Jun 2013 10:44:50 -0700
From: 	Tao Mao <tao.mao at oracle.com>
Organization: 	Oracle Corporation
To: 	hotspot-gc-dev at openjdk.java.net <hotspot-gc-dev at openjdk.java.net>



I'm kinda tired of mistyping VM options and figuring it out
"mentally"...let machines do it then.

changeset:
Currently, when we mistype VM options you will get the warning as following

$java -XX:+UseParalelGC -version
Unrecognized VM option 'UseParalelGC'

I think we can do one step further to interpret the user's intent and
suggest the correct VM options. Then i start to imagine that we have
something like this

$java -XX:+UseParalelGC -version
Unrecognized VM option 'UseParalelGC'
Did you mean 'UseParallelGC'?

Please refer to the wikipedia
http://en.wikipedia.org/wiki/S%C3%B8rensen%E2%80%93Dice_coefficient to
get an idea of obtaining string similarity. This new feature is based on
this theory.

webrev:
http://cr.openjdk.java.net/~tamao/8017611/webrev.00/

Please try out this patch and see if it meets some need.

Thanks.
Tao