case insensitive string match

[rahul <rahul2012@xxxxxxxxx>]

I've been using this for doing some filtering from an array:

                matched=(${(M)array:#*$patt*})

Now I need to have an option of case insensitive search. Looked through the
user's guide and other sources but I don't see a flag to ignore case. Is
there a way without changing this to use grep.

I also dont suppose approximate matching can be used here (that's only for
filename globbing, right?)

-- 
 rahul