Use separate args for stringification and memoized calls.
Use separate args for stringification and memoized calls.

Fixes #1874

Ventero/greasemonkey,Ventero/greasemonkey,the8472/greasemonkey,Martii/greasemonkey,HasClass0/greasemonkey,HasClass0/greasemonkey,the8472/greasemonkey,Martii/greasemonkey