Now Poderosa supports UTF8 style extended mouse tracking protocol,
but it does not works if the locale encoding isn't UTF-8, it won't report positions past 50x95.
So I write a patch(https://gist.github.com/2875648), it supports more better extended mouse tracking
modes called as urxvt / SGR style.
The detail of them are explained in xterm's manual:
Hope you find this useful :)
I will check your patch this weekend.
This patch looks really useful. These protocol extension are getting widely used by applications, e.g. vim, emacs, midnight commander etc…
A minor typo in the patch:
case "1015": // Enable UTF8 Extended Mouse Mode
case "1015": // Enable Urxvt Extended Mouse Mode
(this extension has nothing to do with UTF-8)