URL's with other protocol's not opened

If you select a link that starts with another protocol, such as https://example.com or ftp:// then mushclient'll try to open http://https://example.com which obviously fails. Perhaps you could use the standard protocol:// opener code, so you could also use things like ed2k:// and other locally defined URL's.

I also often get the URL too long error lately. Especially with all the dynamic sites nowadays links tend to grow long ;)

I have changed the limit to 512 bytes, and at present it tests the first 7 characters for "http://" and if not there, prepends it.

I have changed that to test the first 15 characters for "://" and if not there, prepends "http://" otherwise uses it as set.