Opera

It is possible to add trusted protocols that can be opened in an external application.

Opera for UNIX (Linux, Solaris, FreeBSD) supports the following parameters for trusted protocols in Tools > Preferences > Advanced > Programs:

• %u - Replace with address
• %v - Replace with address but removing relative name or trailing "/"
• %U - Replace with full address (protocol in front)
• %V - Replace with full address but removing relative name or trailing "/" (protocol in front)

Notes:

• Only one parameter can be used at a time
• If no parameter is used, Opera will default to %U

These parameters are not supported by Opera for other platforms.