I think it requires some wrapper macros calling surround_with with the appropriate args.
You can add them to your vusrmacs.e file. Search for 'vusrmacs' in the forum howto deal with it.
Simple example:
#include "slick.sh"
_command void joon_surround_with_something() name_info (','VSARG2_READ_ONLY|VSARG2_REQUIRES_EDITORCTL)
{
_str swalias = "something";
int status=surround_with(swalias);
if (status) message("Can't apply alias '" swalias "' - status = " status);
}
However, maybe not worth the effort.
I'm using key bindings to just 'un|surround-with' due to lack of available and useful key combinations ...
Good luck,
HS2