My Reimplementation of the default sublime command "switch_file" This implementation sets focus on the requesed file if it is in another file group instead of opening it again in the current file group
Add this to sublime-keymap to bind to "alt+o" { "keys": ["alt+o"], "command": "my_switch_file", "args": {"extensions": ["cpp", "cxx", "cc", "c", "hpp", "hxx", "hh", "h", "ipp", "inl", "m", "mm"]} }