rofi-sensible-terminal is invoked in the rofi default config to start a terminal. This wrapper script is necessary since there is no distribution-independent terminal launcher (but for example Debian has x-terminal-emulator). Distribution packagers are responsible for shipping this script in a way which is appropriate for the distribution.
It tries to start one of the following (in that order):
$TERMINAL(this is a non-standard variable)
Dave Davenport and contributors
Copied script from i3: Michael Stapelberg and contributors