Check if the key for a normal game operation is pressed by using the function, regardless of what that key might be mapped to in Settings.xml — basically, (uiIsKeyPressed 'ThrustForward) or along those lines.

george moromisato 5 Jun 2020:

Implemented in 1.9 Beta 2 as follows:

(uiIsKeyPressed "command:ThrustForward")

That will prevent confusion with key names.