In 2.2.0-alpha-24+ you can use space-bar to accept commands.
No need to erect any statues in my honor... ;D
The cal command now toggles the Calculator mode.
After toggling this mode on
input will be considered a mathematical expression
until the cal command is used again.
Also note that space-bar will toggle free snap when the cmd line is empty;
this is intended to help with placing dimensions.