Set coding system for keyboard input on TERMINAL to CODING-SYSTEM.
For a list of possible values of CODING-SYSTEM, use M-x list-coding-systems.
The default is determined by the selected language environment
or by the previous use of this command.
If CODING-SYSTEM is nil or the coding-type of CODING-SYSTEM is
`raw-text', the decoding of keyboard input is disabled.
TERMINAL may be a terminal object, a frame, or nil for the
selected frame's terminal. The setting has no effect on graphical terminals.