remove_echo_function

Arguments

Returns

The echo function which was removed, or nil if no function was removed.

Description

This function removes an echo function (Cascade DataHub echo handler) from the symbol. The echo_fn is compared to all of the current echo functions for the symbol using the comparison function eq.

Example

    Gamma> add_echo_function(#temp,#princ("echo\n"));
    (princ "echo\n")
    Gamma> write_point(#temp,28);
    t
    Gamma> next_event();
    echo
    (t t)
    Gamma> remove_echo_function(#temp,#princ("echo\n"));
    (princ "echo\n")
    Gamma> write_point(#temp,32);
    t
    Gamma> next_event();
    (t)
    Gamma> 
    		

See Also

add_echo_function