when_echo_fns, when_exception_fns
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when_echo_fns, when_exception_fns

when_echo_fns, when_exception_fns — indicate the functions for echos or exceptions on a point.

Synopsis

when_echo_fns (symbol)
when_exception_fns (symbol)

Arguments

symbol

A point name, as a symbol.

Returns

A list of expressions to be evaluated when an echo or exception occurs on the symbol.

Example

Gamma> add_echo_function(#temp,#princ("echo\n"));
(princ "echo\n")
Gamma> add_echo_function(#temp,#temp/2);
(/ temp 2)
Gamma> when_echo_fns(#temp);
((/ temp 2) (princ "echo\n") t)
Gamma> write_point(#temp,22);
t
Gamma> next_event();
echo
(11 t t)
Gamma>

See Also

add_echo_function, add_exception_function, remove_echo_function, remove_exception_function

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