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make-dispatch-macro-character (Function)

— Function: make-dispatch-macro-character char &optional non-terminating-p readtable t
Arguments and Values:

char—a character.

non-terminating-p—a generalized boolean. The default is false.

readtable—a readtable. The default is the current readtable.


make-dispatch-macro-character makes char be a dispatching macro character in readtable.

Initially, every character in the dispatch table associated with the char has an associated function that signals an error of type reader-error.

If non-terminating-p is true, the dispatching macro character is made a non-terminating macro character; if non-terminating-p is false, the dispatching macro character is made a terminating macro character.

 (get-macro-character #\{)  NIL, false
 (make-dispatch-macro-character #\{)  T
 (not (get-macro-character #\{))  false

The readtable is altered.

See Also:

*readtable*, set-dispatch-macro-character