Cause procedure to be "traced", that is debugging output will
be written to the standard error port every time procedure
is called, with the parameters and return value.
Note that Kawa will normally assume that a procedure defined with
the procedure-defining variant of define is constant,
and so it might be inlined:
(define (ff x) (list x x))
(trace ff) ;; probably won't work
(ff 3) ;; not traced
It works if you specify the --no-inline flag to Kawa.
Alternatively, you can use the variable-defining variant of define:
#|kawa:1|# (define ff (lambda (x) name: 'ff (list x x)))
#|kawa:2|# (trace ff) ;; works
#|kawa:3|# (ff 3)
call to ff (3)
return from ff => (3 3)
(3 3)
Note the use of the name: procedure property to give the
anonymous lambda a name.
