Greetings,

When running a JS target, if an unknown function is called, would it be possible to say something like:

Error: call to unknown function XYZ

Rather than:

/home/blake/z/gambit/fib.js:348
    pc = pc();
         ^
TypeError: undefined is not a function
    at gambit_trampoline (/home/blake/z/gambit/fib.js:348:10)
    ......


Thanks.

Blake McBride