Re: `unreadablep'

[Po Lu]

Ihor Radchenko <yantar92@gmail.com> writes:

> I can see a use of adding extra argument to prin1. If the argument is
> set, prin1 errors when attempting to print unreadable object or
> alternatively prints nil (or other symbol) instead of the unreadable
> object.

Why an extra argument, and not a variable, say,
`throw-printing-unreadably'?  There are many callers of prin1 that could
benefit from this.