Default behavior when `*print-pretty*` is `nil`

[aadcg]

(let ((*print-pretty* nil)) (print ''foo))

It should print (QUOTE FOO), but prints 'FOO instead.

[yitzchak]

Do you know where in the spec this is stated?

[Bike]

ECL also just prints 'FOO. I am unaware of anything in the standard requiring any behavior. The page on *print-pprint-dispatch* just says "The intent is that the initial value of this variable should cause `traditional' pretty printing of code."

[yitzchak]

There is an example in 22.2 that shows how to create a pprint dispatch entry for QUOTE, but its not stated that it is required. The original XP printer paper specified what was in the initial pprint dispatch table, but that didn't make it into the spec.

[aadcg]

ECL also just prints 'FOO.

Version 24.5.10 prints (QUOTE FOO) on my machine. The return value is 'FOO.

[aadcg]

The spec doesn't seem to mandate a specific behavior for QUOTE when pretty printing. Therefore, this isn't a bug (please remove the label).

SBCL, ECL and ABCL print (QUOTE FOO).

CCL defines ccl:*print-abbreviate-quote* (see Clozure/ccl#545 (comment)).

CLISP prints 'FOO.

[yitzchak]

How does the current behavior affect your application?

[aadcg]

How does the current behavior affect your application?

I opened the issue thinking that my report was a violation of the standard.

Since it's not the case, I'd suggest closing it, or keeping it open in case clasp wants to mimic the behavior of some of other implementations. Thanks.