[J3] Should defined input subroutine be called for a NULL value in the List-directed input?

Van Snyder van.snyder at sbcglobal.net
Sat Aug 30 17:26:27 UTC 2025


On Thu, 2025-08-28 at 20:07 +0000, Daniel Chen via J3 wrote:
> My view on this is that the defined input routine should not be
> called. Given that a null value in input does NOT cause definition of
> the corresponding effective item, I see no plausible way that the
> routine could be called. I could not find explicit wording in the
> standard on this, however.
> Steve
This seems like something that ought to be clarified, probably by an
interp.

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