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From: | Stefan Monnier |
Subject: | Re: Should nil COLLECTION element mean a "nil" candidateforcompleting-read? Alist doc. |
Date: | Tue, 21 Jul 2009 23:15:00 -0400 |
User-agent: | Gnus/5.13 (Gnus v5.13) Emacs/23.0.94 (gnu/linux) |
>> It's not a feature. > Right; it's a bug - a regression wrt Emacs 21, in fact (you admit it wasn't No. It's a change in undocumented and unsupported use-case. We sometimes try to preserve bug-compatibility, but not always. > I pose the questions: Should nil be ignored here? Should nil be > treated like the string "nil" here? If we wanted to give it a defined behavior, I'd vote for "signal an error". But until proven otherwise, I think it's not worth the trouble. Stefan
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