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bug#36324: 27.0.50; Error in savehist-save: (wrong-type-argument listp t


From: Michael Heerdegen
Subject: bug#36324: 27.0.50; Error in savehist-save: (wrong-type-argument listp t)
Date: Sat, 22 Jun 2019 17:29:22 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

Lars Ingebrigtsen <larsi@gnus.org> writes:

> I've now reapplied the patch, but restored the t check in the hook and
> updated the comment.

Fixed for me, thanks.

> The doc string for `read-from-minibuffer' doesn't document the t value
> for HISTORY at all -- perhaps that should also be fixed?

It's also not hardcoded AFAIK.  t is non-nil so Qminibuffer_history
isn't substituted in `read-from-minibuffer', and it's not listp so
`add-to-history' ignores it silently.  AFAIU other values V with these
properties would also work this way but still provoke the
(wrong-type-argument listp V) error.

Having some input not recorded in a history is a useful feature.  IMHO
this should be doable in an official way, and be documented.

If we don't solve this here, I can also open a new report.


Thanks,

Michael.





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