bug#68509: 30.0.50; pcase-dolist matches backquote pattern incorrectly

[Ihor Radchenko]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

>> What about adding extra option/keyword and also showing a runtime
>> warning when pcase-dolist/pcase-let encounter something that does not
>> match the pattern?
>
> In the current use of those primitives, it's routine/normal/common for
> a pattern like `(,a ,b) to encounter lists of different length than 2,
> so a warning should be emitted only if specifically requested via an
> option/keyword.

But isn't it undocumented?

-- 
Ihor Radchenko // yantar92,
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