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bug#25558: Spurious warnings with variables mentioned only pcase guard p
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From: |
npostavs |
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Subject: |
bug#25558: Spurious warnings with variables mentioned only pcase guard patterns |
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Date: |
Fri, 27 Jan 2017 19:24:41 -0500 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux) |
forcemerge 16771 25558
quit
Clément Pit--Claudel <clement.pitclaudel@live.com> writes:
> The following causes a warning (unused variable 'b'):
>
> (pcase '(1 2) ((and `(,a ,b) (guard (equal a b))) a))
>
> This is due to pcase let-binding 'a' twice; once around the guard test
> ('(equal a b)'), and once around the body ('a').
This was reported as #16771. It seems difficult to fix, unfortunately.