GNU bug report logs - #10416
24.0.92; #'test-completion is inconsistent with symbol hash keys in COLLECTION

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From: Aidan Kehoe <kehoea <at> parhasard.net>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 10416 <at> debbugs.gnu.org
Subject: bug#10416: 24.0.92; #'test-completion is inconsistent with symbol hash keys in COLLECTION
Date: Mon, 2 Jan 2012 00:21:23 +0000

 Ar an chéad lá de mí Eanair, scríobh Stefan Monnier: 

 > >  (try-completion "del-alist" #s(hash-table size 145 test equal rehash-size 1.5 rehash-threshold 0.8 data (del-alist hello "delay-mode-hooks" everyone "delete" everyone)))
 > >  => t ;; as expected and documented
 > 
 > >  (all-completions "del-alist" #s(hash-table size 145 test equal rehash-size 1.5 rehash-threshold 0.8 data (del-alist hello "delay-mode-hooks" everyone "delete" everyone)))
 > >  => ("del-alist") ;; as expected and documented
 > 
 > These are bugs.  The Elisp manual is pretty clear about it:
 > 
 >      If COLLECTION is a hash table, then the keys that are strings are
 >      the possible completions.  Other keys are ignored.

Also, throwing an error on encountering a symbol key (as #'test-completion
does) is not what that paragraph describes.

-- 
‘Iodine deficiency was endemic in parts of the UK until, through what has been
described as “an unplanned and accidental public health triumph”, iodine was
added to cattle feed to improve milk production in the 1930s.’
(EN Pearce, Lancet, June 2011)

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