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From: "Phillip Lord" <phillip.lord@russet.org.uk>
To: 26440@debbugs.gnu.org
Subject: bug#26440: seq-mapn fails with circular sequence
Date: Tue, 11 Apr 2017 08:12:40 -0000	[thread overview]
Message-ID: <f2e98367f212ad432bfc4fe8ac541e1a.squirrel@cloud103.planethippo.com> (raw)

On Emacs-25 circular structures cause seq-mapn not to terminate
although the documentation suggest that they should.

Consider:

    (defvar l '(a c d))
    (setq l (nconc l l))
    (seq-mapn #'cons l '(1))

This should return '((a . 1)) but actually does not terminate.

The problem is caused by call to seq-into which includes:

    (append sequence nil)

The problem does exist on trunk which does this instead:

    (if (listp sequence)
        sequence
      (append sequence nil)))








             reply	other threads:[~2017-04-11  8:12 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-11  8:12 Phillip Lord [this message]
2017-04-12  8:22 ` bug#26440: seq-mapn fails with circular sequence Nicolas Petton
2017-07-31 11:34   ` Nicolas Petton
2017-08-01 18:40     ` Nicolas Petton

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