GNU bug report logs - #15097
24.3.50; json.el can't encode lists of lists

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Rolando Pereira <rolando_pereira <at> sapo.pt>
Subject: bug#15097: closed (Wontfix, apparently)
Date: Sun, 23 Mar 2014 06:41:04 +0000

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Your bug report

#15097: 24.3.50; json.el can't encode lists of lists

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 15097 <at> debbugs.gnu.org.

-- 
15097: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=15097
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Daniel Colascione <dancol <at> dancol.org>
To: 15097-done <at> debbugs.gnu.org
Subject: Wontfix, apparently
Date: Sat, 22 Mar 2014 23:40:19 -0700

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Wontfix according to discussion

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From: Rolando Pereira <rolando_pereira <at> sapo.pt>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.3.50; json.el can't encode lists of lists
Date: Wed, 14 Aug 2013 23:44:36 +0100

Hello all,

The function `json-encode' can't encode a list thats composed only of other
lists, i.e. the following doesn't work:

    (json-encode '((1 2 3))) => Error: (json-key-format 1)

If I had an extra "nil" in the topmost list `json-encode' then it works
fine:

    (json-encode '((1 2 3) nil)) => "[[1,2,3],null]"

However if I replace the `nil' with another list then I get the same
error:

    (json-encode '((1 2 3) (4))) => Error: (json-key-format 1)

Here's a small ERT test that should trigger the bug:

    (ert-deftest json-encode-list-of-lists-test ()
      (ert-should (string= (json-encode '(1 2 3)) "[1,2,3]"))              ; works
      (ert-should (string= (json-encode '((1) 2 3)) "[[1],2,3]"))          ; works
      (ert-should (string= (json-encode '((1 2 3))) "[[1,2,3]]"))          ; doesn't work
      (ert-should (string= (json-encode '((1 2 3) nil)) "[[1,2,3],null]")) ; works
      (ert-should (string= (json-encode '((1 2 3) (4))) "[[1,2,3],[4]]"))  ; doesn't work
      )


Best regards,
Rolando Pereira

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