GNU bug report logs - #22961
The read function does not support a lambda argument

Previous Next

Full log

View this message in rfc822 format

From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Mihai Călin Bazon <mihai.bazon <at> gmail.com>
Subject: bug#22961: closed (Re: bug#22961: The read function does not
 support a lambda argument)
Date: Wed, 09 Mar 2016 18:47:02 +0000

[Message part 1 (text/plain, inline)]

Your bug report

#22961: The read function does not support a lambda argument

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 22961 <at> debbugs.gnu.org.

-- 
22961: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=22961
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]

From: Andreas Schwab <schwab <at> linux-m68k.org>
To: Mihai Călin Bazon <mihai.bazon <at> gmail.com>
Cc: 22961-done <at> debbugs.gnu.org
Subject: Re: bug#22961: The read function does not support a lambda argument
Date: Wed, 09 Mar 2016 19:46:41 +0100

Should be fixed in commit 711ca36.

Andreas.

-- 
Andreas Schwab, schwab <at> linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

[Message part 3 (message/rfc822, inline)]

From: Mihai Călin Bazon <mihai.bazon <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: The read function does not support a lambda argument
Date: Wed, 9 Mar 2016 10:37:28 +0200

[Message part 4 (text/plain, inline)]

Example, I eval this in the scratch buffer (with lexical-binding set true):

    (read (let ((str "TEST")
                (pos 0)
                (prev nil))
            (lambda (ch)
              (cond
                (ch (push ch prev))
                (prev (pop prev))
                ((< pos (length str))
                 (prog1 (aref str pos)
                   (setq pos (1+ pos))))))))

According to the docs [1] an input stream can be a function.  I would
expect the above to return the symbol TEST, but instead I get an error
("end of file during parsing").

[1]
http://www.gnu.org/software/emacs/manual/html_node/elisp/Input-Streams.html#Input-Streams

-- 
Mihai Bazon,
http://lisperator.net/

[Message part 5 (text/html, inline)]

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.