bug#33150: 27.0.50; defun, keyword option

bug#33150: 27.0.50; defun, keyword option

[濱田和明]

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(defun test-f (&key a b)
  (or a b))
-> test-f
(test-f :a 1)
There happen an error: (wrong-number-of-arguments (lambda (&key a b) (or
a b)) 2)
I am expecting the return value is 1.



In GNU Emacs 27.0.50 (build 1, x86_64-w64-mingw32)
 of 2018-10-20 built on INTELLIFROG
Repository revision: 32e411943d3f1d1546bfcb1aad8c4d4cd28857d6
Windowing system distributor 'Microsoft Corp.', version 10.0.17134
System Description: Microsoft Windows 10 Home (v10.0.1803.17134.345)

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Entering debugger...
Mark set
Back to top level
Making completion list...

Configured using:
 'configure --prefix=/usr/local/share/emacs
 --exec-prefix=/usr/local/share/emacs --with-sound=no
 --with-x-toolkit=no --with-toolkit-scroll-bars --without-lcms2
 --without-libsystemd --without-imagemagick --without-json
 --without-xaw3d --without-xim --with-zlib --with-w32 --without-gpm
 --without-dbus --without-gsettings --without-selinux
 CC=/mingw64/bin/gcc PKG_CONFIG_PATH=/mingw64/lib/pkgconfig'

Configured features:
XPM JPEG TIFF GIF PNG RSVG NOTIFY ACL GNUTLS LIBXML2 ZLIB
TOOLKIT_SCROLL_BARS THREADS GMP

Important settings:
  value of $LANG: ENG
  locale-coding-system: cp932

Major mode: Lisp Interaction

Minor modes in effect:
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  auto-composition-mode: t
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  auto-compression-mode: t
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  transient-mark-mode: t

Load-path shadows:
None found.

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Memory information:
((conses 16 102756 9568)
 (symbols 48 20419 1)
 (strings 32 31376 2011)
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bug#33150: 27.0.50; defun, keyword option

[Noam Postavsky]

tags 33150 notabug
close 33150
quit

濱田和明 <hmd24kaz@gmail.com> writes:

> (defun test-f (&key a b)
>   (or a b))
> -> test-f
> (test-f :a 1)
> There happen an error: (wrong-number-of-arguments (lambda (&key a b) (or
> a b)) 2)
> I am expecting the return value is 1.

You're looking for cl-defun, plain Emacs Lisp defun doesn't support &key
(so you defined a function of three args, where the first arg is called
"&key").