Subject: 25.2; Cannot pass a function to imenu-generic-expression
From: Damien Cassou <[email-masked]>
To: [email-masked]
Date: Wed, 12 Apr 2017 06:43:49 +0200
List-Id: <debbugs-submit.debbugs.gnu.org>

$ emacs -Q

M-:
(setq-local imenu-generic-expression `(("Foo" "^;; .*$" 0 ,(lambda 
(item pos) (message "%s" item)))))

M-x imenu
 
This results in

  sort: Wrong type argument: number-or-marker-p, (#<marker at 72 
  in *scratch*> (lambda (item pos) (message "%s" item)))
 
In GNU Emacs 25.2.3 (x86_64-unknown-linux-gnu, GTK+ Version 
3.22.9) 
 of 2017-03-09 built on x230
Repository revision: aceac954ed29c2653e2a0eb71b899be5c916edda
Windowing system distributor 'Fedora Project', version 
11.0.11903000
Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF 
GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT 
LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS GTK3 X11
Important settings:
  value of $LANG: fr_FR.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

-- 
Damien Cassou
http://damiencassou.seasidehosting.st

"Success is the ability to go from one failure to another without
losing enthusiasm." --Winston Churchill