GNU bug report logs - #10951
23.3; calendar-set-mode-line can cause `wrong-type-argument number-or-marker-p' with --batch

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Adam Spiers <emacs <at> adamspiers.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 23.3; calendar-set-mode-line can cause `wrong-type-argument
	number-or-marker-p' with --batch
Date: Mon, 05 Mar 2012 23:36:35 +0000

With org-mode configured appropriately, running:

    emacs --batch --load ~/.emacs --eval '(org-mobile-push)'

causes:

    Wrong type argument: number-or-marker-p, "90"

Re-running with stack-trace-on-error set to `t' showed:

    [... snipped ...]
    Creating agendas...
    OVERVIEW
    Loading vc-git...
    Preparing diary...
      calendar-string-spread(("Diary Entries") 45 "90")
      calendar-set-mode-line("Diary Entries")
      fancy-diary-display()
    [... snipped ...]

which quickly revealed a bug in calendar-set-mode-line:

    (and (= width 10)
         (not window-system)
         (setq width (or (getenv "COLUMNS") 80)))

This code attempts to treat width numerically; however when COLUMNS is
set in the environment and window-system is nil, both of which are true
in my scenario above, width is set to a string.  Here is a suggested
fix:

--- lisp/calendar/calendar.el.orig	2012-03-05 23:15:25.000000000 +0000
+++ lisp/calendar/calendar.el	2012-03-05 23:18:55.000000000 +0000
@@ -2548,7 +2548,7 @@
     ;; If no frame exists yet, we have no idea what width to use.
     (and (= width 10)
          (not window-system)
-         (setq width (or (getenv "COLUMNS") 80)))
+         (setq width (string-to-number (or (getenv "COLUMNS") "80"))))
     (setq mode-line-format
           (if buffer-file-name
               `("-" mode-line-modified




In GNU Emacs 23.3.1 (i386-redhat-linux-gnu, GTK+ Version 2.24.7)
 of 2012-01-13 on x86-18.phx2.fedoraproject.org
Windowing system distributor `Fedora Project', version 11.0.11004000
configured using `configure  '--build=i386-redhat-linux-gnu' '--host=i386-redhat-linux-gnu' '--program-prefix=' '--disable-dependency-tracking' '--prefix=/usr' '--exec-prefix=/usr' '--bindir=/usr/bin' '--sbindir=/usr/sbin' '--sysconfdir=/etc' '--datadir=/usr/share' '--includedir=/usr/include' '--libdir=/usr/lib' '--libexecdir=/usr/libexec' '--localstatedir=/var' '--sharedstatedir=/var/lib' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--with-dbus' '--with-gif' '--with-jpeg' '--with-png' '--with-rsvg' '--with-tiff' '--with-xft' '--with-xpm' '--with-x-toolkit=gtk' 'build_alias=i386-redhat-linux-gnu' 'host_alias=i386-redhat-linux-gnu' 'CFLAGS=-DMAIL_USE_LOCKF -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i686 -mtune=atom -fasynchronous-unwind-tables''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=none
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Emacs-Lisp

Minor modes in effect:
  gpm-mouse-mode: t
  eldoc-mode: t
  global-msf-abbrev-mode: t
  diff-auto-refine-mode: t
  shell-dirtrack-mode: t
  display-time-mode: t
  recentf-mode: t
  show-paren-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
C-h i d m e m a c s <return> M-> M-< m s u b <tab> <backspace>
<backspace> <backspace> r e p o <tab> <tab> <backspace>
<backspace> <backspace> <backspace> b u g <tab> <tab> s
<return> 1 n n n <down> <down> <down> <down> <tab> <return> l
C-! c a l <return> M-b M-b M-b M-b M-b M-b M-b M-b M-b M-f M-f
<right> M-( C-/ C-M-( M-d M-d M-d M-d C-/ C-x C-s C-e <left>
<right> C-x C-e <help-echo> <down-mouse-1> <mouse-movement>
<mouse-movement> <drag-mouse-1> <help-echo> <help-echo>
<help-echo> <help-echo> <help-echo> <help-echo> C-. C-! C-g
C-h i <down> <down> <down> <down> <down> <down> <down> <down>
<down> <down> <down> <down> <down> <down> <down> <down> <down>
<down> <down> <down> <down> <down> <down> <down> <down> <down>
<down> <down> <down> <down> <down> <down> <down> <down> <down>
<down> <down> <down> <down> <down> <down> SPC SPC SPC SPC SPC
SPC SPC <next> <next> <prior> q M-x r e p o <tab> r <tab> e
<tab> <return> C-g C-M-c q M-x <up> <return>

Recent messages:
uncompressing emacs-6.gz...done
Undo! [2 times]
Saving file /home/adam/calendar.el...
Wrote /home/adam/calendar.el
Entering debugger...
Quit
Making completion list...
Quit
Entering debugger...
Back to top level.

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/home/adam/lib/emacs/GNU_Emacs/23.3/gnu/linux/pre/org-bbdb hides /usr/share/emacs/23.3/lisp/org/org-bbdb
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