GNU bug report logs - #17709
24.3; `tool-bar-map' seems inadaquately documented

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From: Samuel Bronson <naesten <at> gmail.com>
To: 17709 <at> debbugs.gnu.org
Subject: bug#17709: 24.3; `tool-bar-map' seems inadaquately documented
Date: Thu, 05 Jun 2014 19:09:44 -0400

So, we have this:
,----[ C-h v tool-bar-map RET ]
| tool-bar-map is a variable defined in `tool-bar.el'.
[...]
| Documentation:
| Keymap for the tool bar.
| Define this locally to override the global tool bar.
[...]
`----

But we also have this:
,----[ C-h f tool-bar-make-keymap RET ]
| tool-bar-make-keymap is a compiled Lisp function in `tool-bar.el'.
| 
| (tool-bar-make-keymap &optional IGNORE)
| 
| Generate an actual keymap from `tool-bar-map'.
| Its main job is to figure out which images to use based on the display's
| color capability and based on the available image libraries.
`----

It seems that the docs for the variable `tool-bar-map' are, at best,
completely glossing over the fact that, while perhaps technically a
keymap according to the defition in (info "(elisp) Format of Keymaps"),
the value of this variable is not actually directly usable, which
(presumably) has some special extra conditional stuff in it that the
`tool-bar-make-keymap' function filters out.

It seems like it would be good to at least MENTION the existance of such
deviations; if you'd rather not document their exact form, you could
just say what fields to expect differences in and reference the
functions `tool-bar-add-item'/`tool-bar-local-item' and
`tool-bar-add-item-from-menu'/`tool-bar-local-item-from-menu' used to
make such "keymaps".


In GNU Emacs 24.3.1 (i486-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2013-12-22 on binet, modified by Debian
Windowing system distributor `Colin Harrison', version 11.0.60900031
System Description:	Debian GNU/Linux testing (jessie)

Configured using:
 `configure '--build' 'i486-linux-gnu' '--build' 'i486-linux-gnu'
 '--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib'
 '--localstatedir=/var/lib' '--infodir=/usr/share/info'
 '--mandir=/usr/share/man' '--with-pop=yes'
 '--enable-locallisppath=/etc/emacs24:/etc/emacs:/usr/local/share/emacs/24.3/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.3/site-lisp:/usr/share/emacs/site-lisp'
 '--with-crt-dir=/usr/lib/i386-linux-gnu' '--with-x=yes'
 '--with-x-toolkit=lucid' '--with-toolkit-scroll-bars' '--without-gconf'
 '--without-gsettings' 'build_alias=i486-linux-gnu' 'CFLAGS=-g -O2
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Important settings:
  value of $LC_COLLATE: C
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Emacs-Lisp

Minor modes in effect:
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  dir-locals-mode: t
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  xterm-mouse-mode: t
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  tooltip-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
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<return> C-s a u t o l o a d s C-s C-s C-s C-s C-s 
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C-s C-s <C-home> <next> <next> <next> <next> <C-end> 
<C-home> <down> <down> <down> <down> <down> <down> 
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<down> <up> <up> <up> <up> <up> <backspace> , , <backspace> 
<backspace> <home> <end> <home> C-k S o h u l <backspace> 
<backspace> <backspace> <backspace> h o u l d n ' t 
SPC t h e r e SPC b e SPC a SPC c o n v e n i e n c 
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<down> <down> - - <up> <up> <end> <down> <down> SPC 
S y s t e m SPC I n f r o m a t <backspace> <backspace> 
<backspace> <backspace> <backspace> <backspace> f o 
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<C-home> <C-end> <C-home> <down> <down> <down> <down> 
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<next> <next> <next> <next> <next> <C-home> <C-home> 
<down> <down> <down> <down> <down> <down> <end> <down> 
<down> <down> <down> <up> <end> <up> <end> C-c C-c 
y s e <backspace> <backspace> e s <return> <down-mouse-1> 
<mouse-movement> <mouse-1> <down-mouse-1> <mouse-1> 
<down-mouse-1> <mouse-1> <help-echo> <down-mouse-1> 
<mouse-2> <help-echo> <down-mouse-1> <mouse-1> <down-mouse-1> 
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