* bug#4979: 23.1.50; describe-text-properties produces *Help* buffer without back/forward buttons
@ 2009-11-19 21:23 Peter Dyballa
2009-11-24 22:24 ` Stefan Monnier
0 siblings, 1 reply; 4+ messages in thread
From: Peter Dyballa @ 2009-11-19 21:23 UTC (permalink / raw)
To: emacs-pretest-bug
Hello!
When executing describe-text-properties on some character a *Help*
buffer is created or updated with some text content, for example:
Text content at position 234:
There is an overlay here:
From 234 to 246
font-lock-face comint-highlight-prompt
There are text properties here:
field output
fontified t
front-sticky (field inhibit-line-move-field-capture)
inhibit-line-move-field-capture t
rear-nonsticky t
Similarly C-u C-x = produces a *Help* buffer without [back] and/or
[forward] buttons. No matter how often I repeat these two commands,
no button is created. But when I run describe-variable or describe-
function and a [back] button is created by them in *Help* buffer,
then describe-text-properties (or C-u C-x =) kind of inherit this
feature and create *Help* buffers with a [back] button.
Shouldn't all functions which overwrite the previous contents of
*Help* buffer also insert that [back] button?
In GNU Emacs 23.1.50.1 (powerpc-apple-darwin8.11.0, GTK+ Version 2.18.2)
of 2009-11-18 on Latsche.local
Windowing system distributor `The XFree86 Project, Inc', version
11.0.40400000
configured using `configure '--without-sound' '--without-pop' '--
with-dbus' '--with-libotf' '--with-xpm' '--with-jpeg' '--with-tiff'
'--with-gif' '--with-png' '--x-libraries=/opt/local/lib' '--x-
includes=/opt/local/include' '--enable-locallisppath=/Library/
Application Support/Emacs/calendar23:/Library/Application Support/
Emacs' 'PKG_CONFIG_PATH=/opt/local/lib/pkgconfig:/opt/local/share/
pkgconfig:/usr/local/lib/pkgconfig:/usr/lib/pkgconfig' 'CPPFLAGS=-no-
cpp-precomp' 'CFLAGS=-ggdb3 -gfull -mtraceback=full -Wno-pointer-sign
-H -pipe -fPIC -mcpu=7450 -mtune=7450 -mtune=G4 -fast -mpim-altivec -
ftree-vectorize -foptimize-register-move -freorder-blocks -fthread-
jumps -fpeephole -fno-crossjumping' 'LDFLAGS=-dead_strip -
multiply_defined suppress''
Important settings:
value of $LC_ALL: nil
value of $LC_COLLATE: nil
value of $LC_CTYPE: de_DE.UTF-8
value of $LC_MESSAGES: nil
value of $LC_MONETARY: nil
value of $LC_NUMERIC: nil
value of $LC_TIME: nil
value of $LANG: de_DE.UTF-8
value of $XMODIFIERS: nil
locale-coding-system: utf-8-unix
default enable-multibyte-characters: t
Major mode: Shell
Minor modes in effect:
shell-dirtrack-mode: t
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
blink-cursor-mode: t
global-auto-composition-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
line-number-mode: t
transient-mark-mode: t
Features:
(shadow mail-extr message ecomplete rfc822 mml mml-sec password-cache
mm-decode mm-bodies mm-encode mailcap mail-parse rfc2231 rfc2047 rfc2045
qp ietf-drums mailabbrev nnheader gnus-util netrc time-date mm-util
mail-prsvr gmm-utils mailheader canlock sha1 hex-util hashcash
mail-utils emacsbug sendmail regexp-opt pp wid-edit shell comint ring
descr-text help-mode easymenu view tooltip ediff-hook vc-hooks
lisp-float-type mwheel x-win x-dnd font-setting tool-bar dnd fontset
image fringe lisp-mode register page menu-bar rfn-eshadow timer select
scroll-bar mldrag mouse jit-lock font-lock syntax facemenu font-core
frame cham georgian utf-8-lang misc-lang vietnamese tibetan thai
tai-viet lao korean japanese hebrew greek romanian slovak czech european
ethiopic indian cyrillic chinese case-table epa-hook jka-cmpr-hook help
simple abbrev loaddefs button minibuffer faces cus-face text-properties
overlay md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote make-network-process dbusbind
font-render-setting system-font-setting gtk x-toolkit x multi-tty emacs)
--
Greetings
Pete
Give a man a fish, and you've fed him for a day. Teach him to fish,
and you've depleted the lake.
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#4979: 23.1.50; describe-text-properties produces *Help* buffer without back/forward buttons
2009-11-19 21:23 bug#4979: 23.1.50; describe-text-properties produces *Help* buffer without back/forward buttons Peter Dyballa
@ 2009-11-24 22:24 ` Stefan Monnier
2009-11-25 22:35 ` Peter Dyballa
0 siblings, 1 reply; 4+ messages in thread
From: Stefan Monnier @ 2009-11-24 22:24 UTC (permalink / raw)
To: Peter Dyballa; +Cc: 4979
> Shouldn't all functions which overwrite the previous contents of *Help*
> buffer also insert that [back] button?
Yes. I've installed a change which should fix it for
describe-text-properties and describe-char. Please confirm that it
solves your problems,
Stefan
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#4979: 23.1.50; describe-text-properties produces *Help* buffer without back/forward buttons
2009-11-24 22:24 ` Stefan Monnier
@ 2009-11-25 22:35 ` Peter Dyballa
2021-07-18 18:48 ` Lars Ingebrigtsen
0 siblings, 1 reply; 4+ messages in thread
From: Peter Dyballa @ 2009-11-25 22:35 UTC (permalink / raw)
To: Stefan Monnier; +Cc: 4979
Am 24.11.2009 um 23:24 schrieb Stefan Monnier:
>> Shouldn't all functions which overwrite the previous contents of
>> *Help*
>> buffer also insert that [back] button?
>
> Yes. I've installed a change which should fix it for
> describe-text-properties and describe-char. Please confirm that it
> solves your problems,
>
Yes, I can confirm that describe-text-properties now works as
describe-function or describe-variable.
But – there seem to be other describe-<whatever> functions which do
not work like these. Some of these functions produce a [back] key
only when they are repeated (describe-character-set for example,
describe-categories, describe-face, describe-fontset) and not when
they overwrite the contents of the *Help* buffer. Some never seem to
create this navigation element:
describe-bindings-internal
describe-buffer-case-table
describe-coding-system
describe-current-coding-system
describe-current-display-table
describe-font
The functions describe-minor-mode-from-indicator and describe-minor-
mode do not show any possible completions...
--
Greetings
Pete <\
_\ O _
|o \ _\\_/-\='
_____________(_)|-(_) (_)___________________________________
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#4979: 23.1.50; describe-text-properties produces *Help* buffer without back/forward buttons
2009-11-25 22:35 ` Peter Dyballa
@ 2021-07-18 18:48 ` Lars Ingebrigtsen
0 siblings, 0 replies; 4+ messages in thread
From: Lars Ingebrigtsen @ 2021-07-18 18:48 UTC (permalink / raw)
To: Peter Dyballa; +Cc: Stefan Monnier, 4979
Peter Dyballa <Peter_Dyballa@Freenet.DE> writes:
>>> Shouldn't all functions which overwrite the previous contents of
>>> *Help*
>>> buffer also insert that [back] button?
>>
>> Yes. I've installed a change which should fix it for
>> describe-text-properties and describe-char. Please confirm that it
>> solves your problems,
>
> Yes, I can confirm that describe-text-properties now works as
> describe-function or describe-variable.
>
> But – there seem to be other describe-<whatever> functions which do
> not work like these. Some of these functions produce a [back] key only
> when they are repeated (describe-character-set for example,
> describe-categories, describe-face, describe-fontset) and not when
> they overwrite the contents of the *Help* buffer. Some never seem to
> create this navigation element:
>
> describe-bindings-internal
> describe-buffer-case-table
> describe-coding-system
> describe-current-coding-system
> describe-current-display-table
> describe-font
I tried the commands here in Emacs 28, and they all seemed to produce a
[back] button for me, so I'm going to go ahead and guess that this has
been fixed in the decade since it was reported, and I'm closing this bug
report.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
^ permalink raw reply [flat|nested] 4+ messages in thread
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2009-11-19 21:23 bug#4979: 23.1.50; describe-text-properties produces *Help* buffer without back/forward buttons Peter Dyballa
2009-11-24 22:24 ` Stefan Monnier
2009-11-25 22:35 ` Peter Dyballa
2021-07-18 18:48 ` Lars Ingebrigtsen
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