GNU bug report logs - #65554
30.0.50; help-echo string for truncated tab-bar names is not viewable

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

From: Visuwesh <visuweshm <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 30.0.50; help-echo string for truncated tab-bar names is not viewable
Date: Sun, 27 Aug 2023 00:47:26 +0530

If you set tab-bar-tab-name-function to use tab-bar-tab-name-truncated,
the latter function sets the help-echo string of the tab-bar name to the
full name however, tab-bar--format-tab which is used by
tab-bar-format-tabs overrides this help-echo string with "Current tab"
and "Click to visit tab".  If I remove :help plist items from
tab-bar--format-tab, then I don't get the help-echo string that was set
by tab-bar-tab-name-truncated but what the tab looks like in Emacs.

To reproduce,

    1. emacs -Q
    2. Evaluate
       (setq tab-bar-tab-name-function #'tab-bar-tab-name-truncated
             tab-bar-tab-name-truncated-max 3)
    3. C-x t n to clone the tab.
    4. Hover over the tabs and observe the help-echo say "Current tab"
       and "Click to visit tab".
    5. Redefine tab-bar--format-tab to exclude these strings by
       commenting out the :help lines, switch tabs to reset the cache,
       and observe the help-echo strings again.


In GNU Emacs 30.0.50 (build 15, x86_64-pc-linux-gnu, X toolkit, Xaw
 scroll bars) of 2023-08-26 built on astatine
Repository revision: bfafc405fe4e2570dd40c6d6e3ef81110ab4728a
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101008
System Description: Debian GNU/Linux trixie/sid

Configured using:
 'configure --with-sound=alsa --with-x-toolkit=lucid --with-json
 --without-xaw3d --without-gconf --without-libsystemd --without-cairo'
Configured features:
ACL DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG JSON
LIBOTF LIBSELINUX LIBXML2 MODULES NOTIFY INOTIFY PDUMPER PNG RSVG
SECCOMP SOUND SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS WEBP X11 XDBE XFT
XIM XINPUT2 XPM LUCID ZLIB
Important settings:
  value of $LC_MONETARY: ta_IN.UTF-8
  value of $LC_NUMERIC: ta_IN.UTF-8
  value of $LANG: en_GB.UTF-8
  locale-coding-system: utf-8-unix

Major mode: ELisp/l

Minor modes in effect:
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  outline-minor-mode: t
  recentf-mode: t
  server-mode: t
  paredit-mode: t
  eros-mode: t
  flymake-mode: t
  pdf-occur-global-minor-mode: t
  vz/random-frame-background-mode: t
  minibuffer-depth-indicate-mode: t
  repeat-mode: t
  display-time-mode: t
  display-battery-mode: t
  delete-selection-mode: t
  xterm-mouse-mode: t
  straight-use-package-mode: t
  straight-package-neutering-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  show-paren-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  use-hard-newlines: t
  tab-bar-history-mode: t
  tab-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  undelete-frame-mode: t
  transient-mark-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  abbrev-mode: t

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Features:
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Message #8 received at 65554 <at> debbugs.gnu.org (full text, mbox):

From: Juri Linkov <juri <at> linkov.net>
To: Visuwesh <visuweshm <at> gmail.com>
Cc: 65554 <at> debbugs.gnu.org
Subject: Re: bug#65554: 30.0.50; help-echo string for truncated tab-bar
 names is not viewable
Date: Sun, 27 Aug 2023 19:11:41 +0300

> If you set tab-bar-tab-name-function to use tab-bar-tab-name-truncated,
> the latter function sets the help-echo string of the tab-bar name to the
> full name

Actually the help-echo string with the full name is not viewable
even if you remove the :help lines from tab-bar--format-tab.

I propose to move truncating the name from
tab-bar-tab-name-function to
tab-bar-tab-name-format-function.

tab-bar-tab-name-format-function was added later, so initially
it was possible to implement truncation only in
tab-bar-tab-name-function.

> however, tab-bar--format-tab which is used by
> tab-bar-format-tabs overrides this help-echo string with "Current tab"
> and "Click to visit tab".  If I remove :help plist items from
> tab-bar--format-tab, then I don't get the help-echo string that was set
> by tab-bar-tab-name-truncated but what the tab looks like in Emacs.

When truncation will be in tab-bar-tab-name-format-function
then the useless help-echo strings in tab-bar--format-tab
could be replaced with help strings that display the full names.

Message #11 received at 65554 <at> debbugs.gnu.org (full text, mbox):

From: Visuwesh <visuweshm <at> gmail.com>
To: Juri Linkov <juri <at> linkov.net>
Cc: 65554 <at> debbugs.gnu.org
Subject: Re: bug#65554: 30.0.50; help-echo string for truncated tab-bar
 names is not viewable
Date: Sun, 27 Aug 2023 22:00:13 +0530

[ஞாயிறு ஆகஸ்ட் 27, 2023] Juri Linkov wrote:

>> If you set tab-bar-tab-name-function to use tab-bar-tab-name-truncated,
>> the latter function sets the help-echo string of the tab-bar name to the
>> full name
>
> Actually the help-echo string with the full name is not viewable
> even if you remove the :help lines from tab-bar--format-tab.
>
> I propose to move truncating the name from
> tab-bar-tab-name-function to
> tab-bar-tab-name-format-function.

Correct me if I'm wrong, isn't tab-bar-tab-name-function indirectly used
by tab-bar-tab-name-format-function?  If that is the case, shouldn't the
help-echo string survive once :help lines are removed from
tab-bar--format-tab?

Message #14 received at 65554 <at> debbugs.gnu.org (full text, mbox):

From: Juri Linkov <juri <at> linkov.net>
To: Visuwesh <visuweshm <at> gmail.com>
Cc: 65554 <at> debbugs.gnu.org
Subject: Re: bug#65554: 30.0.50; help-echo string for truncated tab-bar
 names is not viewable
Date: Sun, 27 Aug 2023 19:55:09 +0300

>>> If you set tab-bar-tab-name-function to use tab-bar-tab-name-truncated,
>>> the latter function sets the help-echo string of the tab-bar name to the
>>> full name
>>
>> Actually the help-echo string with the full name is not viewable
>> even if you remove the :help lines from tab-bar--format-tab.
>>
>> I propose to move truncating the name from
>> tab-bar-tab-name-function to
>> tab-bar-tab-name-format-function.
>
> Correct me if I'm wrong, isn't tab-bar-tab-name-function indirectly used
> by tab-bar-tab-name-format-function?  If that is the case, shouldn't the
> help-echo string survive once :help lines are removed from
> tab-bar--format-tab?

The help-echo string survives, but it is not displayed by the
current implementation.  So you can't see even the help string
"Click to close tab" on the tab-bar-close-button.

Message #17 received at 65554 <at> debbugs.gnu.org (full text, mbox):

From: Juri Linkov <juri <at> linkov.net>
To: Visuwesh <visuweshm <at> gmail.com>
Cc: 65554 <at> debbugs.gnu.org
Subject: Re: bug#65554: 30.0.50; help-echo string for truncated tab-bar
 names is not viewable
Date: Mon, 28 Aug 2023 09:53:38 +0300

>> however, tab-bar--format-tab which is used by
>> tab-bar-format-tabs overrides this help-echo string with "Current tab"
>> and "Click to visit tab".  If I remove :help plist items from
>> tab-bar--format-tab, then I don't get the help-echo string that was set
>> by tab-bar-tab-name-truncated but what the tab looks like in Emacs.
>
> When truncation will be in tab-bar-tab-name-format-function
> then the useless help-echo strings in tab-bar--format-tab
> could be replaced with help strings that display the full names.

Now the help strings are displaying the full tab names.

Next I could rename tab-bar-tab-name-format-function to
tab-bar-tab-name-format-functions with the default value
composed from the code fragments of tab-bar-tab-name-format-default:

  '(tab-bar-tab-name-format-hints
    tab-bar-tab-name-format-close-button
    tab-bar-tab-name-format-face
   )

Then you will be able to customize it to:

  '(tab-bar-tab-name-format-truncate
    tab-bar-tab-name-format-hints
    tab-bar-tab-name-format-close-button
    tab-bar-tab-name-format-face
   )

That first will truncate the tab name, then add numeric hints to the
truncated name, then add the close button, then put faces on the final string
that will be displayed on the tab bar.

Message #20 received at 65554 <at> debbugs.gnu.org (full text, mbox):

From: Visuwesh <visuweshm <at> gmail.com>
To: Juri Linkov <juri <at> linkov.net>
Cc: 65554 <at> debbugs.gnu.org
Subject: Re: bug#65554: 30.0.50; help-echo string for truncated tab-bar
 names is not viewable
Date: Mon, 28 Aug 2023 19:33:32 +0530

[திங்கள் ஆகஸ்ட் 28, 2023] Juri Linkov wrote:

>>> however, tab-bar--format-tab which is used by
>>> tab-bar-format-tabs overrides this help-echo string with "Current tab"
>>> and "Click to visit tab".  If I remove :help plist items from
>>> tab-bar--format-tab, then I don't get the help-echo string that was set
>>> by tab-bar-tab-name-truncated but what the tab looks like in Emacs.
>>
>> When truncation will be in tab-bar-tab-name-format-function
>> then the useless help-echo strings in tab-bar--format-tab
>> could be replaced with help strings that display the full names.
>
> Now the help strings are displaying the full tab names.

I customised tab-bar-tab-name-function to -truncated but it still shows
the truncated name in the tooltip.  If I change -format-function to
-truncated, then I don't see the truncation in the tab name...
I am changing the functions as per the choices in the Custom interface.

> Next I could rename tab-bar-tab-name-format-function to
> tab-bar-tab-name-format-functions with the default value
> composed from the code fragments of tab-bar-tab-name-format-default:
>
>   '(tab-bar-tab-name-format-hints
>     tab-bar-tab-name-format-close-button
>     tab-bar-tab-name-format-face
>    )
>
> Then you will be able to customize it to:
>
>   '(tab-bar-tab-name-format-truncate
>     tab-bar-tab-name-format-hints
>     tab-bar-tab-name-format-close-button
>     tab-bar-tab-name-format-face
>    )
>
> That first will truncate the tab name, then add numeric hints to the
> truncated name, then add the close button, then put faces on the final string
> that will be displayed on the tab bar.

That would be much more convenient, and make the customisation around
the tab name a lot less confusing.

Message #23 received at 65554 <at> debbugs.gnu.org (full text, mbox):

From: Juri Linkov <juri <at> linkov.net>
To: Visuwesh <visuweshm <at> gmail.com>
Cc: 65554 <at> debbugs.gnu.org
Subject: Re: bug#65554: 30.0.50; help-echo string for truncated tab-bar
 names is not viewable
Date: Mon, 28 Aug 2023 19:57:49 +0300

>> Next I could rename tab-bar-tab-name-format-function to
>> tab-bar-tab-name-format-functions with the default value
>> composed from the code fragments of tab-bar-tab-name-format-default:
>>
>>   '(tab-bar-tab-name-format-hints
>>     tab-bar-tab-name-format-close-button
>>     tab-bar-tab-name-format-face
>>    )
>>
>> Then you will be able to customize it to:
>>
>>   '(tab-bar-tab-name-format-truncate
>>     tab-bar-tab-name-format-hints
>>     tab-bar-tab-name-format-close-button
>>     tab-bar-tab-name-format-face
>>    )
>>
>> That first will truncate the tab name, then add numeric hints to the
>> truncated name, then add the close button, then put faces on the final string
>> that will be displayed on the tab bar.
>
> That would be much more convenient, and make the customisation around
> the tab name a lot less confusing.

Now tab-bar-tab-name-format-functions is pushed to master.

Please try to customize it and add tab-bar-tab-name-format-truncated
to the top of the list.

PS: I think no functions/defcustoms should be obsoleted with this change.

Message #26 received at 65554 <at> debbugs.gnu.org (full text, mbox):

From: Visuwesh <visuweshm <at> gmail.com>
To: Juri Linkov <juri <at> linkov.net>
Cc: 65554 <at> debbugs.gnu.org
Subject: Re: bug#65554: 30.0.50; help-echo string for truncated tab-bar
 names is not viewable
Date: Thu, 31 Aug 2023 10:20:01 +0530

[திங்கள் ஆகஸ்ட் 28, 2023] Juri Linkov wrote:

> Now tab-bar-tab-name-format-functions is pushed to master.
>
> Please try to customize it and add tab-bar-tab-name-format-truncated
> to the top of the list.

Thanks, it works as expected!

> PS: I think no functions/defcustoms should be obsoleted with this change.

Message #29 received at 65554 <at> debbugs.gnu.org (full text, mbox):

From: Juri Linkov <juri <at> linkov.net>
To: Visuwesh <visuweshm <at> gmail.com>
Cc: 65554 <at> debbugs.gnu.org
Subject: Re: bug#65554: 30.0.50; help-echo string for truncated tab-bar
 names is not viewable
Date: Thu, 31 Aug 2023 09:40:27 +0300

close 65554 30.0.50
thanks

>> Now tab-bar-tab-name-format-functions is pushed to master.
>>
>> Please try to customize it and add tab-bar-tab-name-format-truncated
>> to the top of the list.
>
> Thanks, it works as expected!

Thanks for the request to fix the tab name truncation.
Since it works now, closing this request.

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