GNU bug report logs - #47118
28.0.50; [PATCH] lisp/tab-line.el: Add face for group-tab

Previous Next

Full log

View this message in rfc822 format

From: Gabriel <gabriel376 <at> hotmail.com>
To: 47118 <at> debbugs.gnu.org
Subject: bug#47118: 28.0.50; [PATCH] lisp/tab-line.el: Add face for group-tab
Date: Fri, 12 Mar 2021 23:35:40 -0300

[Message part 1 (text/plain, inline)]

The problem:
When tab-line mode is enabled and configured to group buffers, a group
tab is added as the first tab. This is not a regular tab that displays a
buffer, but rather a tab to indicate the group. The face used for this
group-tab is the same of an inactive tab, which makes harder to
differentiate betweem a group tab and a regular tab that can be selected
to display a buffer.

How to reproduce:
1. emacs -Q
2. Configure tab groups by project:
(setq-default tab-line-tabs-buffer-group-function
              (lambda (b) (with-current-buffer b (vc-root-dir)))
              tab-line-tabs-function 'tab-line-tabs-buffer-groups)
3. Enable tab-line mode:
(global-tab-line-mode 1)
4. Open file from a project handled by some vc backend (e.g.: git)
5. The tab group will be displayed as the first tab with a common face

[before-patch.png (image/png, inline)]

[Message part 3 (text/plain, inline)]

The proposed solution:
Add a new face for group tabs that can be configured via
'tab-line-tab-face-functions', similar to how
'tab-line-tab-face-special' works.

How to test:
1. emacs -Q
2. Apply the patch
3. Configure tab groups by project and group face:
(setq-default tab-line-tabs-buffer-group-function
          (lambda (b) (with-current-buffer b (vc-root-dir)))
          tab-line-tabs-function 'tab-line-tabs-buffer-groups
          tab-line-tab-face-functions '(tab-line-tab-face-group))
4. Enable tab-line-mode:
(global-tab-line-mode 1)
5. Open file from a project handled by some vc backend (e.g.: git)
6. The tab group will be displayed with a different face

[0001-lisp-tab-line.el-Add-face-for-group-tab.patch (text/x-diff, attachment)]

[after-patch.png (image/png, inline)]

[Message part 6 (text/plain, inline)]

I am not sure what is the appropriate default value for the proposed new
face. Feel free to modify it, if necessary.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.