* bug#71601: 29.1; force-mode-line-update does not refresh names of tab-lines
@ 2024-06-16 22:58 Al Haji-Ali
2024-06-17 6:11 ` Juri Linkov
0 siblings, 1 reply; 4+ messages in thread
From: Al Haji-Ali @ 2024-06-16 22:58 UTC (permalink / raw)
To: 71601
In an `emacs -Q`, I tried the following code:
(progn
(tab-line-mode)
(setq-local tab-line-tab-name-function
(defun my/tab-name(tab &optional _)
(with-current-buffer tab
(concat (buffer-name) " " (format-time-string "%S"))))))
This works fine and I get the seconds after the buffer-name. However, I seem to have no way of updating the tab-line to cause the names to be refreshed (except to add or remove a tab).
The documentation of `force-mode-line-update` and the `:set` code of `tab-line-tab-name-function` suggest that calling `(force-mode-line-update t)` would do the trick, but on my Emacs, this does not work. Is this a bug or am I misunderstanding the documentation?
I apologize that I am unable to test this on Emacs 30.
-- Al
In GNU Emacs 29.1 (build 1, aarch64-apple-darwin22.5.0, Carbon Version
169 AppKit 2299.6) of 2023-09-09 built on m2air.local
Windowing system distributor 'Apple Inc.', version 14.1.2
System Description: macOS 14.1.2
Configured using:
'configure --enable-locallisppath=/opt/homebrew/share/emacs/site-lisp
--infodir=/opt/homebrew/Cellar/emacs-mac/emacs-29.1-mac-10.0/share/info
--mandir=/opt/homebrew/Cellar/emacs-mac/emacs-29.1-mac-10.0/share/man
--prefix=/opt/homebrew/Cellar/emacs-mac/emacs-29.1-mac-10.0 --with-mac
--enable-mac-app=/opt/homebrew/Cellar/emacs-mac/emacs-29.1-mac-10.0
--with-gnutls --with-modules --with-mac-metal --with-native-compilation
--with-tree-sitter 'CFLAGS=-I/opt/homebrew/opt/gcc/include
-I/opt/homebrew/opt/libgccjit/include'
'LDFLAGS=-L/opt/homebrew/lib/gcc/13 -I/opt/homebrew/opt/gcc/include
-I/opt/homebrew/opt/libgccjit/include''
Configured features:
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PDUMPER RSVG SQLITE3 THREADS TOOLKIT_SCROLL_BARS TREE_SITTER XIM ZLIB
Important settings:
value of $LANG: en_GB.UTF-8
locale-coding-system: utf-8-unix
Major mode: Lisp Interaction
Minor modes in effect:
tab-line-mode: t
tooltip-mode: t
global-eldoc-mode: t
eldoc-mode: t
show-paren-mode: t
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mac-mouse-wheel-mode: t
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font-lock-mode: t
blink-cursor-mode: t
line-number-mode: t
indent-tabs-mode: t
transient-mark-mode: t
auto-composition-mode: t
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auto-compression-mode: t
Load-path shadows:
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Features:
(shadow sort mail-extr emacsbug message mailcap yank-media puny dired
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Memory information:
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(buffers 984 17))
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#71601: 29.1; force-mode-line-update does not refresh names of tab-lines
2024-06-16 22:58 bug#71601: 29.1; force-mode-line-update does not refresh names of tab-lines Al Haji-Ali
@ 2024-06-17 6:11 ` Juri Linkov
2024-06-17 8:31 ` Al Haji-Ali
0 siblings, 1 reply; 4+ messages in thread
From: Juri Linkov @ 2024-06-17 6:11 UTC (permalink / raw)
To: Al Haji-Ali; +Cc: 71601
> (progn
> (tab-line-mode)
> (setq-local tab-line-tab-name-function
> (defun my/tab-name(tab &optional _)
> (with-current-buffer tab
> (concat (buffer-name) " " (format-time-string "%S"))))))
>
> This works fine and I get the seconds after the buffer-name. However,
> I seem to have no way of updating the tab-line to cause the names to
> be refreshed (except to add or remove a tab).
> The documentation of `force-mode-line-update` and the `:set` code of
> `tab-line-tab-name-function` suggest that calling
> `(force-mode-line-update t)` would do the trick, but on my Emacs, this
> does not work. Is this a bug or am I misunderstanding the
> documentation?
Please try to set `tab-line-cache-key-function` to a function
that is a copy of `tab-line-cache-key-default` but where
at the end there is appended your addition of (format-time-string "%S"):
(setq tab-line-cache-key-function
(lambda (tabs)
(list
tabs
;; handle buffer renames
(buffer-name (window-buffer))
;; handle tab-line scrolling
(window-parameter nil 'tab-line-hscroll)
;; for setting face 'tab-line-tab-current'
(mode-line-window-selected-p)
;; for `tab-line-tab-face-modified'
(and (memq 'tab-line-tab-face-modified
tab-line-tab-face-functions)
(buffer-file-name)
(buffer-modified-p))
;; Added key:
(format-time-string "%S"))))
This will clear the cache every time when (format-time-string "%S")
changes, i.e. every second.
If this works, please suggest where would you expect to find this information.
Should the documentation be updated for 'tab-line-tab-name-function'?
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#71601: 29.1; force-mode-line-update does not refresh names of tab-lines
2024-06-17 6:11 ` Juri Linkov
@ 2024-06-17 8:31 ` Al Haji-Ali
2024-06-17 16:49 ` Juri Linkov
0 siblings, 1 reply; 4+ messages in thread
From: Al Haji-Ali @ 2024-06-17 8:31 UTC (permalink / raw)
To: Juri Linkov; +Cc: 71601
On 17/06/2024, Juri Linkov wrote:
>
> Please try to set `tab-line-cache-key-function` to a function
> that is a copy of `tab-line-cache-key-default` but where
> at the end there is appended your addition of (format-time-string "%S"):
Indeed, the tab caching seems to be the issue. I resolved it slightly differently by clearing the cache before calling `force-mode-line-update`.
(set-window-parameter nil 'tab-line-cache nil)
(force-mode-line-update)
whenever I want to update the tab names.
I would suggest that a solution for forcing name updates is included in the documentation for `tab-line-tab-name-format-function`, possibly defining a new function like
`tab-line-force-update`.
Also, shouldn't the cache be cleared in the `:set` code of `tab-line-tab-name-format-function`? (That's where I actually figured out that I needed to call `force-mode-line-update`).
-- Al
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#71601: 29.1; force-mode-line-update does not refresh names of tab-lines
2024-06-17 8:31 ` Al Haji-Ali
@ 2024-06-17 16:49 ` Juri Linkov
0 siblings, 0 replies; 4+ messages in thread
From: Juri Linkov @ 2024-06-17 16:49 UTC (permalink / raw)
To: Al Haji-Ali; +Cc: 71601
close 71601 30.0.50
thanks
>> Please try to set `tab-line-cache-key-function` to a function
>> that is a copy of `tab-line-cache-key-default` but where
>> at the end there is appended your addition of (format-time-string "%S"):
>
> Indeed, the tab caching seems to be the issue. I resolved it slightly
> differently by clearing the cache before calling
> `force-mode-line-update`.
>
> (set-window-parameter nil 'tab-line-cache nil)
> (force-mode-line-update)
>
> whenever I want to update the tab names.
>
> I would suggest that a solution for forcing name updates is included
> in the documentation for `tab-line-tab-name-format-function`, possibly
> defining a new function like
> `tab-line-force-update`.
> Also, shouldn't the cache be cleared in the `:set` code of
> `tab-line-tab-name-format-function`? (That's where I actually figured
> out that I needed to call `force-mode-line-update`).
Thanks for the suggestion. So the function `tab-line-force-update`
for the `:set` code is pushed now.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2024-06-17 16:49 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2024-06-16 22:58 bug#71601: 29.1; force-mode-line-update does not refresh names of tab-lines Al Haji-Ali
2024-06-17 6:11 ` Juri Linkov
2024-06-17 8:31 ` Al Haji-Ali
2024-06-17 16:49 ` Juri Linkov
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