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* bug#65540: 29.1.50; treesit-inspect-mode does not escape `treesit--inspect-name`
@ 2023-08-25 22:08 Augustin Chéneau
  2023-08-26  5:24 ` Eli Zaretskii
  0 siblings, 1 reply; 3+ messages in thread
From: Augustin Chéneau @ 2023-08-25 22:08 UTC (permalink / raw)
  To: 65540

[-- Attachment #1: Type: text/plain, Size: 13244 bytes --]


The minor mode `treesit-inspect-mode` uses the mode-line to display the
current node. However, a node name containing a string is displayed
incorrecly because mode-line will try to interpret it as a
'%-contruct'. Each '%' needs to be escaped as a double percent ('%%').

The attached patch should fix the issue (works for me).


In GNU Emacs 29.1.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version
  3.24.38, cairo version 1.17.8) of 2023-08-23 built on inspiron-5567
Repository revision: b72f23a532bf57ead565182f8f2d5f2818032da8
Repository branch: makepkg
Windowing system distributor 'The X.Org Foundation', version 11.0.12302000
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[-- Attachment #2: 0001-Escape-strings-displayed-by-the-mode-line.patch --]
[-- Type: text/x-patch, Size: 1901 bytes --]

From 99be4333aa9a662fb49a182140e4079ffcecb570 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Augustin=20Ch=C3=A9neau?= <btuin@mailo.com>
Date: Sat, 26 Aug 2023 00:03:41 +0200
Subject: [PATCH] Escape strings displayed by the mode-line

Strings containing a percent character need to be escaped to be
displayed properly, as a percent ('%') in the mode-line denotes a
'%-contruct' with a special meaning.

* lisp/treesit.el (treesit-inspect-mode): Escape `treesit--inspect-name`
---
 lisp/treesit.el | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/lisp/treesit.el b/lisp/treesit.el
index 04d460fdea4..2ae94594f75 100644
--- a/lisp/treesit.el
+++ b/lisp/treesit.el
@@ -2466,6 +2466,13 @@ treesit-inspect-node-at-point
           (message "%s" treesit--inspect-name)
         (message "No node at point")))))
 
+(defun treesit--escape-mode-line (str)
+  "Escape the string STR that will be displayed in the mode-line.
+
+It replaces the percent character '%' with a double percent '%%', as a single
+percent has a special meaning in the mode-line."
+  (string-replace "%" "%%" str))
+
 (define-minor-mode treesit-inspect-mode
   "Minor mode that displays in the mode-line the node which starts at point.
 
@@ -2490,11 +2497,11 @@ treesit-inspect-mode
         (add-hook 'post-command-hook
                   #'treesit-inspect-node-at-point 0 t)
         (add-to-list 'mode-line-misc-info
-                     '(:eval treesit--inspect-name)))
+                     '(:eval (treesit--escape-mode-line treesit--inspect-name))))
     (remove-hook 'post-command-hook
                  #'treesit-inspect-node-at-point t)
     (setq mode-line-misc-info
-          (remove '(:eval treesit--inspect-name)
+          (remove '(:eval (treesit--escape-mode-line treesit--inspect-name))
                   mode-line-misc-info))))
 
 (defun treesit-query-validate (language query)
-- 
2.42.0


^ permalink raw reply related	[flat|nested] 3+ messages in thread

* bug#65540: 29.1.50; treesit-inspect-mode does not escape `treesit--inspect-name`
  2023-08-25 22:08 bug#65540: 29.1.50; treesit-inspect-mode does not escape `treesit--inspect-name` Augustin Chéneau
@ 2023-08-26  5:24 ` Eli Zaretskii
  2023-08-27 21:55   ` Yuan Fu
  0 siblings, 1 reply; 3+ messages in thread
From: Eli Zaretskii @ 2023-08-26  5:24 UTC (permalink / raw)
  To: Augustin Chéneau, Yuan Fu; +Cc: 65540

> Date: Sat, 26 Aug 2023 00:08:00 +0200
> From: Augustin Chéneau (BTuin) <btuin@mailo.com>
> 
> The minor mode `treesit-inspect-mode` uses the mode-line to display the
> current node. However, a node name containing a string is displayed
> incorrecly because mode-line will try to interpret it as a
> '%-contruct'. Each '%' needs to be escaped as a double percent ('%%').
> 
> The attached patch should fix the issue (works for me).

Thanks.  Yuan, any comments, or should I install this?

I thought about an alternative: do something like that in
treesit-inspect-node-at-point, where the value of
treesit--inspect-name is computed, but perhaps we want to allow that
variable to be set by other Lisp programs (although it's an internal
variable)?





^ permalink raw reply	[flat|nested] 3+ messages in thread

* bug#65540: 29.1.50; treesit-inspect-mode does not escape `treesit--inspect-name`
  2023-08-26  5:24 ` Eli Zaretskii
@ 2023-08-27 21:55   ` Yuan Fu
  0 siblings, 0 replies; 3+ messages in thread
From: Yuan Fu @ 2023-08-27 21:55 UTC (permalink / raw)
  To: Eli Zaretskii; +Cc: Augustin Chéneau (BTuin), 65540-done



> On Aug 25, 2023, at 10:24 PM, Eli Zaretskii <eliz@gnu.org> wrote:
> 
>> Date: Sat, 26 Aug 2023 00:08:00 +0200
>> From: Augustin Chéneau (BTuin) <btuin@mailo.com>
>> 
>> The minor mode `treesit-inspect-mode` uses the mode-line to display the
>> current node. However, a node name containing a string is displayed
>> incorrecly because mode-line will try to interpret it as a
>> '%-contruct'. Each '%' needs to be escaped as a double percent ('%%').
>> 
>> The attached patch should fix the issue (works for me).
> 
> Thanks.  Yuan, any comments, or should I install this?

Thanks, Augustin, and Eli. I pushed a simpler patch (we only set treesit--inspect-name in that one place, so probably don’t need a function for it).

> I thought about an alternative: do something like that in
> treesit-inspect-node-at-point, where the value of
> treesit--inspect-name is computed, but perhaps we want to allow that
> variable to be set by other Lisp programs (although it's an internal
> variable)?

That’s an possible approach, but what we have now works just fine.

Yuan




^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2023-08-27 21:55 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2023-08-25 22:08 bug#65540: 29.1.50; treesit-inspect-mode does not escape `treesit--inspect-name` Augustin Chéneau
2023-08-26  5:24 ` Eli Zaretskii
2023-08-27 21:55   ` Yuan Fu

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