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Subject: bug#79865: [PATCH] hideshow: Add modification hooks to remove the hidden blocks
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 Content preview:  Tags: patch This patch adds the `modification-hooks`,
 `insert-in-front-hooks`
 and `insert-behind-hooks` hooks to the overlay ellipsis, so any modification
 near the ellipsis (or inside the hidden block) should sho [...] 
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Tags: patch


This patch adds the `modification-hooks`, `insert-in-front-hooks` and
`insert-behind-hooks` hooks to the overlay ellipsis, so any modification
near the ellipsis (or inside the hidden block) should show the hidden
block.


--=-=-=
Content-Type: text/x-patch
Content-Disposition: attachment;
 filename=0001-hideshow-Add-modification-hooks-to-remove-the-hidden.patch

From 9c39bd4e30505aff07256611bc311d499a05b817 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?El=C3=ADas=20Gabriel=20P=C3=A9rez?= <eg642616@HIDDEN>
Date: Mon, 17 Nov 2025 21:17:46 -0600
Subject: [PATCH] hideshow: Add modification hooks to remove the hidden blocks

bug#

* lisp/progmodes/hideshow.el (hs--discard-overlay-after-change):
New function.
(hs-make-overlay): Use the new function.
---
 lisp/progmodes/hideshow.el | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/lisp/progmodes/hideshow.el b/lisp/progmodes/hideshow.el
index 78990993449..9474332e269 100644
--- a/lisp/progmodes/hideshow.el
+++ b/lisp/progmodes/hideshow.el
@@ -752,6 +752,15 @@ hs-hideable-region-p
     (when-let* ((block (hs-block-positions)))
       (apply #'hs-hideable-region-p block))))
 
+(defun hs--discard-overlay-after-change (o &rest _r)
+  "Remove overlay O after changes.
+Intended to be used in `modification-hooks', `insert-in-front-hooks' and
+`insert-behind-hooks'."
+  (let ((beg (overlay-start o))
+        (end (overlay-end o)))
+    (delete-overlay o)
+    (hs--refresh-indicators beg end)))
+
 (defun hs-make-overlay (b e kind &optional b-offset e-offset)
   "Return a new overlay in region defined by B and E with type KIND.
 KIND is either `code' or `comment'.  Optional fourth arg B-OFFSET
@@ -778,13 +787,20 @@ hs-make-overlay
                   'highlight
                   'help-echo "mouse-1: show hidden lines"
                   'keymap '(keymap (mouse-1 . hs-toggle-hiding))))
+    ;; Internal properties
     (overlay-put ov 'hs kind)
     (overlay-put ov 'hs-b-offset b-offset)
     (overlay-put ov 'hs-e-offset e-offset)
+    ;; Isearch integration
     (when (or (eq io t) (eq io kind))
       (overlay-put ov 'isearch-open-invisible 'hs-isearch-show)
       (overlay-put ov 'isearch-open-invisible-temporary
                    'hs-isearch-show-temporary))
+    ;; Remove overlay after modifications
+    (overlay-put ov 'modification-hooks    '(hs--discard-overlay-after-change))
+    (overlay-put ov 'insert-in-front-hooks '(hs--discard-overlay-after-change))
+    (overlay-put ov 'insert-behind-hooks   '(hs--discard-overlay-after-change))
+
     (when hs-set-up-overlay (funcall hs-set-up-overlay ov))
     (hs--refresh-indicators b e)
     ov))
-- 
2.51.1


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To: Elijah Gabe =?UTF-8?Q?P=C3=A9rez?= <eg642616@HIDDEN>
Subject: bug#79865: Acknowledgement ([PATCH] hideshow: Add modification
 hooks to remove the hidden blocks)
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Subject: bug#79865: [PATCH] hideshow: Add modification hooks to remove the hidden blocks
Resent-From: Juri Linkov <juri@HIDDEN>
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close 79865 31.0.50
thanks

> This patch adds the `modification-hooks`, `insert-in-front-hooks` and
> `insert-behind-hooks` hooks to the overlay ellipsis, so any modification
> near the ellipsis (or inside the hidden block) should show the hidden
> block.

Thanks, pushed.

Message received at control <at> debbugs.gnu.org:

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From: Juri Linkov <juri@HIDDEN>
To: Elijah Gabe =?iso-8859-1?Q?P=E9rez?= <eg642616@HIDDEN>
Subject: Re: bug#79865: [PATCH] hideshow: Add modification hooks to remove
 the hidden blocks
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close 79865 31.0.50
thanks

> This patch adds the `modification-hooks`, `insert-in-front-hooks` and
> `insert-behind-hooks` hooks to the overlay ellipsis, so any modification
> near the ellipsis (or inside the hidden block) should show the hidden
> block.

Thanks, pushed.

Last modified: Thu, 20 Nov 2025 17:45:01 UTC

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