fix: extract un-escaping of text/code nodes

Signed-off-by: Maksim Sukharev <antreesy.web@gmail.com>

[skip ci]

src/components/NcRichText/NcRichText.vue

@@ -307,6 +307,7 @@ import NcCheckboxRadioSwitch from '../NcCheckboxRadioSwitch/NcCheckboxRadioSwitc
 import NcLoadingIcon from '../NcLoadingIcon/NcLoadingIcon.vue'
 import { getRoute, remarkAutolink } from './autolink.ts'
 import { remarkPlaceholder, prepareTextNode } from './placeholder.js'
+import { remarkUnescape } from './remarkUnescape.js'
 import GenRandomId from '../../utils/GenRandomId.js'
 
 import { unified } from 'unified'
@@ -456,6 +457,7 @@ export default {
 					useMarkdown: this.useMarkdown,
 					useExtendedMarkdown: this.useExtendedMarkdown,
 				})
+				.use(remarkUnescape)
 				.use(this.useExtendedMarkdown ? remarkGfm.value : undefined)
 				.use(breaks)
 				.use(remark2rehype, {
@@ -480,9 +482,7 @@ export default {
 				})
 				.processSync(this.text
 					// escape special symbol "<" to not treat text as HTML
-					.replace(/</gmi, '&lt;')
-					// unescape special symbol ">" to parse blockquotes
-					.replace(/&gt;/gmi, '>'),
+					.replace(/<[^>]+>/g, (match) => match.replace(/</g, '&lt;')),
 				)
 				.result
 

src/components/NcRichText/remarkUnescape.js

@@ -0,0 +1,19 @@
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+import { visit, SKIP } from 'unist-util-visit'
+
+export const remarkUnescape = function() {
+	return function(tree) {
+		visit(tree, (node) => node.type === 'text' || node.type === 'code',
+			(node, index, parent) => {
+				parent.children.splice(index, 1, {
+					...node,
+					value: node.value.replace(/&lt;/gmi, '<').replace(/&gt;/gmi, '>'),
+				})
+				return [SKIP, index + 1]
+			})
+	}
+}