From def1d2f6dd2caf2c8888f7b256b994a231af3c84 Mon Sep 17 00:00:00 2001
From: fantactuka <fantactuka@gmail.com>
Date: Tue, 29 Oct 2024 23:26:43 -0400
Subject: [PATCH] #6768 fix to avoid infinite markdown shortcut matchers run

---
 packages/lexical-markdown/src/MarkdownShortcuts.ts     |  5 ++++-
 .../lexical-playground/__tests__/e2e/Markdown.spec.mjs | 10 ++++++++++
 .../src/plugins/MarkdownTransformers/index.ts          |  2 +-
 3 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/packages/lexical-markdown/src/MarkdownShortcuts.ts b/packages/lexical-markdown/src/MarkdownShortcuts.ts
index 8021296c648..e6b5d7e523c 100644
--- a/packages/lexical-markdown/src/MarkdownShortcuts.ts
+++ b/packages/lexical-markdown/src/MarkdownShortcuts.ts
@@ -480,10 +480,13 @@ export function registerMarkdownShortcuts(
       const selection = editorState.read($getSelection);
       const prevSelection = prevEditorState.read($getSelection);
 
+      // We expect selection to be a collapsed range and not match previous one (as we want
+      // to trigger transforms only as user types)
       if (
         !$isRangeSelection(prevSelection) ||
         !$isRangeSelection(selection) ||
-        !selection.isCollapsed()
+        !selection.isCollapsed() ||
+        selection.is(prevSelection)
       ) {
         return;
       }
diff --git a/packages/lexical-playground/__tests__/e2e/Markdown.spec.mjs b/packages/lexical-playground/__tests__/e2e/Markdown.spec.mjs
index b434d62be55..dc8d9a4a18e 100644
--- a/packages/lexical-playground/__tests__/e2e/Markdown.spec.mjs
+++ b/packages/lexical-playground/__tests__/e2e/Markdown.spec.mjs
@@ -595,6 +595,16 @@ test.describe.parallel('Markdown', () => {
       `,
       text: 'hello [world](https://www.test.com)!',
     },
+    {
+      html: html`
+        <p
+          class="PlaygroundEditorTheme__paragraph PlaygroundEditorTheme__ltr"
+          dir="ltr">
+          <span data-lexical-text="true">10:20:30😄</span>
+        </p>
+      `,
+      text: '10:20:30:smile:',
+    },
   ];
 
   const NESTED_TEXT_FORMAT_SHORTCUTS = [
diff --git a/packages/lexical-playground/src/plugins/MarkdownTransformers/index.ts b/packages/lexical-playground/src/plugins/MarkdownTransformers/index.ts
index 736267dee54..391e8a7bdb2 100644
--- a/packages/lexical-playground/src/plugins/MarkdownTransformers/index.ts
+++ b/packages/lexical-playground/src/plugins/MarkdownTransformers/index.ts
@@ -100,7 +100,7 @@ export const EMOJI: TextMatchTransformer = {
   dependencies: [],
   export: () => null,
   importRegExp: /:([a-z0-9_]+):/,
-  regExp: /:([a-z0-9_]+):/,
+  regExp: /:([a-z0-9_]+):$/,
   replace: (textNode, [, name]) => {
     const emoji = emojiList.find((e) => e.aliases.includes(name))?.emoji;
     if (emoji) {