pyrofork: Add support for custom emoji in markdown unparser

Signed-off-by: wulan17 <wulan17@nusantararom.org>

pyrogram/parser/markdown.py

@@ -234,11 +234,18 @@ class Markdown:
                     # No closing delimiter for blockquotes
             else:
                 url = None
+                is_emoji = False
                 if entity.type == MessageEntityType.TEXT_LINK:
                     url = entity.url
                 elif entity.type == MessageEntityType.TEXT_MENTION:
                     url = f'tg://user?id={entity.user.id}'
+                elif entity.type == MessageEntityType.CUSTOM_EMOJI:
+                    url = f"tg://emoji?id={entity.custom_emoji_id}"
+                    is_emoji = True
                 if url:
+                    if is_emoji:
+                        insert_at.append((s, i, '!['))
+                    else:
                         insert_at.append((s, i, '['))
                     insert_at.append((e, -i, f']({url})'))