Escape text inside entity when building unparsed text (pyrogram#1156)

Princic-1837592 · web-flow · commit 669b39927b7f · 2022-12-06T20:09:31.000+01:00
diff --git a/pyrogram/parser/html.py b/pyrogram/parser/html.py
@@ -233,8 +233,10 @@ def recursive(entity_i: int) -> int:
         while i < len(entities):
             i += recursive(i)
 
+        last_offset = entities_offsets[-1][1]
         # no need to sort, but still add entities starting from the end
         for entity, offset in reversed(entities_offsets):
-            text = text[:offset] + entity + text[offset:]
+            text = text[:offset] + entity + html.escape(text[offset:last_offset]) + text[last_offset:]
+            last_offset = offset
 
         return utils.remove_surrogates(text)
