Update utils.py

utils.py

@@ -76,7 +76,10 @@ def set_text_bg_color(pattern: str, text: str, color: str = "yellow") -> str:
     """
 
     # Find all matches
-    matches = set(re.findall(pattern, text, flags=re.IGNORECASE))
+    matches = set(re.findall(re.escape(pattern), text, flags=re.IGNORECASE))
+    if len(matches) == 0:
+        # No matches found
+        return text
 
     replace_dict = {re.escape(m): f'<span style="background-color:{color}">{m}</span>' for m in matches}
     pattern = re.compile("|".join(replace_dict.keys()))