Fix the catastrophic backtracking caused by Nix

1 files changed, 1 insertions, 1 deletions

diff --git a/bot/cogs/bot.py b/bot/cogs/bot.py
index 600285cf6..3ceebd6ab 100644
--- a/bot/cogs/bot.py
+++ b/bot/cogs/bot.py
@@ -88,7 +88,7 @@ class Bot:
         """
         if msg.count("\n") >= 3:
             # Filtering valid Python codeblocks and exiting if a valid Python codeblock is found
-            if re.search("```(python|py)\n((?:.*\n*)+)```", msg, re.IGNORECASE):
+            if re.search("```(?:py|python)\n(.*?)```", msg, re.IGNORECASE | re.DOTALL):
                 log.trace("Someone wrote a message that was already a "
                           "valid Python syntax highlighted code block. No action taken.")
                 return None