From a7e2caa369639feb9c7562346dbb3d0827b37491 Mon Sep 17 00:00:00 2001
From: Lorenz Diener <lorenz.diener@uni-bremen.de>
Date: Wed, 29 Nov 2017 18:04:54 +0100
Subject: [PATCH] Check hashtags in streaming API

---
 mastodon/Mastodon.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mastodon/Mastodon.py b/mastodon/Mastodon.py
index 9df51ea..2f84635 100644
--- a/mastodon/Mastodon.py
+++ b/mastodon/Mastodon.py
@@ -1044,6 +1044,8 @@ class Mastodon:
         a subclass of StreamListener which will receive callbacks for incoming
         events.
         """
+        if tag.startswith("#"):
+            raise MastodonIllegalArgumentError("Tag parameter should omit leading #")
         return self.__stream("/api/v1/streaming/hashtag?tag={}".format(tag), listener)
 
     ###