Fixed statefulness of HttpLexer between get_tokens calls

2 files changed, 6 insertions, 0 deletions

diff --git a/CHANGES b/CHANGES
index 698868ca..395515a2 100644
--- a/CHANGES
+++ b/CHANGES
@@ -17,6 +17,7 @@ Version 2.1.1
 - Fixed image formatter font searching on Macs (#1188)
 - Fixed deepcopy-ing of Token instances (#1168)
 - Fixed Julia string interpolation (#1170)
+- Fixed statefulness of HttpLexer between get_tokens calls
 - Many smaller fixes to various lexers
 
 
diff --git a/pygments/lexers/textfmts.py b/pygments/lexers/textfmts.py
index 43b16f8c..cab9add5 100644
--- a/pygments/lexers/textfmts.py
+++ b/pygments/lexers/textfmts.py
@@ -122,6 +122,11 @@ class HttpLexer(RegexLexer):
 
     flags = re.DOTALL
 
+    def get_tokens_unprocessed(self, text, stack=('root',)):
+        """Reset the content-type state."""
+        self.content_type = None
+        return RegexLexer.get_tokens_unprocessed(self, text, stack)
+
     def header_callback(self, match):
         if match.group(1).lower() == 'content-type':
             content_type = match.group(5).strip()