1 files changed, 20 insertions, 0 deletions
diff --git a/mako/ext/preprocessors.py b/mako/ext/preprocessors.py
new file mode 100644
index 0000000..d285685
--- /dev/null
+++ b/mako/ext/preprocessors.py
@@ -0,0 +1,20 @@
+# ext/preprocessors.py
+# Copyright 2006-2023 the Mako authors and contributors <see AUTHORS file>
+#
+# This module is part of Mako and is released under
+# the MIT License: http://www.opensource.org/licenses/mit-license.php
+
+"""preprocessing functions, used with the 'preprocessor'
+argument on Template, TemplateLookup"""
+
+import re
+
+
+def convert_comments(text):
+    """preprocess old style comments.
+
+    example:
+
+    from mako.ext.preprocessors import convert_comments
+    t = Template(..., preprocessor=convert_comments)"""
+    return re.sub(r"(?<=\n)\s*#[^#]", "##", text)