diff --git a/src/backend/html_markdown.py b/src/backend/html_markdown.py
index 76f40cfe..e8bd817a 100644
--- a/src/backend/html_markdown.py
+++ b/src/backend/html_markdown.py
@@ -120,13 +120,13 @@ class HTMLProcessor:
user_id_localpart = r"[\x21-\x39\x3D-\x7E]+?"
user_id_regex = re.compile(
- rf"(?P@{user_id_localpart}:(?P[a-zA-Z\d.-:]*[a-zA-Z\d]))",
+ rf"(?P@{user_id_localpart}:(?P[a-zA-Z\d.:-]*[a-zA-Z\d]))",
)
room_id_regex = re.compile(
- rf"(?P!{opaque_id}:(?P[a-zA-Z\d.-:]*[a-zA-Z\d]))",
+ rf"(?P!{opaque_id}:(?P[a-zA-Z\d.:-]*[a-zA-Z\d]))",
)
room_alias_regex = re.compile(
- r"(?=^|\W)(?P#\S+?:(?P[a-zA-Z\d.-:]*[a-zA-Z\d]))",
+ r"(?=^|\W)(?P#\S+?:(?P[a-zA-Z\d.:-]*[a-zA-Z\d]))",
)
link_regexes = [re.compile(r, re.IGNORECASE)
@@ -136,7 +136,7 @@ class HTMLProcessor:
r"(?:/[/\-_.,a-z\d#%&?;=~]*)?(?:\([/\-_.,a-z\d#%&?;=~]*\))?)"),
# mailto: and tel:
- r"mailto:(?P[a-z0-9._-]+@(?P[a-z0-9.-:]*[a-z\d]))",
+ r"mailto:(?P[a-z0-9._-]+@(?P[a-z0-9.:-]*[a-z\d]))",
r"tel:(?P[0-9+-]+)(?P)",
# magnet: