Exclude DEL from historical user IDs
The range is inclusive, so don't include 7F
@@ -190,7 +190,7 @@ history includes events with a ``sender`` which does not conform. In order to
handle these rooms successfully, clients and servers MUST accept user IDs with
localparts from the expanded character set::
- extended_user_id_char = %x21-39 / %x3B-7F ; all ascii printing chars except :
+ extended_user_id_char = %x21-39 / %x3B-7E ; all ascii printing chars except :
Mapping from other character sets
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