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Forbid colons in MXIDs

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There is a single (AS) user on matrix.org who has a colon in their localpart,
but I suspect that is an artifact of old bridge code and won't work over
federation anyway.

Colons in MXIDs are particularly harmful because they make it impossible to
split mxids into local- and remote-parts
This commit is contained in:
Richard van der Hoff 2017-12-18 14:16:25 +00:00
parent f0f91bd9bc
commit a36f8ba00d
1 changed files with 1 additions and 1 deletions
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specification/appendices/identifier_grammar.rst
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@ -139,7 +139,7 @@ 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 = %x21-7E
extended_user_id_char = %x21-39 / %x3B-7F ; all ascii printing chars except :
Mapping from other character sets
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