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Clarify allowed control characters

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Tulir Asokan 2024-02-28 01:30:15 +02:00
parent 97381fddb1
commit 9b75333162
1 changed files with 5 additions and 4 deletions
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content/appendices.md
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@ -612,8 +612,8 @@ users whose user IDs do not conform to the permitted character set, and
a number of rooms whose 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 consisting of any legal
unicode codepoint except for `:`, including the empty string. Localparts
MUST be valid UTF-8 sequences.
unicode codepoint except for `:` and `NUL` (U+0000), including other control
characters and the empty string. Localparts MUST be valid UTF-8 sequences.
Servers SHOULD NOT produce user IDs with localparts outside of the following
character set, and SHOULD NOT forward such user IDs to clients when referenced
@ -673,8 +673,9 @@ human-readable. They are intended to be treated as fully opaque strings
by clients.
The localpart of a room ID (`opaque_id` above) may contain any valid
unicode codepoints except `:`, but it is recommended to only include
ASCII letters and digits (`A-Z`, `a-z`, `0-9`) when generating them.
unicode codepoints, including control characters, except `:` and `NUL`
(U+0000), but it is recommended to only include ASCII letters and
digits (`A-Z`, `a-z`, `0-9`) when generating them.
#### Room Aliases