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@ -27,12 +27,17 @@ don't think we spell it out anywhere in the spec.
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User IDs are
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[well-specified](https://matrix.org/docs/spec/appendices.html#user-identifiers),
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however we should consider dropping `/` from the list of allowed characters, as
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it interferes with URI escaping (XXX: how, specifically?)
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History: `/` was introduced to act as a heirarchical namespacing character "as
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bridged IDs for things like gitter were looking incredibly ugly and using `.`
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or `_` for namespacing rather than a more natural `/` feels ugly too".
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however we should consider dropping `/` from the list of allowed characters,
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because HTTP proxies might rewrite
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`/_matrix/client/r0/profile/@foo%25bar:matrix.org/displayname` to
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`/_matrix/client/r0/profile/@foo/bar:matrix.org/displayname`, messing things
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up.
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History: `/` was introduced with the intention of acting as a hierarchical
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namespacing character, particularly with consideration to the gitter protocol
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which uses it as a hierarchical separator. However, this was not as effective
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as hoped because `@foo/bar:example.com` looks like the ID is partitioned into
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`@foo` and `bar:example.com`.
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Proposal:
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@ -163,7 +168,9 @@ future servers.
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[Spec](https://matrix.org/docs/spec/client_server/unstable.html#m-call-invite)
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These are only used within the body of `m.call.*` events, as far as I am
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aware. However, they are treated as globally-unique identifiers.
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aware. They should be unique within the lifetime of a room. (Some
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implementations currently treat them as globally unique, but that is considered
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an implementation bug.)
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[matrix-js-sdk](https://github.com/matrix-org/matrix-js-sdk/blob/4d310cd4618db4e98a8e6b5eb812480102ee4dee/src/webrtc/call.js#L72) uses `c[0-9.]{32}`.
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[matrix-android-sdk](https://github.com/matrix-org/matrix-android-sdk/blob/5c6f785e53632e7b6fb3f3859a90c3d85b040e7f/matrix-sdk/src/main/java/org/matrix/androidsdk/call/MXWebRtcCall.java#L221) uses `c[0-9]{13}`.
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