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Merge pull request #1605 from turt2live/travis/c2s/clarify-html-again

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Mention that clients should not be producing invalid HTML
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Travis Ralston 2018-08-31 08:41:29 -06:00 • committed by GitHub
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changelogs/client_server/newsfragments/1605.clarification Normal file
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Clarify that clients should not be generating invalid HTML for formatted events.

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specification/modules/instant_messaging.rst
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@ -106,6 +106,12 @@ of tags they can render, falling back to other representations of the tags where
For example, a client may not be able to render tables correctly and instead could fall
back to rendering tab-delimited text.
In addition to not rendering unsafe HTML, clients should not emit unsafe HTML in events.
Likewise, clients should not generate HTML that is not needed, such as extra paragraph tags
surrounding text due to Rich Text Editors. HTML included in events should otherwise be valid,
such as having appropriate closing tags, appropriate attributes (considering the custom ones
defined in this specification), and generally valid structure.
.. Note::
A future iteration of the specification will support more powerful and extensible
message formatting options, such as the proposal `MSC1225 <https://github.com/matrix-org/matrix-doc/issues/1225>`_.