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https://github.com/moparisthebest/xeps
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Merge branch 'premerge' into 'main'
Premerge See merge request xsf/xeps!23
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Jonas Schäfer
commit
be8c2b5c9a
@ -10,7 +10,7 @@
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<abstract>This specification describes a solution of marking the last received, displayed and acknowledged message in a chat.</abstract>
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&LEGALNOTICE;
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<number>0333</number>
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<status>Deferred</status>
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<status>Experimental</status>
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<lastcall>2017-03-01</lastcall>
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<lastcall>2017-02-22</lastcall>
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<lastcall>2017-02-11</lastcall>
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@ -13,7 +13,7 @@
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</abstract>
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&LEGALNOTICE;
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<number>0393</number>
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<status>Proposed</status>
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<status>Draft</status>
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<lastcall>2020-05-26</lastcall>
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<type>Standards Track</type>
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<sig>Standards</sig>
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@ -26,6 +26,12 @@
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<supersededby/>
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<shortname>styling</shortname>
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&sam;
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<revision>
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<version>1.0.0</version>
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<date>2020-10-13</date>
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<initials>XEP Editor (jsc)</initials>
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<remark><p>Accepted as Draft as per Council vote from 2020-10-07.</p></remark>
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</revision>
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<revision>
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<version>0.4.0</version>
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<date>2020-06-02</date>
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237
xep-0444.xml
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237
xep-0444.xml
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<?xml version='1.0' encoding='UTF-8'?>
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<!DOCTYPE xep SYSTEM 'xep.dtd' [
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<!ENTITY % ents SYSTEM 'xep.ent'>
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%ents;
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]>
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<?xml-stylesheet type='text/xsl' href='xep.xsl'?>
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<xep>
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<header>
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<title>Message Reactions</title>
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<abstract>This specification defines a way for adding reactions to a message.</abstract>
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&LEGALNOTICE;
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<number>0444</number>
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<status>Experimental</status>
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<type>Standards Track</type>
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<sig>Standards</sig>
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<approver>Council</approver>
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<dependencies>
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<spec>XMPP Core</spec>
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<spec>XEP-0001</spec>
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<spec>XEP-0030</spec>
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<spec>XEP-0115</spec>
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<spec>XEP-0203</spec>
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<spec>XEP-0334</spec>
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<spec>XEP-0359</spec>
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</dependencies>
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<supersedes/>
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<supersededby/>
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<shortname>reactions</shortname>
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<author>
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<firstname>Natalie</firstname>
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<surname>Wirth</surname>
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<email>xsf@larma.de</email>
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</author>
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<author>
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<firstname>Marvin</firstname>
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<surname>Wissfeld</surname>
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<email>xsf@larma.de</email>
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<jid>jabber@larma.de</jid>
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</author>
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<revision>
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<version>0.1.0</version>
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<date>2020-10-13</date>
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<initials>XEP Editor (jsc)</initials>
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<remark>Accepted by vote of Council on 2020-10-07.</remark>
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</revision>
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<revision>
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<version>0.0.1</version>
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<date>2019-07-14</date>
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<initials>nw/mw</initials>
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<remark><p>First draft.</p></remark>
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</revision>
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</header>
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<section1 topic='Introduction' anchor='intro'>
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<p>
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Message reactions allow to express an opinion or feeling towards a message
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in a quick and light-weight way. Reactions are described in the form of
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emojis and can enhance communication especially when chatting with multiple
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parties. Other possible uses include voting and checking to-do list items.
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</p>
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<p>
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Reactions are typically displayed in a summarizing fashion visually attached
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to the message they belong to.
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</p>
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<p>
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Related work has been done in &xep0367;. However, it can't be used for
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reactions, as it would cause difficulties with non-supporting clients, is
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not tailored to emojis and does not specify removal of reactions. To solve
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these issues, this XEP introduces a separate XML element for reactions.
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</p>
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</section1>
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<section1 topic='Discovering support' anchor='disco'>
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<p>
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If a client implements message reactions, it MUST specify the
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'urn:xmpp:reactions:0' feature in its service discovery information features
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as specified in &xep0030; and the Entity Capabilities profile specified in &xep0115;.
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</p>
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<example caption='Client requests information about a chat partner's client'><![CDATA[
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<iq type='get'
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to='romeo@montague.lit/orchard'
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from='juliet@capulet.lit/balcony'
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id='info1'>
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<query xmlns='http://jabber.org/protocol/disco#info'/>
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</iq>]]></example>
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<example caption='Partner's client advertises support for reactions'><![CDATA[
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<iq type='result'
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to='juliet@capulet.lit/balcony'
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from='romeo@montague.lit/orchard'
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id='info1'>
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<query xmlns='http://jabber.org/protocol/disco#info'>
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...
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<feature var='urn:xmpp:reactions:0'/>
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...
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</query>
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</iq>]]></example>
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</section1>
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<section1 topic='Use Cases' anchor='usecases'>
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<section2 topic="Sending reactions to a message" anchor="sending-reactions">
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<p>
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When a user chooses to react to a message with a certain emoji, the
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client sends a <message> stanza containing a <reactions>
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element. The chosen emoji is included in a <reaction> element within
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the <reactions> element. The message is referred to by including its
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id or in MUCs its stanza-id as defined in &xep0359; in the 'id' attribute
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of the reactions element.
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</p>
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<example caption="Romeo sends a message"><![CDATA[
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<message to='juliet@capulet.net/balcony' id='744f6e18-a57a-11e9-a656-4889e7820c76' type='chat'>
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<body>Hello, world!</body>
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</message>]]></example>
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<example caption="Juliet sends a 👋 reaction to the message"><![CDATA[
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<message to='romeo@capulet.net/orchard' id='7fdd29fa-a57a-11e9-b04a-4889e7820c76' type='chat'>
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<reactions id='744f6e18-a57a-11e9-a656-4889e7820c76' xmlns='urn:xmpp:reactions:0'>
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<reaction>👋</reaction>
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</reactions>
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<store xmlns="urn:xmpp:hints"/>
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</message>]]></example>
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</section2>
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<section2 topic="Updating reactions to a message" anchor="updating-reactions">
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<p>
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If the user chooses to remove reactions from or add reactions to a
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message they have already reacted to, the client sends a <message>
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with all <reaction> elements that are (still or newly) applicable
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to that message.
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</p>
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<example caption="Juliet adds a 🐢 reaction to the message"><![CDATA[
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<message to='romeo@capulet.net/orchard' id='96d73204-a57a-11e9-88b8-4889e7820c76' type='chat'>
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<reactions id='744f6e18-a57a-11e9-a656-4889e7820c76' xmlns='urn:xmpp:reactions:0'>
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<reaction>👋</reaction>
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<reaction>🐢</reaction>
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</reactions>
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<store xmlns="urn:xmpp:hints"/>
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</message>]]></example>
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<p>
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In order to remove all reactions from a message, an empty
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<reactions> element is sent.
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</p>
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<example caption="Juliet removes all reactions from the message"><![CDATA[
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<message to='romeo@capulet.net/orchard' id='973c9d2e-a57a-11e9-af82-4889e7820c76' type='chat'>
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<reactions id='744f6e18-a57a-11e9-a656-4889e7820c76' xmlns='urn:xmpp:reactions:0'/>
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<store xmlns="urn:xmpp:hints"/>
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</message>]]></example>
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</section2>
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</section1>
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<section1 topic='Business Rules' anchor='rules'>
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<p>Messages MUST NOT contain more then one <reactions> element</p>
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<p>
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A message containing a <reactions> element SHOULD be of type 'chat'
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or 'groupchat'.
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</p>
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<p>
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A <reaction> element SHOULD only contain Unicode codepoints that can
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be displayed as a single emoji, as specified in the latest revision of the
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<link url="http://www.unicode.org/reports/tr51/">Unicode® Technical Standard #51</link> <note>Unicode® Technical Standard #51 <<link url="http://www.unicode.org/reports/tr51/">http://www.unicode.org/reports/tr51/</link>>.</note>.
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Receiving entities MAY ignore <reaction> elements that do not comply
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with this specification.
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</p>
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<p>
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A receiving client SHOULD show reactions attached to the message they where
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in response to. Reactions MAY be displayed in a summarized fashion.
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</p>
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<p>
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A <reactions> element MUST NOT contain the same reaction more than
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once. A receiving entity SHOULD ignore duplicate reactions inside a
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<reactions> element.
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</p>
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<p>
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The sending entity SHOULD add a <store/> hint, as defined in &xep0334;,
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if the message being reacted to does not carry a <no-store/> hint.
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</p>
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<p>
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If a message is updated using &xep0308;, the 'id' attribute of the
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<reactions> element SHOULD reference the original message id.
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A receiving entity SHOULD accept messages with a <reactions> element
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referencing a message correction and SHOULD handle such element as if
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it was using the message id of the original message.
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</p>
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<section2 topic='Acceptable reactions' anchor='acceptable-reactions'>
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<p>
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In direct conversations, a reaction MUST only be accepted if the senders
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bare JID matches the bare JID of any of the two involved parties.
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</p>
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<p>
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In MUCs and MUC PMs, the recipient SHOULD ensure that the real bare JID of
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the sending occupant did not already send a reaction to that message to
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accept it as a new reaction, e.g. by keeping track of leave/join
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presences since the message was send. This implies that in semi-anonymous
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MUCs it MAY be impossible to attach reactions to a message received from
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the history. A reaction MAY still be a valid reaction update (as per the
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next paragraph) if it was not accepted as a new reaction.
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</p>
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<p>
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A reaction MUST only be considered an update if it orignates from the same
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sender as a previous reaction message. In direct conversations, this means
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the bare JID MUST match the original bare JID. In MUCs and MUC PMs the
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senders full JID MAY not match the original full JID, but the recipient
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MUST ensure that the real bare JID of the sending occupant is the same as
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the real bare JID of the previous reaction message, e.g. by keeping track
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of leave/join presences.
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</p>
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<p>
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If a message containing a <reactions> element arrives delayed, which
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means it carries a <delay/> element, as defined in &xep0203; it SHOULD
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only be accepted, if no newer reaction from the same sender was already
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accepted.
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</p>
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</section2>
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<section2 topic='Using the correct ID' anchor='business-id'>
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<p>
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For messages of type 'groupchat', the stanza's 'id' attribute MUST NOT be
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used for reactions. Instead, in group chat situations, the ID assigned to
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the stanza by the group chat itself must be used. This is discovered in a
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<stanza-id> element with a 'by' attribute that matches the bare JID
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of the group chat, as defined in &xep0359;.
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</p>
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<p>
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This implies that group chat messages without a &xep0359; stanza-id cannot
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be reacted to.
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</p>
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<p>
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For other message types the sender should use the 'id' from a &xep0359;
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<origin-id> if present, or the value of the 'id' attribute on the
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<message> otherwise.
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</p>
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</section2>
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</section1>
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<section1 topic='IANA Considerations' anchor='iana'>
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<p>This document requires no interaction with &IANA;.</p>
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</section1>
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<section1 topic='XMPP Registrar Considerations' anchor='registrar'>
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<section2 topic='Protocol Namespaces' anchor='ns'>
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<p>The ®ISTRAR; includes 'urn:xmpp:reactions:0' in its registry of protocol namespaces (see &NAMESPACES;).</p>
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<ul>
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<li>urn:xmpp:reactions:0</li>
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</ul>
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</section2>
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</section1>
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</xep>
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