[Pidgin] #4650: Use XEP-0115: Entity Capabilities e.g. to not send XHTML-IM content, Chat State Notificiations

[Pidgin]

#4650: Use XEP-0115: Entity Capabilities e.g. to not send XHTML-IM content, Chat
State Notificiations
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 Reporter:  spike411                     |        Owner:  darkrain42
     Type:  defect                       |       Status:  closed    
Milestone:  2.6.0                        |    Component:  XMPP      
  Version:                               |   Resolution:  fixed     
 Keywords:  xmpp, caps, xhtml, xhtml-im  |  
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Comment(by darkrain42 at pidgin.im):

 (In [cec487e50b3df746ae8b23771513bf85734f618d]):[[BR]]
 For contacts who advertise Entity Caps, check for XHTML-IM support. Refs
 #4650.

 For backward-compatibility (and what I, as someone who knows that
 Jabber supports rich-text, would expect), continue sending it if the
 contact is offline (i.e. not on the roster).

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Ticket URL: <http://developer.pidgin.im/ticket/4650#comment:3>
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