Enter still sends one message at a time and waits for the Host, but the
editor stays editable meanwhile: typing, paste, completion, and new
attachments go to the next message, and only another send waits. Once the
Host accepts the message, its attachments leave the draft and its text
leaves the editor: the whole draft while it still equals the sent text,
only the sent text and the whitespace after it when the user added text
after it, and nothing when the user changed the sent text itself. A
running Session keeps Stop beside the sending control, and Workspace
selection leaves a draft with a submission in flight in its Session.
Yichen Jiang
7cf67a2dbf