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[ietf-822] A "Reaction" strawman to throw into the mix

2020-10-30 00:49:44
I scribbled this up in about 20 minutes, stealing a couple of pieces from Dave's document. If people think there is any use in considering this approach, I'll write it up as a proper draft. Otherwise, I'm happy to drop it. It seems more elegant to me than either the header field or the Content-Disposition proposals, simply because it reuses existing pieces of infrastructure that seem to fit this use, but to paraphrase the old saying: elegance and a $1.85 will get you a cup of Starbucks coffee. If nobody is interested, I'm happy to support the Content-Disposition approach; seems reasonable. But just in case, for your perusal:

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Message Reaction

Abstract

This specification provides protocol for an MUA to send a user "reaction" in response to a message, and for an MUA to receive and display to a user a received "reaction", by extending the Message Disposition Notification [RFC8098] to include a "reaction" disposition type and appropriate instructions for its use.

1. Introduction

Blah blah blah

2. Reaction Disposition Type

This specification adds a new disposition type to the disposition types specified in [RFC8098]:

   disposition-type /= "reaction"

The "reaction" disposition type is always followed by one or two disposition modifiers: A reaction emoji and/or a textual reaction word. The disposition modifier is extended as follows:

   disposition-modifier /= reaction-word / reaction-emoji
   reaction-word = Atom
   reaction-emoji = emoji_sequence ; defined in [Emoji-Seq]

base-emojis = thumbs-up / thumbs-down / grinning-face / frowning-face / crying-face

   thumbs-up = {U+1F44D}
   thumbs-down = {U+1F44E}
   grinning-face = {U+1F600}
   frowning-face = {U+2639}
   crying-face = {U+1F622}

   base-words = "Like" / "Dislike" / "Happy" / "Unhappy" / "Sad"

When the reaction-emoji appears, it must be encoded as an encoded-word [RFC2047].

When the "reaction" disposition type is used, the disposition action mode is always "manual-action" and the disposition sending mode is always "MDN-sent-manually".

3. The rest of the message

The text portion of a multipart/report message which includes a "reaction" disposition notification should include some simple text that can be displayed to the user describing the reaction for MUAs that do not implement this specification. For example:

   Pete Resnick reacted to your message with a "Like" (😀).

For ease of displaying the message to the user of MUAs that do not implement this specification, it is useful to form the "Subject:" field of the message as if it were a reply to the original message (e.g., prepend the original subject with "Re: ") and to include the original-message-id in the "In-Reply-To:" and "References:" fields.

MUAs that implement this specification can display adornments on the original message (found by using the original-message-id field in the disposition notification) indicating the reaction, without displaying the multipart/report message directly to the user.

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pr
--
Pete Resnick https://www.episteme.net/
All connections to the world are tenuous at best

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