rfc9078v2.txt		rfc9078.txt
	Internet Engineering Task Force (IETF) D. Crocker		Internet Engineering Task Force (IETF) D. Crocker
	Request for Comments: 9078 Brandenburg InternetWorking		Request for Comments: 9078 Brandenburg InternetWorking
	Category: Experimental R. Signes		Category: Experimental R. Signes
	ISSN: 2070-1721 Fastmail		ISSN: 2070-1721 Fastmail
	N. Freed		N. Freed
	Oracle		Oracle
	July 2021		August 2021
	Reaction: Indicating Summary Reaction to a Message		Reaction: Indicating Summary Reaction to a Message
	Abstract		Abstract
	The popularity of social media has led to user comfort with easily		The popularity of social media has led to user comfort with easily
	signaling basic reactions to an author's posting, such as with a		signaling basic reactions to an author's posting, such as with a
	'thumbs up' or 'smiley' graphic. This specification permits a		'thumbs up' or 'smiley' graphic. This specification permits a
	similar facility for Internet Mail.		similar facility for Internet Mail.
	skipping to change at line 150 ¶		skipping to change at line 150 ¶
	base-emojis = thumbs-up / thumbs-down / grinning-face /		base-emojis = thumbs-up / thumbs-down / grinning-face /
	frowning-face / crying-face		frowning-face / crying-face
	; Basic set of emojis, drawn from [Emoji-Seq]		; Basic set of emojis, drawn from [Emoji-Seq]
	; thumbs-up = {U+1F44D}		; thumbs-up = {U+1F44D}
	; thumbs-down = {U+1F44E}		; thumbs-down = {U+1F44E}
	; grinning-face = {U+1F600}		; grinning-face = {U+1F600}
	; frowning-face = {U+2639}		; frowning-face = {U+2639}
	; crying-face = {U+1F622}		; crying-face = {U+1F622}
	The part-content is either the entire content portion of a message's		The part-content is either the message's single MIME body or the
	single MIME body or the content portion of the first MIME multipart		content portion of the first MIME multipart body part.
	body part that constitutes a message's body.
	The ABNF rule emoji-sequence is inherited from [Emoji-Seq]. It		The ABNF rule emoji-sequence is inherited from [Emoji-Seq]. It
	defines a set of Unicode code point sequences, which must then be		defines a set of Unicode code point sequences, which must then be
	encoded as UTF-8. Each sequence forms a single pictograph. The BNF		encoded as UTF-8. Each sequence forms a single pictograph. The BNF
	syntax used in [Emoji-Seq] differs from [ABNF] and MUST be		syntax used in [Emoji-Seq] differs from [ABNF] and MUST be
	interpreted as used in Unicode documentation. The referenced		interpreted as used in Unicode documentation. The referenced
	document describes these as sequences of code points.		document describes these as sequences of code points.
	| Note: The part-content can first be parsed into candidate		| Note: The part-content can first be parsed into candidate
	| reactions, separated by WSP. Each candidate reaction that does		| reactions, separated by WSP. Each candidate reaction that does
	skipping to change at line 342 ¶		skipping to change at line 341 ¶
	Description: Permit a recipient to respond by signaling basic		Description: Permit a recipient to respond by signaling basic
	reactions to an author's posting, such as with a 'thumbs up' or		reactions to an author's posting, such as with a 'thumbs up' or
	'smiley' graphic		'smiley' graphic
	8. Experimental Goals		8. Experimental Goals
	The basic, email-specific mechanics for this capability are well		The basic, email-specific mechanics for this capability are well
	established and well understood. Points of concern, therefore, are:		established and well understood. Points of concern, therefore, are:
	* Technical issues in using emojis within a message body part		* Technical issues in using emojis within a message body
	* Market interest		* Market interest
	* Usability		* Usability
	So the questions to answer for this Experimental specification are:		So the questions to answer for this Experimental specification are:
	* Is there demonstrated interest by MUA developers?		* Is there demonstrated interest by MUA developers?
	* If MUA developers add this capability, is it used by authors?		* If MUA developers add this capability, is it used by authors?
End of changes. 3 change blocks.
	5 lines changed or deleted		4 lines changed or added
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