Emoji: add generated images; fix up text document to match inconsiste…

…ncies found during the image-building process.
n8willis · Jul 21, 2022 · 4f39908 · 4f39908
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diff --git a/errata.md b/errata.md
@@ -11,6 +11,9 @@ specification documents.
       - [ZWJ and ZWNJ](#zwj-and-zwnj)
 	      - [Scope of ZWJ and ZWNJ](#scope-of-zwj-and-zwnj)
 	      - [ZWJ in redundant ligature lookups](#zwj-in-redundant-ligature-lookups)
+      - [Emoji](#emoji)
+	      - [Skin-tone permutations](#skin-tone-permutations)
+		  - [Gender permutations](#gender-permutations)
   - [OpenType](#opentype)
       - [Null offsets in GSUB and GPOS](#null-offsets-in-gsub-and-gpos)
       - [Sorting of GSUB and GPOS lookups](#sorting-of-gsub-and-gpos-lookups)
@@ -73,6 +76,38 @@ duplicates the effects of the existing "f,i" ligature lookup.
 Using ZWJ within lookup patterns in the manner suggested by the
 "Implementation Notes" is not common practice. 
 
+### Emoji ###
+
+#### Skin-tone permutations ####
+
+It is unclear whether ZWJ multi-person group emoji sequences are
+expected to include combinations where some emoji in the sequence are
+followed by a Fitzpatrick skin-tone modifier but other emoji in the
+sequence are not followed by a Fitzpatrick skin-tone modifier.
+
+For example, it is unclear whether the sequence
+"Man,ZWJ,Handshake,Man,SkinTone-2" constitues a valid ZWJ "Couple
+holding hands" sequence.
+
+
+#### Gender permutations ####
+
+It is unclear whether ZWJ multi-person group emoji sequences are
+expected to include combinations where some emoji in the sequence are
+are an explicit gender but other emoji in the sequence are not
+explicit gender.
+
+For example, it is unclear whether the sequence
+"Man,ZWJ,Handshake,Person" constitues a valid ZWJ "Couple
+holding hands" sequence.
+
+It is also unclear whether the ZWJ multi-person family sequence must
+have explicit gender-ordering for the adult humans depicted.
+
+For example, it is unclear whether the sequence
+"Man,ZWJ,Woman,ZWJ,Girl" should be rendered identically to the
+sequence "Woman,ZWJ,Man,ZWJ,Girl".
+
 
 ## OpenType ##
 

diff --git a/images/emoji/ZZZ.png b/images/emoji/ZZZ.png
diff --git a/images/emoji/airplane.png b/images/emoji/airplane.png
diff --git a/images/emoji/b-isolate.png b/images/emoji/b-isolate.png
diff --git a/images/emoji/blank-tag-high.png b/images/emoji/blank-tag-high.png
diff --git a/images/emoji/blank-tag-low.png b/images/emoji/blank-tag-low.png
diff --git a/images/emoji/blank-tag.png b/images/emoji/blank-tag.png
diff --git a/images/emoji/color-after.png b/images/emoji/color-after.png
diff --git a/images/emoji/color-before.png b/images/emoji/color-before.png
diff --git a/images/emoji/color-black.png b/images/emoji/color-black.png
diff --git a/images/emoji/color-sequence.png b/images/emoji/color-sequence.png
diff --git a/images/emoji/default-emoji-after.png b/images/emoji/default-emoji-after.png
diff --git a/images/emoji/default-emoji-before.png b/images/emoji/default-emoji-before.png
diff --git a/images/emoji/default-text-after.png b/images/emoji/default-text-after.png
diff --git a/images/emoji/default-text-before.png b/images/emoji/default-text-before.png
diff --git a/images/emoji/direction-rightward.png b/images/emoji/direction-rightward.png
diff --git a/images/emoji/dotted-square.png b/images/emoji/dotted-square.png
diff --git a/images/emoji/emoji-image-generation-log.md b/images/emoji/emoji-image-generation-log.md
diff --git a/images/emoji/emoji-pres-selector.png b/images/emoji/emoji-pres-selector.png
diff --git a/images/emoji/emoji-pres-sequence.png b/images/emoji/emoji-pres-sequence.png
diff --git a/images/emoji/emoji-presentation.png b/images/emoji/emoji-presentation.png
diff --git a/images/emoji/emoji-text-pres-before.png b/images/emoji/emoji-text-pres-before.png
diff --git a/images/emoji/end-isolate.png b/images/emoji/end-isolate.png
diff --git a/images/emoji/fallback-boy.png b/images/emoji/fallback-boy.png
diff --git a/images/emoji/fallback-generalperson.png b/images/emoji/fallback-generalperson.png
diff --git a/images/emoji/fallback-girl.png b/images/emoji/fallback-girl.png
diff --git a/images/emoji/fallback-man.png b/images/emoji/fallback-man.png
diff --git a/images/emoji/fallback-woman.png b/images/emoji/fallback-woman.png
diff --git a/images/emoji/fire.png b/images/emoji/fire.png
diff --git a/images/emoji/firetruck.png b/images/emoji/firetruck.png
diff --git a/images/emoji/fitzpatrick-2-text-fallback.png b/images/emoji/fitzpatrick-2-text-fallback.png
diff --git a/images/emoji/fitzpatrick-2.png b/images/emoji/fitzpatrick-2.png
diff --git a/images/emoji/fitzpatrick-3-text-fallback.png b/images/emoji/fitzpatrick-3-text-fallback.png
diff --git a/images/emoji/fitzpatrick-3.png b/images/emoji/fitzpatrick-3.png
diff --git a/images/emoji/fitzpatrick-4-text-fallback.png b/images/emoji/fitzpatrick-4-text-fallback.png
diff --git a/images/emoji/fitzpatrick-4.png b/images/emoji/fitzpatrick-4.png
diff --git a/images/emoji/fitzpatrick-5-text-fallback.png b/images/emoji/fitzpatrick-5-text-fallback.png
diff --git a/images/emoji/fitzpatrick-5.png b/images/emoji/fitzpatrick-5.png
diff --git a/images/emoji/fitzpatrick-6-text-fallback.png b/images/emoji/fitzpatrick-6-text-fallback.png
diff --git a/images/emoji/fitzpatrick-6.png b/images/emoji/fitzpatrick-6.png
diff --git a/images/emoji/flag-isolate.png b/images/emoji/flag-isolate.png
diff --git a/images/emoji/flag-un.png b/images/emoji/flag-un.png
diff --git a/images/emoji/g-isolate.png b/images/emoji/g-isolate.png
diff --git a/images/emoji/gendered-person-after.png b/images/emoji/gendered-person-after.png
diff --git a/images/emoji/gendered-person-before.png b/images/emoji/gendered-person-before.png
diff --git a/images/emoji/gendered-person-sequence-fallback.png b/images/emoji/gendered-person-sequence-fallback.png
diff --git a/images/emoji/gendered-person-sequence.png b/images/emoji/gendered-person-sequence.png
diff --git a/images/emoji/gendersign-female-fallback.png b/images/emoji/gendersign-female-fallback.png
diff --git a/images/emoji/gendersign-female.png b/images/emoji/gendersign-female.png
diff --git a/images/emoji/gendersign-male-fallback.png b/images/emoji/gendersign-male-fallback.png
diff --git a/images/emoji/gendersign-male.png b/images/emoji/gendersign-male.png
diff --git a/images/emoji/hair-bald.png b/images/emoji/hair-bald.png
diff --git a/images/emoji/hair-curly.png b/images/emoji/hair-curly.png
diff --git a/images/emoji/hair-red.png b/images/emoji/hair-red.png
diff --git a/images/emoji/hair-white.png b/images/emoji/hair-white.png
diff --git a/images/emoji/hairstyle-sequence.png b/images/emoji/hairstyle-sequence.png
diff --git a/images/emoji/hand-left.png b/images/emoji/hand-left.png
diff --git a/images/emoji/hand-right.png b/images/emoji/hand-right.png
diff --git a/images/emoji/handshake.png b/images/emoji/handshake.png
diff --git a/images/emoji/heart-on-fire-after.png b/images/emoji/heart-on-fire-after.png
diff --git a/images/emoji/heart.png b/images/emoji/heart.png
diff --git a/images/emoji/keycap-after.png b/images/emoji/keycap-after.png
diff --git a/images/emoji/keycap-before.png b/images/emoji/keycap-before.png
diff --git a/images/emoji/keycap-cek.png b/images/emoji/keycap-cek.png
diff --git a/images/emoji/keycap-sequence.png b/images/emoji/keycap-sequence.png
diff --git a/images/emoji/keycap-sequenceX.png b/images/emoji/keycap-sequenceX.png
diff --git a/images/emoji/kiss-mark.png b/images/emoji/kiss-mark.png
diff --git a/images/emoji/l-isolate.png b/images/emoji/l-isolate.png
diff --git a/images/emoji/modifier-after.png b/images/emoji/modifier-after.png
diff --git a/images/emoji/modifier-before.png b/images/emoji/modifier-before.png
diff --git a/images/emoji/modifier-sequence-fallback.png b/images/emoji/modifier-sequence-fallback.png
diff --git a/images/emoji/modifier-sequence.png b/images/emoji/modifier-sequence.png
diff --git a/images/emoji/multi-person-family-man-boy-after.png b/images/emoji/multi-person-family-man-boy-after.png
diff --git a/images/emoji/multi-person-family-man-boy-sequence.png b/images/emoji/multi-person-family-man-boy-sequence.png
diff --git a/images/emoji/multi-person-family-man-girl-girl-after.png b/images/emoji/multi-person-family-man-girl-girl-after.png
diff --git a/images/emoji/multi-person-family-man-girl-girl-sequence.png b/images/emoji/multi-person-family-man-girl-girl-sequence.png
diff --git a/images/emoji/multi-person-family-man-woman-girl-after.png b/images/emoji/multi-person-family-man-woman-girl-after.png
diff --git a/images/emoji/multi-person-family-man-woman-girl-sequence.png b/images/emoji/multi-person-family-man-woman-girl-sequence.png
diff --git a/images/emoji/multi-person-family-woman-woman-girl-boy-after.png b/images/emoji/multi-person-family-woman-woman-girl-boy-after.png
diff --git a/images/emoji/multi-person-family-woman-woman-girl-boy-sequence.png b/images/emoji/multi-person-family-woman-woman-girl-boy-sequence.png
diff --git a/images/emoji/multi-person-heart-sequence.png b/images/emoji/multi-person-heart-sequence.png
diff --git a/images/emoji/multi-person-heart-skintone-sequence.png b/images/emoji/multi-person-heart-skintone-sequence.png
diff --git a/images/emoji/multi-person-holding-hands-sequence-after.png b/images/emoji/multi-person-holding-hands-sequence-after.png
diff --git a/images/emoji/multi-person-holding-hands-sequence-woman-woman-after.png b/images/emoji/multi-person-holding-hands-sequence-woman-woman-after.png
diff --git a/images/emoji/multi-person-holding-hands-sequence-woman-woman-skintone-after.png b/images/emoji/multi-person-holding-hands-sequence-woman-woman-skintone-after.png
diff --git a/images/emoji/multi-person-holding-hands-sequence.png b/images/emoji/multi-person-holding-hands-sequence.png
diff --git a/images/emoji/multi-person-holding-hands-skintone-sequence.png b/images/emoji/multi-person-holding-hands-skintone-sequence.png
diff --git a/images/emoji/multi-person-kiss-sequence-after.png b/images/emoji/multi-person-kiss-sequence-after.png
diff --git a/images/emoji/multi-person-kiss-sequence-skintone-after.png b/images/emoji/multi-person-kiss-sequence-skintone-after.png
diff --git a/images/emoji/multi-person-kiss-sequence.png b/images/emoji/multi-person-kiss-sequence.png
diff --git a/images/emoji/multi-person-kiss-skintone-sequence.png b/images/emoji/multi-person-kiss-skintone-sequence.png
diff --git a/images/emoji/multi-person-man-heart-man-after.png b/images/emoji/multi-person-man-heart-man-after.png
diff --git a/images/emoji/multi-person-man-skintone-2-heart-man-skintone-2-after.png b/images/emoji/multi-person-man-skintone-2-heart-man-skintone-2-after.png
diff --git a/images/emoji/multi-person-shaking-hands-after.png b/images/emoji/multi-person-shaking-hands-after.png
diff --git a/images/emoji/multi-person-shaking-hands-sequence.png b/images/emoji/multi-person-shaking-hands-sequence.png
diff --git a/images/emoji/regional-flag-un-after.png b/images/emoji/regional-flag-un-after.png
diff --git a/images/emoji/regional-flag-un-before.png b/images/emoji/regional-flag-un-before.png
diff --git a/images/emoji/regional-flag-un-fallback.png b/images/emoji/regional-flag-un-fallback.png
diff --git a/images/emoji/regional-indicator-flag-sequence-un-fallback.png b/images/emoji/regional-indicator-flag-sequence-un-fallback.png
diff --git a/images/emoji/regional-indicator-flag-sequence-un.png b/images/emoji/regional-indicator-flag-sequence-un.png
diff --git a/images/emoji/right-arrow.png b/images/emoji/right-arrow.png
diff --git a/images/emoji/role-firefighter-man-after.png b/images/emoji/role-firefighter-man-after.png
diff --git a/images/emoji/role-firefighter-man-skintone-6-after.png b/images/emoji/role-firefighter-man-skintone-6-after.png
diff --git a/images/emoji/role-pilot-woman-after.png b/images/emoji/role-pilot-woman-after.png
diff --git a/images/emoji/role-pilot-woman-skintone-2-after.png b/images/emoji/role-pilot-woman-skintone-2-after.png
diff --git a/images/emoji/role-sequence-firefighter-skintone-6.png b/images/emoji/role-sequence-firefighter-skintone-6.png
diff --git a/images/emoji/role-sequence-firefighter.png b/images/emoji/role-sequence-firefighter.png
diff --git a/images/emoji/role-sequence-pilot-skintone-2.png b/images/emoji/role-sequence-pilot-skintone-2.png
diff --git a/images/emoji/role-sequence-pilot.png b/images/emoji/role-sequence-pilot.png
diff --git a/images/emoji/running-rightward.png b/images/emoji/running-rightward.png
diff --git a/images/emoji/running.png b/images/emoji/running.png
diff --git a/images/emoji/s-isolate.png b/images/emoji/s-isolate.png
diff --git a/images/emoji/skintone-2-text-fallback.png b/images/emoji/skintone-2-text-fallback.png
diff --git a/images/emoji/skintone-2.png b/images/emoji/skintone-2.png
diff --git a/images/emoji/skintone-3-text-fallback.png b/images/emoji/skintone-3-text-fallback.png
diff --git a/images/emoji/skintone-3.png b/images/emoji/skintone-3.png
diff --git a/images/emoji/skintone-4-text-fallback.png b/images/emoji/skintone-4-text-fallback.png
diff --git a/images/emoji/skintone-4.png b/images/emoji/skintone-4.png
diff --git a/images/emoji/skintone-5-text-fallback.png b/images/emoji/skintone-5-text-fallback.png
diff --git a/images/emoji/skintone-5.png b/images/emoji/skintone-5.png
diff --git a/images/emoji/skintone-6-text-fallback.png b/images/emoji/skintone-6-text-fallback.png
diff --git a/images/emoji/skintone-6.png b/images/emoji/skintone-6.png
diff --git a/images/emoji/skintone-fallback-2.png b/images/emoji/skintone-fallback-2.png
diff --git a/images/emoji/skintone-fallback-3.png b/images/emoji/skintone-fallback-3.png
diff --git a/images/emoji/skintone-fallback-4.png b/images/emoji/skintone-fallback-4.png
diff --git a/images/emoji/skintone-fallback-5.png b/images/emoji/skintone-fallback-5.png
diff --git a/images/emoji/skintone-fallback-6.png b/images/emoji/skintone-fallback-6.png
diff --git a/images/emoji/tag-b.png b/images/emoji/tag-b.png
diff --git a/images/emoji/tag-end.png b/images/emoji/tag-end.png
diff --git a/images/emoji/tag-flag-black.png b/images/emoji/tag-flag-black.png
diff --git a/images/emoji/tag-flag-sequence-wales.png b/images/emoji/tag-flag-sequence-wales.png
diff --git a/images/emoji/tag-flag-wales-after.png b/images/emoji/tag-flag-wales-after.png
diff --git a/images/emoji/tag-flag-wales-before.png b/images/emoji/tag-flag-wales-before.png
diff --git a/images/emoji/tag-g.png b/images/emoji/tag-g.png
diff --git a/images/emoji/tag-isolate-high.png b/images/emoji/tag-isolate-high.png
diff --git a/images/emoji/tag-isolate-low.png b/images/emoji/tag-isolate-low.png
diff --git a/images/emoji/tag-isolate.png b/images/emoji/tag-isolate.png
diff --git a/images/emoji/tag-l.png b/images/emoji/tag-l.png
diff --git a/images/emoji/tag-s.png b/images/emoji/tag-s.png
diff --git a/images/emoji/tag-w.png b/images/emoji/tag-w.png
diff --git a/images/emoji/text-pres-selector.png b/images/emoji/text-pres-selector.png
diff --git a/images/emoji/text-pres-sequence.png b/images/emoji/text-pres-sequence.png
diff --git a/images/emoji/text-presentation.png b/images/emoji/text-presentation.png
diff --git a/images/emoji/vs15.png b/images/emoji/vs15.png
diff --git a/images/emoji/vs16.png b/images/emoji/vs16.png
diff --git a/images/emoji/w-isolate.png b/images/emoji/w-isolate.png
diff --git a/images/emoji/woman-white-hair.png b/images/emoji/woman-white-hair.png
diff --git a/images/emoji/zwj-directionality-sequence.png b/images/emoji/zwj-directionality-sequence.png
diff --git a/images/emoji/zwj-sequence-heart-on-fire.png b/images/emoji/zwj-sequence-heart-on-fire.png
diff --git a/images/emoji/zwj.png b/images/emoji/zwj.png
diff --git a/images/emoji/zwnj.png b/images/emoji/zwnj.png