Women/men holding hands are not exposed as sequences

[muan]

This is due to how the data exposes these sequences. See how people holding hands: light skin tone is made up by 7 code points, while woman and man holding hands: light skin tone has only 2 code points.

1F9D1 200D 1F91D 200D 1F9D1                ; fully-qualified     # 🧑‍🤝‍🧑 E12.1 people holding hands
1F9D1 1F3FB 200D 1F91D 200D 1F9D1 1F3FB    ; fully-qualified     # 🧑🏻‍🤝‍🧑🏻 E12.1 people holding hands: light skin tone
1F9D1 1F3FB 200D 1F91D 200D 1F9D1 1F3FC    ; fully-qualified     # 🧑🏻‍🤝‍🧑🏼 E12.1 people holding hands: light skin tone, medium-light skin tone
...
1F46D                                      ; fully-qualified     # 👭 E2.0 women holding hands
1F46D 1F3FB                                ; fully-qualified     # 👭🏻 E12.1 women holding hands: light skin tone
1F469 1F3FB 200D 1F91D 200D 1F469 1F3FC    ; fully-qualified     # 👩🏻‍🤝‍👩🏼 E12.1 women holding hands: light skin tone, medium-light skin tone
...
1F46B                                      ; fully-qualified     # 👫 E2.0 woman and man holding hands
1F46B 1F3FB                                ; fully-qualified     # 👫🏻 E12.1 woman and man holding hands: light skin tone
1F469 1F3FB 200D 1F91D 200D 1F468 1F3FC    ; fully-qualified     # 👩🏻‍🤝‍👨🏼 E12.1 woman and man holding hands: light skin tone, medium-light skin tone
...
1F46C                                      ; fully-qualified     # 👬 E2.0 men holding hands
1F46C 1F3FB                                ; fully-qualified     # 👬🏻 E12.1 men holding hands: light skin tone
1F468 1F3FB 200D 1F91D 200D 1F468 1F3FC    ; fully-qualified     # 👨🏻‍🤝‍👨🏼 E12.1 men holding hands: light skin tone, medium-light skin tone
...

It seems to me it'd be on the implementer of skin tone support to make sure 👭🏻(👭,🏻) and 👩🏻‍🤝‍👩🏻(👩,🏻,‍,🤝,‍,👩,🏻) are displayed the same, or know that when there are more than one skin tone options, do break them into sequences.

Test cases:

sequence	Windows 10	iOS 13.2	Android 10.0
👭(Ⓒ)
👩‍🤝‍👩(ⒸⓏⒸⓏⒸ)		(🆖)	(🆖)
👭🏻(Ⓒ 🏿)
👩🏻‍🤝‍👩🏻(Ⓒ 🏿ⓏⒸⓏⒸ 🏿)			(🆖)
👩🏻‍🤝‍👩🏼(Ⓒ 🏿ⓏⒸⓏⒸ 🏿)			(🆖)
👩🏼‍🤝‍👩🏻(Ⓒ 🏿ⓏⒸⓏⒸ 🏿)

To summarize–

• Windows supports all possible variations, including ones not listed in the Unicode list.
• Apple supports variations listed in the Unicode list.
• Android selectively support the minimum number of variations that can be made up by the skin tones, and orders matter. In the test case above, you can see that "light + medium light" doesn't work, but "medium light + light" works. (As this screenshot of the keyboard shows)

Potential fixes:

1. 🤷‍♀

{
  "👭": {
    ..., 
    "sequence": "👩‍🤝‍👩", 
    "skin_tone_support": true
  }
}

2. Showing sequence by default

{
  "👭": {
    ..., 
    "name": "women_holding_hands",
    "skin_tone_support": true
  },
  "👩‍🤝‍👩": {
    ..., 
    "name": "women_holding_hands_sequence",
    "skin_tone_support": true
  }
}

3. 😷

{
  "👭": {
    ..., 
    "skin_tone_support": {
      "light": "👭🏻", 
      "light_medium_light": "👩🏻‍🤝‍👩🏼", 
      ...
    }
  }
}

4. 🤢 (more than double the size of the JSON file)

{
  "👭🏻": {...},
  "👭🏻": {...},
  "👩🏻‍🤝‍👩🏼": {...},
}