Support Japanese button emojis (such as ㊗️)

[MugiSus]

EN

Note that even most browsing apps cannot display ㊗️ 0x3297 0xFE0F and ㊗ 0x3297 correctly.

Expected behavior:

splitGraphemes('㊗️') // ['㊗️']
splitGraphemes("㊗️㊙️🈂️🈚️🈯️🈷️") // ["㊗️", "㊙️", "🈂️", "🈚️", "🈯️", "🈷️"]

Actual behavior:

splitGraphemes('㊗️') // ['㊗', '️'(0xFE0F Emoji Variation Sequence)]
splitGraphemes("㊗️㊙️🈂️🈚️🈯️🈷️") // ["㊗", "️", "㊙", "️", "🈂", "️", "🈚", "️", "🈯", "️", "🈷", "️"]

㊗, ㊙ are included in Unicode 0x3200-0x32FF Enclosed CJK Letters and Months, and 🈂, 🈚, 🈯, 🈷 are included in Unicode 0x1F200-0x1F2FF Enclosed Ideographic Supplement, so I added the range 0x3200-0x32FF and 0x1F200-0x1F2FF to the emojiRange array in src/emoji.js.

const emojiRange = [
  '[\\u{2600}-\\u{26FF}]', // Miscellaneous Symbols
  ...
  '[\\u{3200}-\\u{32FF}]', // Enclosed CJK Letters and Months
  '[\\u{1F200}-\\u{1F2FF}]', // Enclosed Ideographic Supplement
  ...
  '[\\u{1F900}-\\u{1F9FF}]' // Supplemental Symbols and Pictographs
]

P.S.

I noticed same issue also happens on some of these emoji (Unicode.org emoji-varians) which would be incorrectly splitted into a plain symbol and 0xFE0F, so I assume there is a lot more things to do, but maybe not in this PR.

JP

赤丸に白文字で㊗️の絵文字が「㊗0x3297」と「絵文字バリエーションシーケンス0xFE0F」に分割されてしまっていたので、㊗, ㊙ を含むEnclosed CJK Letters and Monthsと同様の問題に遭遇している 🈂, 🈚, 🈯, 🈷 を含むEnclosed Ideographic Supplementをsrc/emoji.jsのemojiRangeに追加しました。

[daiiz]

すごい！ ありがとうございます。
以下2点、対応できそうでしたらお願いします。

• packge-lock.jsonをdiffに含めない
• 0xFE0Fを使わない場合にも正しく1文字として区切られることのテストを追加