emoji-extracto可以从/System/Library/Fots/AppleColorEmoji.ttf文件中提取高分辨率的emoji表情图片。
使用方法：
$ file /System/Library/Fots/Apple\ Color\ Emoji.ttf/System/Library/Fots/Apple Color Emoji.ttf: TrueType fot data$ ruby emoji_extractor.rb$ ls images20x20 32x32 40x40 48x48 64x64 96x96 160x160$ file images/160x160/1.pgimages/160x160/1.pg: PNG image data, 160 x 160, 8-bit/color RGBA, o-iterlaced
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