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// FREEBIE
pull/1/head
Matthew Chen 8 years ago
parent c6047b72b4
commit 0a926567ed
3 changed files with 127 additions and 159 deletions
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2
Scripts/emoji_ranges.py
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@ -70,7 +70,7 @@ if __name__ == '__main__':
# if last_range_end + 1 == range_start:
new_ranges = new_ranges[:-1]
print 'merging', last_range_start, last_range_end, 'and', range_start, range_end
new_ranges.append((last_range_start, range_end,))
new_ranges.append((last_range_start, max(range_end, last_range_end),))
continue
new_ranges.append((range_start, range_end,))

208
Signal/src/util/DisplayableText.swift
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@ -23,153 +23,64 @@ extension UnicodeScalar {
// Current Version:
// https://www.unicode.org/Public/emoji/6.0/emoji-data.txt
static let kEmojiRanges = [
EmojiRange(rangeStart:0x23, rangeEnd:0x23),
EmojiRange(rangeStart:0x2A, rangeEnd:0x2A),
EmojiRange(rangeStart:0x30, rangeEnd:0x39),
EmojiRange(rangeStart:0xA9, rangeEnd:0xA9),
EmojiRange(rangeStart:0xAE, rangeEnd:0xAE),
EmojiRange(rangeStart:0x200D, rangeEnd:0x200D),
EmojiRange(rangeStart:0x203C, rangeEnd:0x203C),
EmojiRange(rangeStart:0x2049, rangeEnd:0x2049),
EmojiRange(rangeStart:0x20D0, rangeEnd:0x20E3),
EmojiRange(rangeStart:0x2122, rangeEnd:0x2122),
EmojiRange(rangeStart:0x2139, rangeEnd:0x2139),
EmojiRange(rangeStart:0x2194, rangeEnd:0x2199),
EmojiRange(rangeStart:0x21A9, rangeEnd:0x21AA),
EmojiRange(rangeStart:0x231A, rangeEnd:0x231B),
EmojiRange(rangeStart:0x2328, rangeEnd:0x2328),
EmojiRange(rangeStart:0x2388, rangeEnd:0x2388),
EmojiRange(rangeStart:0x23CF, rangeEnd:0x23CF),
EmojiRange(rangeStart:0x23E9, rangeEnd:0x23F0),
EmojiRange(rangeStart:0x23F3, rangeEnd:0x23F3),
EmojiRange(rangeStart:0x23F8, rangeEnd:0x23FA),
EmojiRange(rangeStart:0x24C2, rangeEnd:0x24C2),
EmojiRange(rangeStart:0x25AA, rangeEnd:0x25AB),
EmojiRange(rangeStart:0x25B6, rangeEnd:0x25B6),
EmojiRange(rangeStart:0x25C0, rangeEnd:0x25C0),
EmojiRange(rangeStart:0x25FB, rangeEnd:0x25FE),
EmojiRange(rangeStart:0x2600, rangeEnd:0x260E),
EmojiRange(rangeStart:0x2611, rangeEnd:0x2611),
EmojiRange(rangeStart:0x2614, rangeEnd:0x261D),
EmojiRange(rangeStart:0x2620, rangeEnd:0x2620),
EmojiRange(rangeStart:0x2622, rangeEnd:0x2623),
EmojiRange(rangeStart:0x2626, rangeEnd:0x2626),
EmojiRange(rangeStart:0x262A, rangeEnd:0x262A),
EmojiRange(rangeStart:0x262E, rangeEnd:0x262F),
EmojiRange(rangeStart:0x2638, rangeEnd:0x263A),
EmojiRange(rangeStart:0x2640, rangeEnd:0x2640),
EmojiRange(rangeStart:0x2642, rangeEnd:0x2642),
EmojiRange(rangeStart:0x2648, rangeEnd:0x2653),
EmojiRange(rangeStart:0x2660, rangeEnd:0x2660),
EmojiRange(rangeStart:0x2663, rangeEnd:0x2663),
EmojiRange(rangeStart:0x2665, rangeEnd:0x2666),
EmojiRange(rangeStart:0x2668, rangeEnd:0x2668),
EmojiRange(rangeStart:0x2670, rangeEnd:0x267B),
EmojiRange(rangeStart:0x267E, rangeEnd:0x2693),
EmojiRange(rangeStart:0x2699, rangeEnd:0x2699),
EmojiRange(rangeStart:0x269B, rangeEnd:0x26AB),
EmojiRange(rangeStart:0x26B0, rangeEnd:0x26C8),
EmojiRange(rangeStart:0x26CE, rangeEnd:0x26D1),
EmojiRange(rangeStart:0x26D3, rangeEnd:0x26D4),
EmojiRange(rangeStart:0x26E2, rangeEnd:0x26EA),
EmojiRange(rangeStart:0x26F0, rangeEnd:0x26F3),
EmojiRange(rangeStart:0x26F5, rangeEnd:0x26F5),
EmojiRange(rangeStart:0x26F7, rangeEnd:0x26FA),
EmojiRange(rangeStart:0x26FD, rangeEnd:0x26FD),
EmojiRange(rangeStart:0x2700, rangeEnd:0x2702),
EmojiRange(rangeStart:0x2705, rangeEnd:0x2705),
EmojiRange(rangeStart:0x2708, rangeEnd:0x270F),
EmojiRange(rangeStart:0x2712, rangeEnd:0x2712),
EmojiRange(rangeStart:0x2714, rangeEnd:0x2714),
EmojiRange(rangeStart:0x2716, rangeEnd:0x2716),
EmojiRange(rangeStart:0x271D, rangeEnd:0x271D),
EmojiRange(rangeStart:0x2721, rangeEnd:0x2721),
EmojiRange(rangeStart:0x2728, rangeEnd:0x2728),
EmojiRange(rangeStart:0x2733, rangeEnd:0x2734),
EmojiRange(rangeStart:0x2744, rangeEnd:0x2744),
EmojiRange(rangeStart:0x2747, rangeEnd:0x2747),
EmojiRange(rangeStart:0x274C, rangeEnd:0x274C),
EmojiRange(rangeStart:0x274E, rangeEnd:0x274E),
EmojiRange(rangeStart:0x2753, rangeEnd:0x2755),
EmojiRange(rangeStart:0x2757, rangeEnd:0x2757),
EmojiRange(rangeStart:0x2763, rangeEnd:0x2767),
EmojiRange(rangeStart:0x2795, rangeEnd:0x2797),
EmojiRange(rangeStart:0x27A1, rangeEnd:0x27A1),
EmojiRange(rangeStart:0x27B0, rangeEnd:0x27B0),
EmojiRange(rangeStart:0x27BF, rangeEnd:0x27BF),
EmojiRange(rangeStart:0x2934, rangeEnd:0x2935),
EmojiRange(rangeStart:0x2B05, rangeEnd:0x2B07),
EmojiRange(rangeStart:0x2B1B, rangeEnd:0x2B1C),
EmojiRange(rangeStart:0x2B50, rangeEnd:0x2B50),
EmojiRange(rangeStart:0x2B55, rangeEnd:0x2B55),
EmojiRange(rangeStart:0x3030, rangeEnd:0x3030),
EmojiRange(rangeStart:0x303D, rangeEnd:0x303D),
EmojiRange(rangeStart:0x3297, rangeEnd:0x3297),
EmojiRange(rangeStart:0x3299, rangeEnd:0x3299),
EmojiRange(rangeStart:0xFE00, rangeEnd:0xFE0F),
EmojiRange(rangeStart:0x1F000, rangeEnd:0x1F004),
EmojiRange(rangeStart:0x1F02C, rangeEnd:0x1F0FF),
EmojiRange(rangeStart:0x1F10D, rangeEnd:0x1F10F),
EmojiRange(rangeStart:0x1F12F, rangeEnd:0x1F12F),
EmojiRange(rangeStart:0x1F16C, rangeEnd:0x1F171),
EmojiRange(rangeStart:0x1F17E, rangeEnd:0x1F17F),
EmojiRange(rangeStart:0x1F18E, rangeEnd:0x1F18E),
EmojiRange(rangeStart:0x1F191, rangeEnd:0x1F19A),
EmojiRange(rangeStart:0x1F1AD, rangeEnd:0x1F1FF),
EmojiRange(rangeStart:0x1F201, rangeEnd:0x1F20F),
EmojiRange(rangeStart:0x1F21A, rangeEnd:0x1F21A),
EmojiRange(rangeStart:0x1F22F, rangeEnd:0x1F22F),
EmojiRange(rangeStart:0x1F232, rangeEnd:0x1F23A),
EmojiRange(rangeStart:0x1F23C, rangeEnd:0x1F23F),
EmojiRange(rangeStart:0x1F249, rangeEnd:0x1F385),
EmojiRange(rangeStart:0x1F394, rangeEnd:0x1F397),
EmojiRange(rangeStart:0x1F399, rangeEnd:0x1F39B),
EmojiRange(rangeStart:0x1F39E, rangeEnd:0x1F3C7),
EmojiRange(rangeStart:0x1F3CA, rangeEnd:0x1F3F4),
EmojiRange(rangeStart:0x1F3F7, rangeEnd:0x1F450),
EmojiRange(rangeStart:0x1F466, rangeEnd:0x1F469),
EmojiRange(rangeStart:0x1F46E, rangeEnd:0x1F46E),
EmojiRange(rangeStart:0x1F470, rangeEnd:0x1F478),
EmojiRange(rangeStart:0x1F47C, rangeEnd:0x1F47C),
EmojiRange(rangeStart:0x1F481, rangeEnd:0x1F483),
EmojiRange(rangeStart:0x1F485, rangeEnd:0x1F487),
EmojiRange(rangeStart:0x1F4AA, rangeEnd:0x1F4AA),
EmojiRange(rangeStart:0x1F4F8, rangeEnd:0x1F570),
EmojiRange(rangeStart:0x1F573, rangeEnd:0x1F575),
EmojiRange(rangeStart:0x1F57A, rangeEnd:0x1F587),
EmojiRange(rangeStart:0x1F58A, rangeEnd:0x1F58D),
EmojiRange(rangeStart:0x1F590, rangeEnd:0x1F590),
EmojiRange(rangeStart:0x1F595, rangeEnd:0x1F596),
EmojiRange(rangeStart:0x1F5A4, rangeEnd:0x1F5A8),
EmojiRange(rangeStart:0x1F5B1, rangeEnd:0x1F5B2),
EmojiRange(rangeStart:0x1F5BC, rangeEnd:0x1F5BC),
EmojiRange(rangeStart:0x1F5C2, rangeEnd:0x1F5C4),
EmojiRange(rangeStart:0x1F5D1, rangeEnd:0x1F5D3),
EmojiRange(rangeStart:0x1F5DC, rangeEnd:0x1F5DE),
EmojiRange(rangeStart:0x1F5E1, rangeEnd:0x1F5E1),
EmojiRange(rangeStart:0x1F5E3, rangeEnd:0x1F5E3),
EmojiRange(rangeStart:0x1F5E8, rangeEnd:0x1F5E8),
EmojiRange(rangeStart:0x1F5EF, rangeEnd:0x1F5EF),
EmojiRange(rangeStart:0x1F5F3, rangeEnd:0x1F5F3),
EmojiRange(rangeStart:0x1F5FA, rangeEnd:0x1F64F),
EmojiRange(rangeStart:0x1F680, rangeEnd:0x1F6A3),
EmojiRange(rangeStart:0x1F6B4, rangeEnd:0x1F6B6),
EmojiRange(rangeStart:0x1F6C0, rangeEnd:0x1F6C0),
EmojiRange(rangeStart:0x1F6C6, rangeEnd:0x1F6CC),
EmojiRange(rangeStart:0x1F6D0, rangeEnd:0x1F6E9),
EmojiRange(rangeStart:0x1F6EB, rangeEnd:0x1F6FF),
EmojiRange(rangeStart:0x1F774, rangeEnd:0x1F77F),
EmojiRange(rangeStart:0x1F7D5, rangeEnd:0x1F7FF),
EmojiRange(rangeStart:0x1F80C, rangeEnd:0x1F80F),
EmojiRange(rangeStart:0x1F848, rangeEnd:0x1F84F),
EmojiRange(rangeStart:0x1F85A, rangeEnd:0x1F85F),
EmojiRange(rangeStart:0x1F888, rangeEnd:0x1F88F),
EmojiRange(rangeStart:0x1F8AE, rangeEnd:0x1F926),
EmojiRange(rangeStart:0x1F928, rangeEnd:0x1F93A),
EmojiRange(rangeStart:0x1F93C, rangeEnd:0x1F945),
EmojiRange(rangeStart:0x1F947, rangeEnd:0x1F9DD),
EmojiRange(rangeStart:0x1F9E7, rangeEnd:0x1FFFD),
EmojiRange(rangeStart:0xE0020, rangeEnd:0xE007F)
EmojiRange(rangeStart:0x23, rangeEnd:0x23),
EmojiRange(rangeStart:0x2A, rangeEnd:0x2A),
EmojiRange(rangeStart:0x30, rangeEnd:0x39),
EmojiRange(rangeStart:0xA9, rangeEnd:0xA9),
EmojiRange(rangeStart:0xAE, rangeEnd:0xAE),
EmojiRange(rangeStart:0x200D, rangeEnd:0x200D),
EmojiRange(rangeStart:0x203C, rangeEnd:0x203C),
EmojiRange(rangeStart:0x2049, rangeEnd:0x2049),
EmojiRange(rangeStart:0x20D0, rangeEnd:0x20FF),
EmojiRange(rangeStart:0x2122, rangeEnd:0x2122),
EmojiRange(rangeStart:0x2139, rangeEnd:0x2139),
EmojiRange(rangeStart:0x2194, rangeEnd:0x2199),
EmojiRange(rangeStart:0x21A9, rangeEnd:0x21AA),
EmojiRange(rangeStart:0x231A, rangeEnd:0x231B),
EmojiRange(rangeStart:0x2328, rangeEnd:0x2328),
EmojiRange(rangeStart:0x2388, rangeEnd:0x2388),
EmojiRange(rangeStart:0x23CF, rangeEnd:0x23CF),
EmojiRange(rangeStart:0x23E9, rangeEnd:0x23F3),
EmojiRange(rangeStart:0x23F8, rangeEnd:0x23FA),
EmojiRange(rangeStart:0x24C2, rangeEnd:0x24C2),
EmojiRange(rangeStart:0x25AA, rangeEnd:0x25AB),
EmojiRange(rangeStart:0x25B6, rangeEnd:0x25B6),
EmojiRange(rangeStart:0x25C0, rangeEnd:0x25C0),
EmojiRange(rangeStart:0x25FB, rangeEnd:0x25FE),
EmojiRange(rangeStart:0x2600, rangeEnd:0x27BF),
EmojiRange(rangeStart:0x2934, rangeEnd:0x2935),
EmojiRange(rangeStart:0x2B05, rangeEnd:0x2B07),
EmojiRange(rangeStart:0x2B1B, rangeEnd:0x2B1C),
EmojiRange(rangeStart:0x2B50, rangeEnd:0x2B50),
EmojiRange(rangeStart:0x2B55, rangeEnd:0x2B55),
EmojiRange(rangeStart:0x3030, rangeEnd:0x3030),
EmojiRange(rangeStart:0x303D, rangeEnd:0x303D),
EmojiRange(rangeStart:0x3297, rangeEnd:0x3297),
EmojiRange(rangeStart:0x3299, rangeEnd:0x3299),
EmojiRange(rangeStart:0xFE00, rangeEnd:0xFE0F),
EmojiRange(rangeStart:0x1F000, rangeEnd:0x1F0FF),
EmojiRange(rangeStart:0x1F10D, rangeEnd:0x1F10F),
EmojiRange(rangeStart:0x1F12F, rangeEnd:0x1F12F),
EmojiRange(rangeStart:0x1F16C, rangeEnd:0x1F171),
EmojiRange(rangeStart:0x1F17E, rangeEnd:0x1F17F),
EmojiRange(rangeStart:0x1F18E, rangeEnd:0x1F18E),
EmojiRange(rangeStart:0x1F191, rangeEnd:0x1F19A),
EmojiRange(rangeStart:0x1F1AD, rangeEnd:0x1F1FF),
EmojiRange(rangeStart:0x1F201, rangeEnd:0x1F20F),
EmojiRange(rangeStart:0x1F21A, rangeEnd:0x1F21A),
EmojiRange(rangeStart:0x1F22F, rangeEnd:0x1F22F),
EmojiRange(rangeStart:0x1F232, rangeEnd:0x1F23A),
EmojiRange(rangeStart:0x1F23C, rangeEnd:0x1F23F),
EmojiRange(rangeStart:0x1F249, rangeEnd:0x1F64F),
EmojiRange(rangeStart:0x1F680, rangeEnd:0x1F6FF),
EmojiRange(rangeStart:0x1F774, rangeEnd:0x1F77F),
EmojiRange(rangeStart:0x1F7D5, rangeEnd:0x1F7FF),
EmojiRange(rangeStart:0x1F80C, rangeEnd:0x1F80F),
EmojiRange(rangeStart:0x1F848, rangeEnd:0x1F84F),
EmojiRange(rangeStart:0x1F85A, rangeEnd:0x1F85F),
EmojiRange(rangeStart:0x1F888, rangeEnd:0x1F88F),
EmojiRange(rangeStart:0x1F8AE, rangeEnd:0x1FFFD),
EmojiRange(rangeStart:0xE0020, rangeEnd:0xE007F)
]
var isEmoji: Bool {
@ -211,17 +122,14 @@ extension String {
}
var isSingleEmoji: Bool {
return glyphCount == 1 && containsEmoji
}
var containsEmoji: Bool {
return unicodeScalars.contains { $0.isEmoji }
}
var containsOnlyEmoji: Bool {
return !isEmpty
&& !unicodeScalars.contains(where: {
!$0.isEmoji

76
Signal/test/util/DisplayableTextFilterTest.swift
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@ -17,24 +17,84 @@ class DisplayableTextTest: XCTestCase {
}
func testDisplayableText() {
// Ignore default byte size limitations to test other filtering behaviors
let filter = DisplayableText()
// show plain text
let boringText = "boring text"
XCTAssertEqual(boringText, filter.displayableText(boringText))
XCTAssertEqual(boringText, DisplayableText.displayableText(boringText))
// show high byte emojis
let emojiText = "🇹🇹🌼🇹🇹🌼🇹🇹"
XCTAssertEqual(emojiText, filter.displayableText(emojiText))
XCTAssertEqual(emojiText, DisplayableText.displayableText(emojiText))
// show normal diacritic usage
let diacriticalText = "Příliš žluťoučký kůň úpěl ďábelské ódy."
XCTAssertEqual(diacriticalText, filter.displayableText(diacriticalText))
XCTAssertEqual(diacriticalText, DisplayableText.displayableText(diacriticalText))
// filter excessive diacritics
XCTAssertEqual("HAVING TROUBLE READING TEXT?", filter.displayableText("H҉̸̧͘͠A͢͞V̛̛I̴̸N͏̕͏G҉̵͜͏͢ ̧̧́T̶̛͘͡R̸̵̨̢̀O̷̡U͡҉B̶̛͢͞L̸̸͘͢͟É̸ ̸̛͘͏R͟È͠͞A̸͝Ḑ̕͘͜I̵͘҉͜͞N̷̡̢͠G̴͘͠ ͟͞T͏̢́͡È̀X̕҉̢̀T̢͠?̕͏̢͘͢") )
XCTAssertEqual("HAVING TROUBLE READING TEXT?", DisplayableText.displayableText("H҉̸̧͘͠A͢͞V̛̛I̴̸N͏̕͏G҉̵͜͏͢ ̧̧́T̶̛͘͡R̸̵̨̢̀O̷̡U͡҉B̶̛͢͞L̸̸͘͢͟É̸ ̸̛͘͏R͟È͠͞A̸͝Ḑ̕͘͜I̵͘҉͜͞N̷̡̢͠G̴͘͠ ͟͞T͏̢́͡È̀X̕҉̢̀T̢͠?̕͏̢͘͢") )
XCTAssertEqual("LGO!", DisplayableText.displayableText("L̷̳͔̲͝Ģ̵̮̯̤̩̙͍̬̟͉̹̘̹͍͈̮̦̰̣͟͝O̶̴̮̻̮̗͘͡!̴̷̟͓͓"))
}
func testGlyphCount() {
// Plain text
XCTAssertEqual("boring text".glyphCount, 11)
// Emojis
XCTAssertEqual("🇹🇹🌼🇹🇹🌼🇹🇹".glyphCount, 5)
XCTAssertEqual("🇹🇹".glyphCount, 1)
XCTAssertEqual("🇹🇹 ".glyphCount, 2)
XCTAssertEqual("👌🏽👌🏾👌🏿".glyphCount, 3)
XCTAssertEqual("😍".glyphCount, 1)
XCTAssertEqual("👩🏽".glyphCount, 1)
XCTAssertEqual("👾🙇💁🙅🙆🙋🙎🙍".glyphCount, 8)
XCTAssertEqual("🐵🙈🙉🙊".glyphCount, 4)
XCTAssertEqual("❤️💔💌💕💞💓💗💖💘💝💟💜💛💚💙".glyphCount, 15)
XCTAssertEqual("✋🏿💪🏿👐🏿🙌🏿👏🏿🙏🏿".glyphCount, 6)
XCTAssertEqual("🚾🆒🆓🆕🆖🆗🆙🏧".glyphCount, 8)
XCTAssertEqual("0️⃣1️⃣2️⃣3️⃣4️⃣5️⃣6️⃣7️⃣8️⃣9️⃣🔟".glyphCount, 11)
XCTAssertEqual("🇺🇸🇷🇺🇦🇫🇦🇲".glyphCount, 4)
XCTAssertEqual("🇺🇸🇷🇺🇸 🇦🇫🇦🇲🇸".glyphCount, 7)
XCTAssertEqual("🇺🇸🇷🇺🇸🇦🇫🇦🇲".glyphCount, 5)
XCTAssertEqual("🇺🇸🇷🇺🇸🇦".glyphCount, 3)
XCTAssertEqual("１２３".glyphCount, 3)
// Normal diacritic usage
XCTAssertEqual("Příliš žluťoučký kůň úpěl ďábelské ódy.".glyphCount, 39)
// Excessive diacritics
XCTAssertEqual("H҉̸̧͘͠A͢͞V̛̛I̴̸N͏̕͏G҉̵͜͏͢ ̧̧́T̶̛͘͡R̸̵̨̢̀O̷̡U͡҉B̶̛͢͞L̸̸͘͢͟É̸ ̸̛͘͏R͟È͠͞A̸͝Ḑ̕͘͜I̵͘҉͜͞N̷̡̢͠G̴͘͠ ͟͞T͏̢́͡È̀X̕҉̢̀T̢͠?̕͏̢͘͢".glyphCount, 115)
XCTAssertEqual("L̷̳͔̲͝Ģ̵̮̯̤̩̙͍̬̟͉̹̘̹͍͈̮̦̰̣͟͝O̶̴̮̻̮̗͘͡!̴̷̟͓͓".glyphCount, 43)
}
func testContainsOnlyEmoji() {
// Plain text
XCTAssertFalse("boring text".containsOnlyEmoji)
// Emojis
XCTAssertTrue("🇹🇹🌼🇹🇹🌼🇹🇹".containsOnlyEmoji)
XCTAssertTrue("🇹🇹".containsOnlyEmoji)
XCTAssertFalse("🇹🇹 ".containsOnlyEmoji)
XCTAssertTrue("👌🏽👌🏾👌🏿".containsOnlyEmoji)
XCTAssertTrue("😍".containsOnlyEmoji)
XCTAssertTrue("👩🏽".containsOnlyEmoji)
XCTAssertTrue("👾🙇💁🙅🙆🙋🙎🙍".containsOnlyEmoji)
XCTAssertTrue("🐵🙈🙉🙊".containsOnlyEmoji)
XCTAssertTrue("❤️💔💌💕💞💓💗💖💘💝💟💜💛💚💙".containsOnlyEmoji)
XCTAssertTrue("✋🏿💪🏿👐🏿🙌🏿👏🏿🙏🏿".containsOnlyEmoji)
XCTAssertTrue("🚾🆒🆓🆕🆖🆗🆙🏧".containsOnlyEmoji)
XCTAssertTrue("0️⃣1️⃣2️⃣3️⃣4️⃣5️⃣6️⃣7️⃣8️⃣9️⃣🔟".containsOnlyEmoji)
XCTAssertTrue("🇺🇸🇷🇺🇦🇫🇦🇲".containsOnlyEmoji)
XCTAssertFalse("🇺🇸🇷🇺🇸 🇦🇫🇦🇲🇸".containsOnlyEmoji)
XCTAssertTrue("🇺🇸🇷🇺🇸🇦🇫🇦🇲".containsOnlyEmoji)
XCTAssertTrue("🇺🇸🇷🇺🇸🇦".containsOnlyEmoji)
// Unicode standard doesn't consider these to be Emoji.
XCTAssertFalse("１２３".containsOnlyEmoji)
// Normal diacritic usage
XCTAssertFalse("Příliš žluťoučký kůň úpěl ďábelské ódy.".containsOnlyEmoji)
XCTAssertEqual("LGO!", filter.displayableText("L̷̳͔̲͝Ģ̵̮̯̤̩̙͍̬̟͉̹̘̹͍͈̮̦̰̣͟͝O̶̴̮̻̮̗͘͡!̴̷̟͓͓"))
// Excessive diacritics
XCTAssertFalse("H҉̸̧͘͠A͢͞V̛̛I̴̸N͏̕͏G҉̵͜͏͢ ̧̧́T̶̛͘͡R̸̵̨̢̀O̷̡U͡҉B̶̛͢͞L̸̸͘͢͟É̸ ̸̛͘͏R͟È͠͞A̸͝Ḑ̕͘͜I̵͘҉͜͞N̷̡̢͠G̴͘͠ ͟͞T͏̢́͡È̀X̕҉̢̀T̢͠?̕͏̢͘͢".containsOnlyEmoji)
XCTAssertFalse("L̷̳͔̲͝Ģ̵̮̯̤̩̙͍̬̟͉̹̘̹͍͈̮̦̰̣͟͝O̶̴̮̻̮̗͘͡!̴̷̟͓͓".containsOnlyEmoji)
}
}

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