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Commit 3675d3cd authored by Seigo Nonaka's avatar Seigo Nonaka
Browse files

Delete emojis before and after ZWJ at the same time. 

Vendor may want to introduce their own ZWJ emoji sequence. To delete
them by one back space as the same behavior of Unicode emoji sequence,
use all emoji as the zwj emoji.

Bug: 28248662
Change-Id: I572dad42ee108476962d4b3fe9f3a6019cb50098
parent c81b726e

core/java/android/text/Emoji.java

+119 −3
Original line number Diff line number Diff line
@@ -23,6 +23,122 @@ import java.util.Arrays; 
 * @hide

 */

public class Emoji {

    // See http://www.unicode.org/Public/emoji/3.0/emoji-data.txt

    // TODO: Generate from external/unicode/emoji-data.txt

    private static int[] EMOJI_LIST = {

        0x0023, 0x002A, 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037, 0x0038,

        0x0039, 0x00A9, 0x00AE, 0x203C, 0x2049, 0x2122, 0x2139, 0x2194, 0x2195, 0x2196, 0x2197,

        0x2198, 0x2199, 0x21A9, 0x21AA, 0x231A, 0x231B, 0x2328, 0x23CF, 0x23E9, 0x23EA, 0x23EB,

        0x23EC, 0x23ED, 0x23EE, 0x23EF, 0x23F0, 0x23F1, 0x23F2, 0x23F3, 0x23F8, 0x23F9, 0x23FA,

        0x24C2, 0x25AA, 0x25AB, 0x25B6, 0x25C0, 0x25FB, 0x25FC, 0x25FD, 0x25FE, 0x2600, 0x2601,

        0x2602, 0x2603, 0x2604, 0x260E, 0x2611, 0x2614, 0x2615, 0x2618, 0x261D, 0x2620, 0x2622,

        0x2623, 0x2626, 0x262A, 0x262E, 0x262F, 0x2638, 0x2639, 0x263A, 0x2648, 0x2649, 0x264A,

        0x264B, 0x264C, 0x264D, 0x264E, 0x264F, 0x2650, 0x2651, 0x2652, 0x2653, 0x2660, 0x2663,

        0x2665, 0x2666, 0x2668, 0x267B, 0x267F, 0x2692, 0x2693, 0x2694, 0x2696, 0x2697, 0x2699,

        0x269B, 0x269C, 0x26A0, 0x26A1, 0x26AA, 0x26AB, 0x26B0, 0x26B1, 0x26BD, 0x26BE, 0x26C4,

        0x26C5, 0x26C8, 0x26CE, 0x26CF, 0x26D1, 0x26D3, 0x26D4, 0x26E9, 0x26EA, 0x26F0, 0x26F1,

        0x26F2, 0x26F3, 0x26F4, 0x26F5, 0x26F7, 0x26F8, 0x26F9, 0x26FA, 0x26FD, 0x2702, 0x2705,

        0x2708, 0x2709, 0x270A, 0x270B, 0x270C, 0x270D, 0x270F, 0x2712, 0x2714, 0x2716, 0x271D,

        0x2721, 0x2728, 0x2733, 0x2734, 0x2744, 0x2747, 0x274C, 0x274E, 0x2753, 0x2754, 0x2755,

        0x2757, 0x2763, 0x2764, 0x2795, 0x2796, 0x2797, 0x27A1, 0x27B0, 0x27BF, 0x2934, 0x2935,

        0x2B05, 0x2B06, 0x2B07, 0x2B1B, 0x2B1C, 0x2B50, 0x2B55, 0x3030, 0x303D, 0x3297, 0x3299,

        0x1F004, 0x1F0CF, 0x1F170, 0x1F171, 0x1F17E, 0x1F17F, 0x1F18E, 0x1F191, 0x1F192, 0x1F193,

        0x1F194, 0x1F195, 0x1F196, 0x1F197, 0x1F198, 0x1F199, 0x1F19A, 0x1F1E6, 0x1F1E7, 0x1F1E8,

        0x1F1E9, 0x1F1EA, 0x1F1EB, 0x1F1EC, 0x1F1ED, 0x1F1EE, 0x1F1EF, 0x1F1F0, 0x1F1F1, 0x1F1F2,

        0x1F1F3, 0x1F1F4, 0x1F1F5, 0x1F1F6, 0x1F1F7, 0x1F1F8, 0x1F1F9, 0x1F1FA, 0x1F1FB, 0x1F1FC,

        0x1F1FD, 0x1F1FE, 0x1F1FF, 0x1F201, 0x1F202, 0x1F21A, 0x1F22F, 0x1F232, 0x1F233, 0x1F234,

        0x1F235, 0x1F236, 0x1F237, 0x1F238, 0x1F239, 0x1F23A, 0x1F250, 0x1F251, 0x1F300, 0x1F301,

        0x1F302, 0x1F303, 0x1F304, 0x1F305, 0x1F306, 0x1F307, 0x1F308, 0x1F309, 0x1F30A, 0x1F30B,

        0x1F30C, 0x1F30D, 0x1F30E, 0x1F30F, 0x1F310, 0x1F311, 0x1F312, 0x1F313, 0x1F314, 0x1F315,

        0x1F316, 0x1F317, 0x1F318, 0x1F319, 0x1F31A, 0x1F31B, 0x1F31C, 0x1F31D, 0x1F31E, 0x1F31F,

        0x1F320, 0x1F321, 0x1F324, 0x1F325, 0x1F326, 0x1F327, 0x1F328, 0x1F329, 0x1F32A, 0x1F32B,

        0x1F32C, 0x1F32D, 0x1F32E, 0x1F32F, 0x1F330, 0x1F331, 0x1F332, 0x1F333, 0x1F334, 0x1F335,

        0x1F336, 0x1F337, 0x1F338, 0x1F339, 0x1F33A, 0x1F33B, 0x1F33C, 0x1F33D, 0x1F33E, 0x1F33F,

        0x1F340, 0x1F341, 0x1F342, 0x1F343, 0x1F344, 0x1F345, 0x1F346, 0x1F347, 0x1F348, 0x1F349,

        0x1F34A, 0x1F34B, 0x1F34C, 0x1F34D, 0x1F34E, 0x1F34F, 0x1F350, 0x1F351, 0x1F352, 0x1F353,

        0x1F354, 0x1F355, 0x1F356, 0x1F357, 0x1F358, 0x1F359, 0x1F35A, 0x1F35B, 0x1F35C, 0x1F35D,

        0x1F35E, 0x1F35F, 0x1F360, 0x1F361, 0x1F362, 0x1F363, 0x1F364, 0x1F365, 0x1F366, 0x1F367,

        0x1F368, 0x1F369, 0x1F36A, 0x1F36B, 0x1F36C, 0x1F36D, 0x1F36E, 0x1F36F, 0x1F370, 0x1F371,

        0x1F372, 0x1F373, 0x1F374, 0x1F375, 0x1F376, 0x1F377, 0x1F378, 0x1F379, 0x1F37A, 0x1F37B,

        0x1F37C, 0x1F37D, 0x1F37E, 0x1F37F, 0x1F380, 0x1F381, 0x1F382, 0x1F383, 0x1F384, 0x1F385,

        0x1F386, 0x1F387, 0x1F388, 0x1F389, 0x1F38A, 0x1F38B, 0x1F38C, 0x1F38D, 0x1F38E, 0x1F38F,

        0x1F390, 0x1F391, 0x1F392, 0x1F393, 0x1F396, 0x1F397, 0x1F399, 0x1F39A, 0x1F39B, 0x1F39E,

        0x1F39F, 0x1F3A0, 0x1F3A1, 0x1F3A2, 0x1F3A3, 0x1F3A4, 0x1F3A5, 0x1F3A6, 0x1F3A7, 0x1F3A8,

        0x1F3A9, 0x1F3AA, 0x1F3AB, 0x1F3AC, 0x1F3AD, 0x1F3AE, 0x1F3AF, 0x1F3B0, 0x1F3B1, 0x1F3B2,

        0x1F3B3, 0x1F3B4, 0x1F3B5, 0x1F3B6, 0x1F3B7, 0x1F3B8, 0x1F3B9, 0x1F3BA, 0x1F3BB, 0x1F3BC,

        0x1F3BD, 0x1F3BE, 0x1F3BF, 0x1F3C0, 0x1F3C1, 0x1F3C2, 0x1F3C3, 0x1F3C4, 0x1F3C5, 0x1F3C6,

        0x1F3C7, 0x1F3C8, 0x1F3C9, 0x1F3CA, 0x1F3CB, 0x1F3CC, 0x1F3CD, 0x1F3CE, 0x1F3CF, 0x1F3D0,

        0x1F3D1, 0x1F3D2, 0x1F3D3, 0x1F3D4, 0x1F3D5, 0x1F3D6, 0x1F3D7, 0x1F3D8, 0x1F3D9, 0x1F3DA,

        0x1F3DB, 0x1F3DC, 0x1F3DD, 0x1F3DE, 0x1F3DF, 0x1F3E0, 0x1F3E1, 0x1F3E2, 0x1F3E3, 0x1F3E4,

        0x1F3E5, 0x1F3E6, 0x1F3E7, 0x1F3E8, 0x1F3E9, 0x1F3EA, 0x1F3EB, 0x1F3EC, 0x1F3ED, 0x1F3EE,

        0x1F3EF, 0x1F3F0, 0x1F3F3, 0x1F3F4, 0x1F3F5, 0x1F3F7, 0x1F3F8, 0x1F3F9, 0x1F3FA, 0x1F3FB,

        0x1F3FC, 0x1F3FD, 0x1F3FE, 0x1F3FF, 0x1F400, 0x1F401, 0x1F402, 0x1F403, 0x1F404, 0x1F405,

        0x1F406, 0x1F407, 0x1F408, 0x1F409, 0x1F40A, 0x1F40B, 0x1F40C, 0x1F40D, 0x1F40E, 0x1F40F,

        0x1F410, 0x1F411, 0x1F412, 0x1F413, 0x1F414, 0x1F415, 0x1F416, 0x1F417, 0x1F418, 0x1F419,

        0x1F41A, 0x1F41B, 0x1F41C, 0x1F41D, 0x1F41E, 0x1F41F, 0x1F420, 0x1F421, 0x1F422, 0x1F423,

        0x1F424, 0x1F425, 0x1F426, 0x1F427, 0x1F428, 0x1F429, 0x1F42A, 0x1F42B, 0x1F42C, 0x1F42D,

        0x1F42E, 0x1F42F, 0x1F430, 0x1F431, 0x1F432, 0x1F433, 0x1F434, 0x1F435, 0x1F436, 0x1F437,

        0x1F438, 0x1F439, 0x1F43A, 0x1F43B, 0x1F43C, 0x1F43D, 0x1F43E, 0x1F43F, 0x1F440, 0x1F441,

        0x1F442, 0x1F443, 0x1F444, 0x1F445, 0x1F446, 0x1F447, 0x1F448, 0x1F449, 0x1F44A, 0x1F44B,

        0x1F44C, 0x1F44D, 0x1F44E, 0x1F44F, 0x1F450, 0x1F451, 0x1F452, 0x1F453, 0x1F454, 0x1F455,

        0x1F456, 0x1F457, 0x1F458, 0x1F459, 0x1F45A, 0x1F45B, 0x1F45C, 0x1F45D, 0x1F45E, 0x1F45F,

        0x1F460, 0x1F461, 0x1F462, 0x1F463, 0x1F464, 0x1F465, 0x1F466, 0x1F467, 0x1F468, 0x1F469,

        0x1F46A, 0x1F46B, 0x1F46C, 0x1F46D, 0x1F46E, 0x1F46F, 0x1F470, 0x1F471, 0x1F472, 0x1F473,

        0x1F474, 0x1F475, 0x1F476, 0x1F477, 0x1F478, 0x1F479, 0x1F47A, 0x1F47B, 0x1F47C, 0x1F47D,

        0x1F47E, 0x1F47F, 0x1F480, 0x1F481, 0x1F482, 0x1F483, 0x1F484, 0x1F485, 0x1F486, 0x1F487,

        0x1F488, 0x1F489, 0x1F48A, 0x1F48B, 0x1F48C, 0x1F48D, 0x1F48E, 0x1F48F, 0x1F490, 0x1F491,

        0x1F492, 0x1F493, 0x1F494, 0x1F495, 0x1F496, 0x1F497, 0x1F498, 0x1F499, 0x1F49A, 0x1F49B,

        0x1F49C, 0x1F49D, 0x1F49E, 0x1F49F, 0x1F4A0, 0x1F4A1, 0x1F4A2, 0x1F4A3, 0x1F4A4, 0x1F4A5,

        0x1F4A6, 0x1F4A7, 0x1F4A8, 0x1F4A9, 0x1F4AA, 0x1F4AB, 0x1F4AC, 0x1F4AD, 0x1F4AE, 0x1F4AF,

        0x1F4B0, 0x1F4B1, 0x1F4B2, 0x1F4B3, 0x1F4B4, 0x1F4B5, 0x1F4B6, 0x1F4B7, 0x1F4B8, 0x1F4B9,

        0x1F4BA, 0x1F4BB, 0x1F4BC, 0x1F4BD, 0x1F4BE, 0x1F4BF, 0x1F4C0, 0x1F4C1, 0x1F4C2, 0x1F4C3,

        0x1F4C4, 0x1F4C5, 0x1F4C6, 0x1F4C7, 0x1F4C8, 0x1F4C9, 0x1F4CA, 0x1F4CB, 0x1F4CC, 0x1F4CD,

        0x1F4CE, 0x1F4CF, 0x1F4D0, 0x1F4D1, 0x1F4D2, 0x1F4D3, 0x1F4D4, 0x1F4D5, 0x1F4D6, 0x1F4D7,

        0x1F4D8, 0x1F4D9, 0x1F4DA, 0x1F4DB, 0x1F4DC, 0x1F4DD, 0x1F4DE, 0x1F4DF, 0x1F4E0, 0x1F4E1,

        0x1F4E2, 0x1F4E3, 0x1F4E4, 0x1F4E5, 0x1F4E6, 0x1F4E7, 0x1F4E8, 0x1F4E9, 0x1F4EA, 0x1F4EB,

        0x1F4EC, 0x1F4ED, 0x1F4EE, 0x1F4EF, 0x1F4F0, 0x1F4F1, 0x1F4F2, 0x1F4F3, 0x1F4F4, 0x1F4F5,

        0x1F4F6, 0x1F4F7, 0x1F4F8, 0x1F4F9, 0x1F4FA, 0x1F4FB, 0x1F4FC, 0x1F4FD, 0x1F4FF, 0x1F500,

        0x1F501, 0x1F502, 0x1F503, 0x1F504, 0x1F505, 0x1F506, 0x1F507, 0x1F508, 0x1F509, 0x1F50A,

        0x1F50B, 0x1F50C, 0x1F50D, 0x1F50E, 0x1F50F, 0x1F510, 0x1F511, 0x1F512, 0x1F513, 0x1F514,

        0x1F515, 0x1F516, 0x1F517, 0x1F518, 0x1F519, 0x1F51A, 0x1F51B, 0x1F51C, 0x1F51D, 0x1F51E,

        0x1F51F, 0x1F520, 0x1F521, 0x1F522, 0x1F523, 0x1F524, 0x1F525, 0x1F526, 0x1F527, 0x1F528,

        0x1F529, 0x1F52A, 0x1F52B, 0x1F52C, 0x1F52D, 0x1F52E, 0x1F52F, 0x1F530, 0x1F531, 0x1F532,

        0x1F533, 0x1F534, 0x1F535, 0x1F536, 0x1F537, 0x1F538, 0x1F539, 0x1F53A, 0x1F53B, 0x1F53C,

        0x1F53D, 0x1F549, 0x1F54A, 0x1F54B, 0x1F54C, 0x1F54D, 0x1F54E, 0x1F550, 0x1F551, 0x1F552,

        0x1F553, 0x1F554, 0x1F555, 0x1F556, 0x1F557, 0x1F558, 0x1F559, 0x1F55A, 0x1F55B, 0x1F55C,

        0x1F55D, 0x1F55E, 0x1F55F, 0x1F560, 0x1F561, 0x1F562, 0x1F563, 0x1F564, 0x1F565, 0x1F566,

        0x1F567, 0x1F56F, 0x1F570, 0x1F573, 0x1F574, 0x1F575, 0x1F576, 0x1F577, 0x1F578, 0x1F579,

        0x1F57A, 0x1F587, 0x1F58A, 0x1F58B, 0x1F58C, 0x1F58D, 0x1F590, 0x1F595, 0x1F596, 0x1F5A4,

        0x1F5A5, 0x1F5A8, 0x1F5B1, 0x1F5B2, 0x1F5BC, 0x1F5C2, 0x1F5C3, 0x1F5C4, 0x1F5D1, 0x1F5D2,

        0x1F5D3, 0x1F5DC, 0x1F5DD, 0x1F5DE, 0x1F5E1, 0x1F5E3, 0x1F5E8, 0x1F5EF, 0x1F5F3, 0x1F5FA,

        0x1F5FB, 0x1F5FC, 0x1F5FD, 0x1F5FE, 0x1F5FF, 0x1F600, 0x1F601, 0x1F602, 0x1F603, 0x1F604,

        0x1F605, 0x1F606, 0x1F607, 0x1F608, 0x1F609, 0x1F60A, 0x1F60B, 0x1F60C, 0x1F60D, 0x1F60E,

        0x1F60F, 0x1F610, 0x1F611, 0x1F612, 0x1F613, 0x1F614, 0x1F615, 0x1F616, 0x1F617, 0x1F618,

        0x1F619, 0x1F61A, 0x1F61B, 0x1F61C, 0x1F61D, 0x1F61E, 0x1F61F, 0x1F620, 0x1F621, 0x1F622,

        0x1F623, 0x1F624, 0x1F625, 0x1F626, 0x1F627, 0x1F628, 0x1F629, 0x1F62A, 0x1F62B, 0x1F62C,

        0x1F62D, 0x1F62E, 0x1F62F, 0x1F630, 0x1F631, 0x1F632, 0x1F633, 0x1F634, 0x1F635, 0x1F636,

        0x1F637, 0x1F638, 0x1F639, 0x1F63A, 0x1F63B, 0x1F63C, 0x1F63D, 0x1F63E, 0x1F63F, 0x1F640,

        0x1F641, 0x1F642, 0x1F643, 0x1F644, 0x1F645, 0x1F646, 0x1F647, 0x1F648, 0x1F649, 0x1F64A,

        0x1F64B, 0x1F64C, 0x1F64D, 0x1F64E, 0x1F64F, 0x1F680, 0x1F681, 0x1F682, 0x1F683, 0x1F684,

        0x1F685, 0x1F686, 0x1F687, 0x1F688, 0x1F689, 0x1F68A, 0x1F68B, 0x1F68C, 0x1F68D, 0x1F68E,

        0x1F68F, 0x1F690, 0x1F691, 0x1F692, 0x1F693, 0x1F694, 0x1F695, 0x1F696, 0x1F697, 0x1F698,

        0x1F699, 0x1F69A, 0x1F69B, 0x1F69C, 0x1F69D, 0x1F69E, 0x1F69F, 0x1F6A0, 0x1F6A1, 0x1F6A2,

        0x1F6A3, 0x1F6A4, 0x1F6A5, 0x1F6A6, 0x1F6A7, 0x1F6A8, 0x1F6A9, 0x1F6AA, 0x1F6AB, 0x1F6AC,

        0x1F6AD, 0x1F6AE, 0x1F6AF, 0x1F6B0, 0x1F6B1, 0x1F6B2, 0x1F6B3, 0x1F6B4, 0x1F6B5, 0x1F6B6,

        0x1F6B7, 0x1F6B8, 0x1F6B9, 0x1F6BA, 0x1F6BB, 0x1F6BC, 0x1F6BD, 0x1F6BE, 0x1F6BF, 0x1F6C0,

        0x1F6C1, 0x1F6C2, 0x1F6C3, 0x1F6C4, 0x1F6C5, 0x1F6CB, 0x1F6CC, 0x1F6CD, 0x1F6CE, 0x1F6CF,

        0x1F6D0, 0x1F6D1, 0x1F6D2, 0x1F6E0, 0x1F6E1, 0x1F6E2, 0x1F6E3, 0x1F6E4, 0x1F6E5, 0x1F6E9,

        0x1F6EB, 0x1F6EC, 0x1F6F0, 0x1F6F3, 0x1F6F4, 0x1F6F5, 0x1F6F6, 0x1F910, 0x1F911, 0x1F912,

        0x1F913, 0x1F914, 0x1F915, 0x1F916, 0x1F917, 0x1F918, 0x1F919, 0x1F91A, 0x1F91B, 0x1F91C,

        0x1F91D, 0x1F91E, 0x1F920, 0x1F921, 0x1F922, 0x1F923, 0x1F924, 0x1F925, 0x1F926, 0x1F927,

        0x1F930, 0x1F933, 0x1F934, 0x1F935, 0x1F936, 0x1F937, 0x1F938, 0x1F939, 0x1F93A, 0x1F93B,

        0x1F93C, 0x1F93D, 0x1F93E, 0x1F940, 0x1F941, 0x1F942, 0x1F943, 0x1F944, 0x1F945, 0x1F946,

        0x1F947, 0x1F948, 0x1F949, 0x1F94A, 0x1F94B, 0x1F950, 0x1F951, 0x1F952, 0x1F953, 0x1F954,

        0x1F955, 0x1F956, 0x1F957, 0x1F958, 0x1F959, 0x1F95A, 0x1F95B, 0x1F95C, 0x1F95D, 0x1F95E,

        0x1F980, 0x1F981, 0x1F982, 0x1F983, 0x1F984, 0x1F985, 0x1F986, 0x1F987, 0x1F988, 0x1F989,

        0x1F98A, 0x1F98B, 0x1F98C, 0x1F98D, 0x1F98E, 0x1F98F, 0x1F990, 0x1F991, 0x1F9C0

    };



    // See http://www.unicode.org/Public/emoji/3.0/emoji-data.txt

    private static int[] EMOJI_MODIFIER_BASE = {

        0x261D, 0x26F9, 0x270A, 0x270B, 0x270C, 0x270D, 0x1F385, 0x1F3C3, 0x1F3C4, 0x1F3CA,
@@ -62,9 +178,9 @@ public class Emoji { 
        return Arrays.binarySearch(EMOJI_MODIFIER_BASE, codePoint) >= 0;

    }



    // Returns true if the character appears before or after zwj in a zwj emoji sequence.

    public static boolean isZwjEmoji(int codePoint) {

        return Arrays.binarySearch(ZWJ_EMOJI, codePoint) >= 0;

    // Returns true if the character has Emoji property.

    public static boolean isEmoji(int codePoint) {

        return Arrays.binarySearch(EMOJI_LIST, codePoint) >= 0;

    }



    // Returns true if the character can be a base character of COMBINING ENCLOSING KEYCAP.

core/java/android/text/method/BaseKeyListener.java

+5 −5
Original line number Diff line number Diff line
@@ -162,14 +162,14 @@ public abstract class BaseKeyListener extends MetaKeyKeyListener 
                        state = STATE_LF;

                    } else if (isVariationSelector(codePoint)) {

                        state = STATE_BEFORE_VS;

                    } else if (Emoji.isZwjEmoji(codePoint)) {

                        state = STATE_BEFORE_ZWJ_EMOJI;

                    } else if (Emoji.isRegionalIndicatorSymbol(codePoint)) {

                        state = STATE_ODD_NUMBERED_RIS;

                    } else if (Emoji.isEmojiModifier(codePoint)) {

                        state = STATE_BEFORE_EMOJI_MODIFIER;

                    } else if (codePoint == Emoji.COMBINING_ENCLOSING_KEYCAP) {

                        state = STATE_BEFORE_KEYCAP;

                    } else if (Emoji.isEmoji(codePoint)) {

                        state = STATE_BEFORE_ZWJ_EMOJI;

                    } else {

                        state = STATE_FINISHED;

                    }
@@ -230,7 +230,7 @@ public abstract class BaseKeyListener extends MetaKeyKeyListener 
                    state = STATE_FINISHED;

                    break;

                case STATE_BEFORE_VS:

                    if (Emoji.isZwjEmoji(codePoint)) {

                    if (Emoji.isEmoji(codePoint)) {

                        deleteCharCount += Character.charCount(codePoint);

                        state = STATE_BEFORE_ZWJ_EMOJI;

                        break;
@@ -250,7 +250,7 @@ public abstract class BaseKeyListener extends MetaKeyKeyListener 
                    }

                    break;

                case STATE_BEFORE_ZWJ:

                    if (Emoji.isZwjEmoji(codePoint)) {

                    if (Emoji.isEmoji(codePoint)) {

                        deleteCharCount += Character.charCount(codePoint) + 1;  // +1 for ZWJ.

                        state = STATE_BEFORE_ZWJ_EMOJI;

                    } else if (isVariationSelector(codePoint)) {
@@ -261,7 +261,7 @@ public abstract class BaseKeyListener extends MetaKeyKeyListener 
                    }

                    break;

                case STATE_BEFORE_VS_AND_ZWJ:

                    if (Emoji.isZwjEmoji(codePoint)) {

                    if (Emoji.isEmoji(codePoint)) {

                        // +1 for ZWJ.

                        deleteCharCount += lastSeenVSCharCount + 1 + Character.charCount(codePoint);

                        lastSeenVSCharCount = 0;

core/tests/coretests/src/android/text/method/BackspaceTest.java

+1 −7
Original line number Diff line number Diff line
@@ -420,10 +420,6 @@ public class BackspaceTest extends KeyListenerTestCase { 
        // Regional indicator symbol + ZERO WIDTH JOINER

        state.setByString("U+1F1FA U+200D U+1F469 |");

        backspace(state, 0);

        state.assertEquals("U+1F1FA U+200D |");

        backspace(state, 0);

        state.assertEquals("U+1F1FA |");

        backspace(state, 0);

        state.assertEquals("|");



        // Start with ZERO WIDTH JOINER + emoji modifier
@@ -452,9 +448,7 @@ public class BackspaceTest extends KeyListenerTestCase { 
        // Emoji modifier + ZERO WIDTH JOINER

        state.setByString("U+1F466 U+1F3FB U+200D U+1F469 |");

        backspace(state, 0);

        state.assertEquals("U+1F466 U+1F3FB U+200D |");

        backspace(state, 0);

        state.assertEquals("U+1F466 U+1F3FB |");

        state.assertEquals("U+1F466 |");

        backspace(state, 0);

        state.assertEquals("|");