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Skip VS15 (Emoji textual presentation). (#8553)

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Mastodon converts all Emoji to images, whether they have a VS15 after
them or not, but leaves the VS15 in the string, which is displayed as
a black box in Safari.
This commit is contained in:
M Somerville 2018-09-01 18:42:02 +01:00 committed by Eugen Rochko
parent 5c609c7419
commit a060beee72
2 changed files with 9 additions and 0 deletions
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5
app/javascript/mastodon/features/emoji/__tests__/emoji-test.js
View file

@ -73,5 +73,10 @@ describe('emoji', () => {
expect(emojify('<span class="invisible">😄<br/>😴</span>😇'))
.toEqual('<span class="invisible">😄<br/>😴</span><img draggable="false" class="emojione" alt="😇" title=":innocent:" src="/emoji/1f607.svg" />');
});
it('skips the textual presentation VS15 character', () => {
expect(emojify('✴︎')) // This is U+2734 EIGHT POINTED BLACK STAR then U+FE0E VARIATION SELECTOR-15
.toEqual('<img draggable="false" class="emojione" alt="✴" title=":eight_pointed_black_star:" src="/emoji/2734.svg" />');
});
});
});

4
app/javascript/mastodon/features/emoji/emoji.js
View file

@ -62,6 +62,10 @@ const emojify = (str, customEmojis = {}) => {
const title = shortCode ? `:${shortCode}:` : '';
replacement = `<img draggable="false" class="emojione" alt="${match}" title="${title}" src="${assetHost}/emoji/${filename}.svg" />`;
rend = i + match.length;
// If the matched character was followed by VS15 (for selecting text presentation), skip it.
if (str.codePointAt(rend) === 65038) {
rend += 1;
}
}
rtn += str.slice(0, i) + replacement;
str = str.slice(rend);