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Fix emoji rewrite adding unnecessary curft to the DOM for most emoji (m…
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…astodon#33818)
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@ClearlyClaire
ClearlyClaire authored Feb 3, 2025
1 parent b1c9cff commit 44f5f1f
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36 changes: 18 additions & 18 deletions app/javascript/mastodon/features/emoji/__tests__/emoji-test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -22,40 +22,40 @@ describe('emoji', () => {

it('does unicode', () => {
expect(emojify('\uD83D\uDC69\u200D\uD83D\uDC69\u200D\uD83D\uDC66\u200D\uD83D\uDC66')).toEqual(
'<picture><img draggable="false" class="emojione" alt="👩‍👩‍👦‍👦" title=":woman-woman-boy-boy:" src="/emoji/1f469-200d-1f469-200d-1f466-200d-1f466.svg"></picture>');
'<img draggable="false" class="emojione" alt="👩‍👩‍👦‍👦" title=":woman-woman-boy-boy:" src="/emoji/1f469-200d-1f469-200d-1f466-200d-1f466.svg">');
expect(emojify('👨‍👩‍👧‍👧')).toEqual(
'<picture><img draggable="false" class="emojione" alt="👨‍👩‍👧‍👧" title=":man-woman-girl-girl:" src="/emoji/1f468-200d-1f469-200d-1f467-200d-1f467.svg"></picture>');
expect(emojify('👩‍👩‍👦')).toEqual('<picture><img draggable="false" class="emojione" alt="👩‍👩‍👦" title=":woman-woman-boy:" src="/emoji/1f469-200d-1f469-200d-1f466.svg"></picture>');
'<img draggable="false" class="emojione" alt="👨‍👩‍👧‍👧" title=":man-woman-girl-girl:" src="/emoji/1f468-200d-1f469-200d-1f467-200d-1f467.svg">');
expect(emojify('👩‍👩‍👦')).toEqual('<img draggable="false" class="emojione" alt="👩‍👩‍👦" title=":woman-woman-boy:" src="/emoji/1f469-200d-1f469-200d-1f466.svg">');
expect(emojify('\u2757')).toEqual(
'<picture><img draggable="false" class="emojione" alt="❗" title=":exclamation:" src="/emoji/2757.svg"></picture>');
'<img draggable="false" class="emojione" alt="❗" title=":exclamation:" src="/emoji/2757.svg">');
});

it('does multiple unicode', () => {
expect(emojify('\u2757 #\uFE0F\u20E3')).toEqual(
'<picture><img draggable="false" class="emojione" alt="❗" title=":exclamation:" src="/emoji/2757.svg"></picture> <picture><img draggable="false" class="emojione" alt="#️⃣" title=":hash:" src="/emoji/23-20e3.svg"></picture>');
'<img draggable="false" class="emojione" alt="❗" title=":exclamation:" src="/emoji/2757.svg"> <img draggable="false" class="emojione" alt="#️⃣" title=":hash:" src="/emoji/23-20e3.svg">');
expect(emojify('\u2757#\uFE0F\u20E3')).toEqual(
'<picture><img draggable="false" class="emojione" alt="❗" title=":exclamation:" src="/emoji/2757.svg"></picture><picture><img draggable="false" class="emojione" alt="#️⃣" title=":hash:" src="/emoji/23-20e3.svg"></picture>');
'<img draggable="false" class="emojione" alt="❗" title=":exclamation:" src="/emoji/2757.svg"><img draggable="false" class="emojione" alt="#️⃣" title=":hash:" src="/emoji/23-20e3.svg">');
expect(emojify('\u2757 #\uFE0F\u20E3 \u2757')).toEqual(
'<picture><img draggable="false" class="emojione" alt="❗" title=":exclamation:" src="/emoji/2757.svg"></picture> <picture><img draggable="false" class="emojione" alt="#️⃣" title=":hash:" src="/emoji/23-20e3.svg"></picture> <picture><img draggable="false" class="emojione" alt="❗" title=":exclamation:" src="/emoji/2757.svg"></picture>');
'<img draggable="false" class="emojione" alt="❗" title=":exclamation:" src="/emoji/2757.svg"> <img draggable="false" class="emojione" alt="#️⃣" title=":hash:" src="/emoji/23-20e3.svg"> <img draggable="false" class="emojione" alt="❗" title=":exclamation:" src="/emoji/2757.svg">');
expect(emojify('foo \u2757 #\uFE0F\u20E3 bar')).toEqual(
'foo <picture><img draggable="false" class="emojione" alt="❗" title=":exclamation:" src="/emoji/2757.svg"></picture> <picture><img draggable="false" class="emojione" alt="#️⃣" title=":hash:" src="/emoji/23-20e3.svg"></picture> bar');
'foo <img draggable="false" class="emojione" alt="❗" title=":exclamation:" src="/emoji/2757.svg"> <img draggable="false" class="emojione" alt="#️⃣" title=":hash:" src="/emoji/23-20e3.svg"> bar');
});

it('ignores unicode inside of tags', () => {
expect(emojify('<p data-foo="\uD83D\uDC69\uD83D\uDC69\uD83D\uDC66"></p>')).toEqual('<p data-foo="\uD83D\uDC69\uD83D\uDC69\uD83D\uDC66"></p>');
});

it('does multiple emoji properly (issue 5188)', () => {
expect(emojify('👌🌈💕')).toEqual('<picture><img draggable="false" class="emojione" alt="👌" title=":ok_hand:" src="/emoji/1f44c.svg"></picture><picture><img draggable="false" class="emojione" alt="🌈" title=":rainbow:" src="/emoji/1f308.svg"></picture><picture><img draggable="false" class="emojione" alt="💕" title=":two_hearts:" src="/emoji/1f495.svg"></picture>');
expect(emojify('👌 🌈 💕')).toEqual('<picture><img draggable="false" class="emojione" alt="👌" title=":ok_hand:" src="/emoji/1f44c.svg"></picture> <picture><img draggable="false" class="emojione" alt="🌈" title=":rainbow:" src="/emoji/1f308.svg"></picture> <picture><img draggable="false" class="emojione" alt="💕" title=":two_hearts:" src="/emoji/1f495.svg"></picture>');
expect(emojify('👌🌈💕')).toEqual('<img draggable="false" class="emojione" alt="👌" title=":ok_hand:" src="/emoji/1f44c.svg"><img draggable="false" class="emojione" alt="🌈" title=":rainbow:" src="/emoji/1f308.svg"><img draggable="false" class="emojione" alt="💕" title=":two_hearts:" src="/emoji/1f495.svg">');
expect(emojify('👌 🌈 💕')).toEqual('<img draggable="false" class="emojione" alt="👌" title=":ok_hand:" src="/emoji/1f44c.svg"> <img draggable="false" class="emojione" alt="🌈" title=":rainbow:" src="/emoji/1f308.svg"> <img draggable="false" class="emojione" alt="💕" title=":two_hearts:" src="/emoji/1f495.svg">');
});

it('does an emoji that has no shortcode', () => {
expect(emojify('👁‍🗨')).toEqual('<picture><img draggable="false" class="emojione" alt="👁‍🗨" title="" src="/emoji/1f441-200d-1f5e8.svg"></picture>');
expect(emojify('👁‍🗨')).toEqual('<img draggable="false" class="emojione" alt="👁‍🗨" title="" src="/emoji/1f441-200d-1f5e8.svg">');
});

it('does an emoji whose filename is irregular', () => {
expect(emojify('↙️')).toEqual('<picture><img draggable="false" class="emojione" alt="↙️" title=":arrow_lower_left:" src="/emoji/2199.svg"></picture>');
expect(emojify('↙️')).toEqual('<img draggable="false" class="emojione" alt="↙️" title=":arrow_lower_left:" src="/emoji/2199.svg">');
});

it('avoid emojifying on invisible text', () => {
Expand All @@ -67,11 +67,11 @@ describe('emoji', () => {

it('avoid emojifying on invisible text with nested tags', () => {
expect(emojify('<span class="invisible">😄<span class="foo">bar</span>😴</span>😇'))
.toEqual('<span class="invisible">😄<span class="foo">bar</span>😴</span><picture><img draggable="false" class="emojione" alt="😇" title=":innocent:" src="/emoji/1f607.svg"></picture>');
.toEqual('<span class="invisible">😄<span class="foo">bar</span>😴</span><img draggable="false" class="emojione" alt="😇" title=":innocent:" src="/emoji/1f607.svg">');
expect(emojify('<span class="invisible">😄<span class="invisible">😕</span>😴</span>😇'))
.toEqual('<span class="invisible">😄<span class="invisible">😕</span>😴</span><picture><img draggable="false" class="emojione" alt="😇" title=":innocent:" src="/emoji/1f607.svg"></picture>');
.toEqual('<span class="invisible">😄<span class="invisible">😕</span>😴</span><img draggable="false" class="emojione" alt="😇" title=":innocent:" src="/emoji/1f607.svg">');
expect(emojify('<span class="invisible">😄<br>😴</span>😇'))
.toEqual('<span class="invisible">😄<br>😴</span><picture><img draggable="false" class="emojione" alt="😇" title=":innocent:" src="/emoji/1f607.svg"></picture>');
.toEqual('<span class="invisible">😄<br>😴</span><img draggable="false" class="emojione" alt="😇" title=":innocent:" src="/emoji/1f607.svg">');
});

it('does not emojify emojis with textual presentation VS15 character', () => {
Expand All @@ -81,17 +81,17 @@ describe('emoji', () => {

it('does a simple emoji properly', () => {
expect(emojify('♀♂'))
.toEqual('<picture><img draggable="false" class="emojione" alt="♀" title=":female_sign:" src="/emoji/2640.svg"></picture><picture><img draggable="false" class="emojione" alt="♂" title=":male_sign:" src="/emoji/2642.svg"></picture>');
.toEqual('<img draggable="false" class="emojione" alt="♀" title=":female_sign:" src="/emoji/2640.svg"><img draggable="false" class="emojione" alt="♂" title=":male_sign:" src="/emoji/2642.svg">');
});

it('does an emoji containing ZWJ properly', () => {
expect(emojify('💂‍♀️💂‍♂️'))
.toEqual('<picture><img draggable="false" class="emojione" alt="💂\u200D♀️" title=":female-guard:" src="/emoji/1f482-200d-2640-fe0f_border.svg"></picture><picture><img draggable="false" class="emojione" alt="💂\u200D♂️" title=":male-guard:" src="/emoji/1f482-200d-2642-fe0f_border.svg"></picture>');
.toEqual('<img draggable="false" class="emojione" alt="💂\u200D♀️" title=":female-guard:" src="/emoji/1f482-200d-2640-fe0f_border.svg"><img draggable="false" class="emojione" alt="💂\u200D♂️" title=":male-guard:" src="/emoji/1f482-200d-2642-fe0f_border.svg">');
});

it('keeps ordering as expected (issue fixed by PR 20677)', () => {
expect(emojify('<p>💕 <a class="hashtag" href="https://example.com/tags/foo" rel="nofollow noopener" target="_blank">#<span>foo</span></a> test: foo.</p>'))
.toEqual('<p><picture><img draggable="false" class="emojione" alt="💕" title=":two_hearts:" src="/emoji/1f495.svg"></picture> <a class="hashtag" href="https://example.com/tags/foo" rel="nofollow noopener" target="_blank">#<span>foo</span></a> test: foo.</p>');
.toEqual('<p><img draggable="false" class="emojione" alt="💕" title=":two_hearts:" src="/emoji/1f495.svg"> <a class="hashtag" href="https://example.com/tags/foo" rel="nofollow noopener" target="_blank">#<span>foo</span></a> test: foo.</p>');
});
});
});
32 changes: 16 additions & 16 deletions app/javascript/mastodon/features/emoji/emoji.js
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Original file line number Diff line number Diff line change
Expand Up @@ -97,30 +97,30 @@ const emojifyTextNode = (node, customEmojis) => {
const { filename, shortCode } = unicodeMapping[unicode_emoji];
const title = shortCode ? `:${shortCode}:` : '';

replacement = document.createElement('picture');

const isSystemTheme = !!document.body?.classList.contains('theme-system');

if(isSystemTheme) {
let source = document.createElement('source');
source.setAttribute('media', '(prefers-color-scheme: dark)');
source.setAttribute('srcset', `${assetHost}/emoji/${emojiFilename(filename, "dark")}.svg`);
replacement.appendChild(source);
}
const theme = (isSystemTheme || document.body?.classList.contains('theme-mastodon-light')) ? 'light' : 'dark';

const imageFilename = emojiFilename(filename, theme);

let img = document.createElement('img');
const img = document.createElement('img');
img.setAttribute('draggable', 'false');
img.setAttribute('class', 'emojione');
img.setAttribute('alt', unicode_emoji);
img.setAttribute('title', title);
img.setAttribute('src', `${assetHost}/emoji/${imageFilename}.svg`);

let theme = "light";
if (isSystemTheme && imageFilename !== emojiFilename(filename, 'dark')) {
replacement = document.createElement('picture');

if(!isSystemTheme && !document.body?.classList.contains('theme-mastodon-light'))
theme = "dark";

img.setAttribute('src', `${assetHost}/emoji/${emojiFilename(filename, theme)}.svg`);
replacement.appendChild(img);
const source = document.createElement('source');
source.setAttribute('media', '(prefers-color-scheme: dark)');
source.setAttribute('srcset', `${assetHost}/emoji/${emojiFilename(filename, 'dark')}.svg`);
replacement.appendChild(source);
replacement.appendChild(img);
} else {
replacement = img;
}
}

// Add the processed-up-to-now string and the emoji replacement
Expand All @@ -135,7 +135,7 @@ const emojifyTextNode = (node, customEmojis) => {
};

const emojifyNode = (node, customEmojis) => {
for (const child of node.childNodes) {
for (const child of Array.from(node.childNodes)) {
switch(child.nodeType) {
case Node.TEXT_NODE:
emojifyTextNode(child, customEmojis);
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