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fix regional emojis converted to flags (#9294)

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Co-authored-by: grimhilt <grimhilt@users.noreply.github.com>
Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>
Co-authored-by: Faye Duxovni <duxovni@duxovni.org>
Co-authored-by: Faye Duxovni <fayed@element.io>
Fixes https://github.com/vector-im/element-web/issues/19000
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grimhilt 2023-01-31 14:08:35 +01:00 • committed by GitHub
parent 262c2fcff2
commit 5a08859e37
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GPG key ID: 4AEE18F83AFDEB23
4 changed files with 71 additions and 16 deletions
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20
src/HtmlUtils.tsx
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@ -49,11 +49,8 @@ const SURROGATE_PAIR_PATTERN = /([\ud800-\udbff])([\udc00-\udfff])/;
// (with plenty of false positives, but that's OK)
const SYMBOL_PATTERN = /([\u2100-\u2bff])/;
// Regex pattern for Zero-Width joiner unicode characters
const ZWJ_REGEX = /[\u200D\u2003]/g;
// Regex pattern for whitespace characters
const WHITESPACE_REGEX = /\s/g;
// Regex pattern for non-emoji characters that can appear in an "all-emoji" message (Zero-Width Joiner, Zero-Width Space, other whitespace)
const EMOJI_SEPARATOR_REGEX = /[\u200D\u200B\s]/g;
const BIGEMOJI_REGEX = new RegExp(`^(${EMOJIBASE_REGEX.source})+$`, "i");
@ -591,14 +588,11 @@ export function bodyToHtml(content: IContent, highlights: Optional<string[]>, op
if (!opts.disableBigEmoji && bodyHasEmoji) {
let contentBodyTrimmed = contentBody !== undefined ? contentBody.trim() : "";
// Ignore spaces in body text. Emojis with spaces in between should
// still be counted as purely emoji messages.
contentBodyTrimmed = contentBodyTrimmed.replace(WHITESPACE_REGEX, "");
// Remove zero width joiner characters from emoji messages. This ensures
// that emojis that are made up of multiple unicode characters are still
// presented as large.
contentBodyTrimmed = contentBodyTrimmed.replace(ZWJ_REGEX, "");
// Remove zero width joiner, zero width spaces and other spaces in body
// text. This ensures that emojis with spaces in between or that are made
// up of multiple unicode characters are still counted as purely emoji
// messages.
contentBodyTrimmed = contentBodyTrimmed.replace(EMOJI_SEPARATOR_REGEX, "");
const match = BIGEMOJI_REGEX.exec(contentBodyTrimmed);
emojiBody =