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Prevent space characters from stopping big emoji messages

pull/21833/head
Andrew Morgan 2019-03-05 12:33:37 +00:00
parent a6a3716576
commit 0516556be9
1 changed files with 15 additions and 2 deletions
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17
src/HtmlUtils.js
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@ -48,6 +48,9 @@ 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 = new RegExp("\u200D|\u2003", "g");
// And this is emojione's complete regex
const EMOJI_REGEX = new RegExp(emojione.unicodeRegexp+"+", "gi");
const COLOR_REGEX = /^#[0-9a-fA-F]{6}$/;
@ -231,7 +234,7 @@ const transformTags = { // custom to matrix
'code': function(tagName, attribs) {
if (typeof attribs.class !== 'undefined') {
// Filter out all classes other than ones starting with language- for syntax highlighting.
const classes = attribs.class.split(/\s+/).filter(function(cl) {
const classes = attribs.class.split(/\s/).filter(function(cl) {
return cl.startsWith('language-');
});
attribs.class = classes.join(' ');
@ -498,7 +501,17 @@ export function bodyToHtml(content, highlights, opts={}) {
let emojiBody = false;
if (!opts.disableBigEmoji && bodyHasEmoji) {
EMOJI_REGEX.lastIndex = 0;
const contentBodyTrimmed = strippedBody !== undefined ? strippedBody.trim() : '';
let contentBodyTrimmed = strippedBody !== undefined ? strippedBody.trim() : '';
// Ignore spaces in body text. Emojis with spaces in between should
// still be counted as purely emoji messages.
contentBodyTrimmed = contentBodyTrimmed.replace(/\s/g, '');
// 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, '');
const match = EMOJI_REGEX.exec(contentBodyTrimmed);
emojiBody = match && match[0] && match[0].length === contentBodyTrimmed.length;
}