aaac7fed
 liuqimichale
add
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module.exports = function escape(url) {
if (typeof url !== 'string') {
return url
}
// If url is already wrapped in quotes, remove them
if (/^['"].*['"]$/.test(url)) {
url = url.slice(1, -1);
}
// Should url be wrapped?
// See https://drafts.csswg.org/css-values-3/#urls
if (/["'() \t\n]/.test(url)) {
return '"' + url.replace(/"/g, '\\"').replace(/\n/g, '\\n') + '"'
}
return url
}
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