Add support in regular expressions for UTF-8 whitespace detection #1787
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We ran across a nasty bug at Braze where a customer was supplying the UTF-8 non-breaking space character in a Liquid template they were providing to us, and it took a very long time to debug why it was not parsing correctly. It turns out that the user-supplied Liquid string had some UTF-8 non-breaking spaces in it, which the current regular expressions do not count as whitespace (
\s
only includes ASCII whitespace, while[[:space:]]
includes ASCII and UTF-8 whitespace characters).I replaced
\s
everywhere, but I added a single test case that red-greens against the existing code. Getting full coverage of every possibility seemed excessive, although I'm open to implementing more thorough tests if it's needed before merging.Co-authored-by: Chris Watkins [email protected]