Re^3: \b in Unicode regex

[Anonymous Monk]

Thanks a lot, Monks.

Knowing that there's no issue wuth \b, I kept investigating. Turned out that one of the strings wasn't really utf8 (for some reason, my terminal insisted on printing it as utf8, though). utf8::decode solved the problem.

[ikegami]

You actually had the opposite problem: You had UTF-8, but the regex engine expects a string of Unicode Code Points^[1]. utf8::decode provides the latter from the former.

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1. More specifically, it's \w, \b, \d, etc that are defined in terms of UCP.