In perlreref in the discussion of Escape Sequences it says:

\b An assertion, not backspace, except in a character class

so there is no expectation that \b (an assertion) should have consistent behavior with \u (an escape sequence character).

Perl is environmentally friendly - it saves trees

In reply to Re: Regex bug? (/u not cooperating with /x) by GrandFather
in thread Regex bug? (/u not cooperating with /x) by mrpeabody

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