U+2009 matches \s, so you go in an infinite loop.

First pass of while loop: "SGB\x{0020}I" gets replaced with "SGB\x{2009}I"
Second pass of while loop: "SGB\x{2009}I" gets replaced with "SGB\x{2009}I"
Third pass of while loop: "SGB\x{2009}I" gets replaced with "SGB\x{2009}I"
...

Sorry, I can't help find you a solution right now. I gotta run.

In reply to Re: regexp::assemble and dispatch-table with unicode by ikegami
in thread regexp::assemble and dispatch-table with unicode by ajan

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