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    Oh, a challenge! :) Even the C like C++ version was still using std::string, which is slow. I attached a faster version to a github issue if anybody is morbidly curious.

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      I am. Which github issue?

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          Ah! Part of the article I posted. facepalm

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      I get paid to write C and C++ but all my best work is still in awk. Absolutely wonderful little language.

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        Mawk v1.3.4 updated 2013-12-26: http://invisible-island.net/mawk/CHANGES