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The specs for "lookup" refer, for example, to "html (or any capitalization thereof)." Does this mean just "html or HTML," or does it also include all 14 possible mixed-case combinations?

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All 16 mixed case combinations:

 1. html

 2. Html

 3. hTml

 4. HTml

 5. htMl

 6. HtMl

 7. hTMl

 8. HTMl

 9. htmL

 10. HtmL

 11. HTmL

 12. hTmL

 13. htML

 14. HtML

 15. HTML

 16. hTML

It's 24=16. Just saying. :P But yes any possible capitalization should be considered the same.

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    Yesss nerds for the win!
    – i_am_david
    Aug 3, 2015 at 20:06
  • Actually, two are same case and 14 are mixed case. More important, thanks very much for the answer.
    – Robert Feduniak
    Aug 3, 2015 at 20:21
  • Just try using strcasecmp() as per the advice in the spec. I think that'll help
    – Osman Zakir
    Nov 27, 2016 at 23:27

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