I think this is a fine provenance research!

The original from @rrenaud at https://github.com/rrenaud/Gibberish-Detector references a SO answer

This is a nice (IMO) answer to this guys question on stackoverflow. http://stackoverflow.com/questions/6297991/is-there-any-way-to-detect-strings-like-putjbtghguhjjjanika/6298040#comment-7360747

And the SO author is the same as the GH author: https://stackoverflow.com/users/286449/rob-neuhaus

So this settles the original license to be MIT as per @rrenaud choice.

Then we have this chain of forks and derivations to document:

• this file
  • derived from @yapus https://github.com/yapus/gibberish
    • derived from @vsobolmaven https://github.com/vsobolmaven/gibberish
      • derived from @mgreenw https://github.com/mgreenw/gibberish
        • derived from @pjanata https://github.com/pjanata/Gibberish-Detector
          • ultimately derived from @rrenaud https://github.com/rrenaud/Gibberish-Detector

It would be nice and the right thing to do to keep the credits to each author for this chain of forks and refinements and ... I guess we could either:

• add that as extra doc in the ABOUT file
• OR get a full git history for these files with some git fu and git filter repo?

(The license has stayed MIT all the way so this is about credits, not the license itself)

Happy to help with this, if guided as to what to do.