Error when cloning repo

[jartuso]

Hi Dave!

I came across your piece on rooklift today via hackernews and really enjoyed it. I work at a company that makes wearable sensors and have a few side projects involving chess.

Eventually I stumbled upon your library and was encouraged by your readme to contribute. I was hoping to add "In Praise of Idleness" by Bertrand Russell, (PDF) a favorite of mine. While cloning your repo I hit the following error, seems like an issue with invalid characters in some file names.

error: invalid path 'math/Clader - Why Twelve Tones? The Mathematics Of Musical Tuning.pdf' fatal: unable to checkout working tree warning: Clone succeeded, but checkout failed.

I'm a github novice, so it's possible the issue is on my end. Rather than give up entirely, I figured I could deliver the suggestion just as well via an issue.

Thanks for the morning reading!

[dmvaldman]

thanks for pointing this out! i think it's because filenames can't have "?" on Windows machines. just pushed up a fix if you want to try again. I'll give that Russell essay a read!