jasonlong/geo_pattern — pull request #24 by btmills (2014-02-21 02:30:35+00:00)
Title: fix reading beyond hash length

In the concentric circles and nested squares patterns, when `i = 0` i.e. the top left corner of the pattern, `val` for the inner shape is read from `hash[40]`, but the hash itself is only 40 characters long.