halfbyte/afm — pull request #4 by yob (2013-04-07 06:08:54+00:00)
Title: fix AFM#metrics_for to work across ruby 1.8, 1.9 and 2.0

* on 1.8 String#[] returns the character code at that position as an int
* on 1.9+ String#[] returns a single character string