twitter/cloudhopper-commons-charset — pull request #5 by chadselph (2014-01-05 03:52:04+00:00)
Title: include form feed (U+000C) in GSM

See evidence of existence here:

ftp://ftp.unicode.org/Public/MAPPINGS/ETSI/GSM0338.TXT
http://en.wikipedia.org/wiki/GSM_03.38

I'd be happy to write a test if you want me to.