I've run it through versions of abcm2ps (v3.7.0), abc2midi(v1.23) abctools (v1.3) and abcmidi (abcmidifier - v0.9beta) under XP/Pro. (I have several other programs for abc but don't use them). Most complain about the v2 extensions (clef and voice) to the older standard but all read the file and produce the correct (or what seems to be without detailed checking) print out or midi file.
(I haven't checked software status recently, but not much was handling the v2 changes when I last looked; I generally avoid them if possible).