^[[>##m and ^[[>##n are legal escape sequences, but were being parsed as if they were ^[[##m or ^[[##n. Added a test for prefix character ('>'
is the only legal one) See http://invisible-island.net/xterm/ctlseqs/ctlseqs.html, codes for CSI > P s ; P s m
If the prefix char is present, ignores the control sequence, since that code isn't implemented.