$OpenBSD: escname.in,v 1.3 2017/07/04 14:53:27 schwarze Exp $
nr-escname - escape sequences in register names .nr first 1 .nr second 2 .nr first\\second 3 .nr first\esecond 4 \n[first] \n[second] \n[first\\second]

.rr first\esecond \n[first] \n[second] \n[first\\second]

.rr first\\second \n[first] \n[second] \n[first\\second]

incomplete: \n[second