roff_getname
maclen = roff_getname(&cp, ln, ppos);
static size_t roff_getname(char **, int, int);
namesz = roff_getname(&cp, ln, ppos);
namesz = roff_getname(&cp, ln, ppos);
sz = roff_getname(&cp, ln, cp - v);
namesz = roff_getname(&string, ln, pos);
keysz = roff_getname(&val, ln, pos);
namesz = roff_getname(&cp, ln, pos);
namesz = roff_getname(&cp, ln, (int)(cp - buf->buf));
newsz = roff_getname(&oldn, ln, pos);
oldsz = roff_getname(&end, ln, oldn - buf->buf);
oldsz = roff_getname(&newn, ln, pos);
newsz = roff_getname(&end, ln, newn - buf->buf);