Symbol: ISREG
usr/src/cmd/ed/ed.c
838
if (c == 'w' && Fl.st_nlink == 1 && ISREG(lFl)) {
usr/src/cmd/mv/mv.c
982
if (ISREG(s1)) {
usr/src/cmd/vi/port/expreserve.c
150
if (!ISREG(stbuf))