82 bool    intty;  variable
450     intty = isatty(SHIN);  in main()
451     intty |= intact;  in main()
452     if (intty || (intact && isatty(SHOUT))) {  in main()
466     if (loginsh || intact || (intty && isatty(SHOUT)))  in main()
615     if (intty) {  in main()
716     int     oSHIN = -1, oldintty = intty, oinsource = insource;  in srcunit()
768     intty = isatty(SHIN), whyles = 0, gointr = 0;  in srcunit()
803 	intty = oldintty, whyles = oldwhyl, gointr = ogointr;  in srcunit()
993     else if (intty && wantnl) {  in pintr1()
1074 	if (intty && prompt && evalvec == 0) {  in process()
1093 	if ((lex(&paraml) && !seterr && intty) || adrof(STRverbose)) {  in process()
1110 	if (enterhist || (catch && intty && !whyles))  in process()