+AC_MSG_CHECKING(if xterm backspace sends BS or DEL)
+AC_ARG_WITH(xterm-kbs,
+ [ --with-xterm-kbs=XXX specify if xterm backspace sends BS or DEL],
+ [with_xterm_kbs=$withval],
+ [with_xterm_kbs=BS])
+case x$with_xterm_kbs in
+xyes|xno|xBS|xbs|x8)
+ with_xterm_kbs=BS
+ ;;
+xDEL|xdel|x127)
+ with_xterm_kbs=DEL
+ ;;
+*)
+ with_xterm_kbs=$withval
+ ;;
+esac
+AC_MSG_RESULT($with_xterm_kbs)
+XTERM_KBS=$with_xterm_kbs
+AC_SUBST(XTERM_KBS)
+