Sync with manuals from netbsd-8 branch.

[minix3.git] / usr.bin / make / unit-tests / ternary.mk

all:
        @for x in "" A= A=42; do ${.MAKE} -f ${MAKEFILE} show $$x; done

show:
        @echo "The answer is ${A:?known:unknown}"
        @echo "The answer is ${A:?$A:unknown}"
        @echo "The answer is ${empty(A):?empty:$A}"