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# $Id: varmisc.mk,v 1.5 2015/10/12 17:10:48 sjg Exp $
#
# Miscellaneous variable tests.
all: unmatched_var_paren D_true U_true D_false U_false Q_lhs Q_rhs NQ_none
unmatched_var_paren:
@echo ${foo::=foo-text}
True = ${echo true >&2:L:sh}TRUE
False= ${echo false >&2:L:sh}FALSE
VSET= is set
.undef UNDEF
U_false:
@echo :U skipped when var set
@echo ${VSET:U${False}}
D_false:
@echo :D skipped if var undef
@echo ${UNDEF:D${False}}
U_true:
@echo :U expanded when var undef
@echo ${UNDEF:U${True}}
D_true:
@echo :D expanded when var set
@echo ${VSET:D${True}}
Q_lhs:
@echo :? only lhs when value true
@echo ${1:L:?${True}:${False}}
Q_rhs:
@echo :? only rhs when value false
@echo ${0:L:?${True}:${False}}
NQ_none:
@echo do not evaluate or expand :? if discarding
@echo ${VSET:U${1:L:?${True}:${False}}}
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