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# $NetBSD: varmod-head.mk,v 1.5 2022/07/10 21:11:49 rillig Exp $
#
# Tests for the :H variable modifier, which returns the dirname of
# each of the words in the variable value.
.if ${:U a/b/c :H} != "a/b"
. error
.endif
.if ${:U def :H} != "."
. error
.endif
.if ${:U a.b.c :H} != "."
. error
.endif
.if ${:U a.b/c :H} != "a.b"
. error
.endif
.if ${:U a :H} != "."
. error
.endif
.if ${:U a.a :H} != "."
. error
.endif
.if ${:U .gitignore :H} != "."
. error
.endif
.if ${:U trailing/ :H} != "trailing"
. error
.endif
.if ${:U /abs/dir/file :H} != "/abs/dir"
. error
.endif
.if ${:U rel/dir/file :H} != "rel/dir"
. error
.endif
# The head of "/" was an empty string before 2020.07.20.14.50.41, leading to
# the output "before after", with two spaces. Since 2020.07.20.14.50.41, the
# output is "before after", discarding the empty word.
.if ${:U before/ / after/ :H} == "before after"
# OK
.elif ${:U before/ / after/ :H} == "before after"
# No '.info' to keep the file compatible with old make versions.
_!= echo "The modifier ':H' generates an empty word." 1>&2; echo
.else
. error
.endif
# An empty list is split into a single empty word.
# The dirname of this empty word is ".".
.if ${:U :H} != "."
. error
.endif
all: .PHONY
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