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[src/trunk]: src/usr.bin/make/unit-tests make(1): add test for using the :D v...
details: https://anonhg.NetBSD.org/src/rev/878c6e18b396
branches: trunk
changeset: 1014712:878c6e18b396
user: rillig <rillig%NetBSD.org@localhost>
date: Tue Sep 29 18:48:43 2020 +0000
description:
make(1): add test for using the :D variable modifier as comment
diffstat:
usr.bin/make/unit-tests/varmod-defined.mk | 9 ++++++++-
1 files changed, 8 insertions(+), 1 deletions(-)
diffs (23 lines):
diff -r 0285f42be30a -r 878c6e18b396 usr.bin/make/unit-tests/varmod-defined.mk
--- a/usr.bin/make/unit-tests/varmod-defined.mk Tue Sep 29 18:44:30 2020 +0000
+++ b/usr.bin/make/unit-tests/varmod-defined.mk Tue Sep 29 18:48:43 2020 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: varmod-defined.mk,v 1.5 2020/09/12 07:04:51 rillig Exp $
+# $NetBSD: varmod-defined.mk,v 1.6 2020/09/29 18:48:43 rillig Exp $
#
# Tests for the :D variable modifier, which returns the given string
# if the variable is defined. It is closely related to the :U modifier.
@@ -75,6 +75,13 @@
. error
.endif
+# Since the variable with the empty name is never defined, the :D modifier
+# can be used to add comments in the middle of an expression. That
+# expression always evaluates to an empty string.
+.if ${:D This is a comment. } != ""
+. error
+.endif
+
# TODO: Add more tests for parsing the plain text part, to cover each branch
# of ApplyModifier_Defined.
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