[src/trunk]: src/usr.bin/make/unit-tests tests/make: explain that assignments...

[rillig <rillig%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/d5eaa336b093
branches:  trunk
changeset: 366001:d5eaa336b093
user:      rillig <rillig%NetBSD.org@localhost>
date:      Sun May 08 10:14:40 2022 +0000

description:
tests/make: explain that assignments ignore leading spaces

diffstat:

 usr.bin/make/unit-tests/varmod-quote-dollar.exp |   2 ++
 usr.bin/make/unit-tests/varmod-quote-dollar.mk  |  11 +++++++++--
 2 files changed, 11 insertions(+), 2 deletions(-)

diffs (31 lines):

diff -r 2a57d416a824 -r d5eaa336b093 usr.bin/make/unit-tests/varmod-quote-dollar.exp
--- a/usr.bin/make/unit-tests/varmod-quote-dollar.exp   Sun May 08 08:20:16 2022 +0000
+++ b/usr.bin/make/unit-tests/varmod-quote-dollar.exp   Sun May 08 10:14:40 2022 +0000
@@ -1,2 +1,4 @@
 !"#$$%&'()*+,-./09:;<=>?@AZ[\]^_`az{|}~
+!"#$$%&'()*+,-./09:;<=>?@AZ[\]^_`az{|}~
+ !"#$$%&'()*+,-./09:;<=>?@AZ[\]^_`az{|}~
 exit status 0
diff -r 2a57d416a824 -r d5eaa336b093 usr.bin/make/unit-tests/varmod-quote-dollar.mk
--- a/usr.bin/make/unit-tests/varmod-quote-dollar.mk    Sun May 08 08:20:16 2022 +0000
+++ b/usr.bin/make/unit-tests/varmod-quote-dollar.mk    Sun May 08 10:14:40 2022 +0000
@@ -1,10 +1,17 @@
-# $NetBSD: varmod-quote-dollar.mk,v 1.3 2022/01/22 17:10:51 rillig Exp $
+# $NetBSD: varmod-quote-dollar.mk,v 1.4 2022/05/08 10:14:40 rillig Exp $
 #
 # Tests for the :q variable modifier, which quotes the string for the shell
 # and doubles dollar signs, to prevent them from being interpreted by a
 # child process of make.
 
+# The newline and space characters at the beginning of this string are passed
+# to the child make.  When the child make parses the variable assignment, it
+# discards the leading space characters.
 ASCII_CHARS=   ${.newline} !"\#$$%&'()*+,-./09:;<=>?@AZ[\]^_`az{|}~
 
 all:
-       @${MAKE} -r -f /dev/null CHARS=${ASCII_CHARS:q} -V CHARS
+       @${MAKE} -r -f /dev/null \
+           CHARS=${ASCII_CHARS:q} \
+           TWICE=${ASCII_CHARS:q}${ASCII_CHARS:q} \
+           -V CHARS \
+           -V TWICE