Module Name: src
Committed By: rillig
Date: Thu Nov 2 05:46:26 UTC 2023
Modified Files:
src/usr.bin/make/unit-tests: var-op-append.mk
Log Message:
tests/make: test appending to an environment variable
To generate a diff of this commit:
cvs rdiff -u -r1.11 -r1.12 src/usr.bin/make/unit-tests/var-op-append.mk
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/usr.bin/make/unit-tests/var-op-append.mk
diff -u src/usr.bin/make/unit-tests/var-op-append.mk:1.11 src/usr.bin/make/unit-tests/var-op-append.mk:1.12
--- src/usr.bin/make/unit-tests/var-op-append.mk:1.11 Thu Nov 2 05:14:58 2023
+++ src/usr.bin/make/unit-tests/var-op-append.mk Thu Nov 2 05:46:26 2023
@@ -1,4 +1,4 @@
-# $NetBSD: var-op-append.mk,v 1.11 2023/11/02 05:14:58 rillig Exp $
+# $NetBSD: var-op-append.mk,v 1.12 2023/11/02 05:46:26 rillig Exp $
#
# Tests for the '+=' variable assignment operator, which appends to a
# variable, creating it if necessary.
@@ -56,4 +56,33 @@ VAR.${:U\$\$\$\$\$\$\$\$}+= dollars
. error
.endif
+
+# Appending to an environment variable in the global scope creates a global
+# variable of the same name, taking its initial value from the environment
+# variable. After the assignment, the environment variable is left as-is,
+# the value of the global variable is not synced back to the environment
+# variable.
+export ENV_PLUS_GLOBAL=from-env-value
+ENV_PLUS_GLOBAL+= appended-value
+.if ${ENV_PLUS_GLOBAL} != "from-env-value appended-value"
+. error
+.endif
+EXPORTED!= echo "$$ENV_PLUS_GLOBAL"
+.if ${EXPORTED} != "from-env-value"
+. error
+.endif
+
+# Appending to an environment variable in the command line scope ignores the
+# environment variable.
+export ENV_PLUS_COMMAND=from-env-value
+.MAKEFLAGS: ENV_PLUS_COMMAND+=appended-command
+.if ${ENV_PLUS_COMMAND} != "appended-command"
+. error ${ENV_PLUS_COMMAND}
+.endif
+EXPORTED!= echo "$$ENV_PLUS_GLOBAL"
+.if ${EXPORTED} != "from-env-value"
+. error
+.endif
+
+
all:
