Add DSUB integration testss

Author: drdv

Makefile

@@ -97,7 +97,7 @@ coverage-utests.html: utest
 ## Lint the code using `gawk`
 # Warnings to ignore have been stripped below
 .PHONY: lint
-lint: UNINIT := (|SUB|COLOR_.*|VARS|OFFSET|PADDING|DEPRECATED|RECIPEPREFIX|AWK|\
+lint: UNINIT := (sub_array|COLOR_.*|VARS|OFFSET|PADDING|DEPRECATED|RECIPEPREFIX|AWK|\
 				|TARGETS_REGEX|VARIABLES_REGEX|OUTPUT_FORMAT|EXPORT_THEME|UNIT_TEST)
 lint: override AWK := awk
 lint: check-variables
@@ -106,7 +106,7 @@ lint: check-variables
 		-v UNIT_TEST=0 \
 		$(UNIT_TESTS_AWK_FLAGS) \
 		-f $(MAKEFILE_DOC) 2>&1 | \
-		grep -vE "reference to uninitialized variable \`$(UNINIT)'" || echo "lint: OK"
+		grep -vE "reference to uninitialized .* \`$(UNINIT)'" || echo "lint: OK"
 
 # Verify for unintended global variables
 .PHONY: check-variables

test/Makefile.dsub

@@ -0,0 +1,11 @@
+## Description with a dsub: $(VAR)
+t1:
+
+t2: ## This description refers to $(VAR) as well
+
+## $(VAR) and
+## $(Y) will both be replaced
+X :=
+
+## SUB and DSUB $(complement) each other ($(Y)):
+t3:

test/Makefile.substitutions test/Makefile.subtest/Makefile.substitutions renamed to test/Makefile.sub

@@ -0,0 +1,16 @@
+-v SUB='t3:target3:v1 v2' -v DSUB='$(Y):S~y;$(VAR):S~var' test/Makefile.dsub
+-----------------------
+Available targets:
+-----------------------
+t1        Description with a dsub: S~var
+t2        This description refers to S~var as well
+target3   SUB and DSUB $(complement) each other (S~y):
+          v1
+          v2
+
+-----------------------
+Command-line arguments:
+-----------------------
+X         S~var and
+          S~y will both be replaced
+-----------------------

test/integration/test-dsub

@@ -1,4 +1,4 @@
--v SUB='<L:1>$(TARGET):counter-:one two three;<L:0>AWK:awk mawk nawk bawk wak goawk' test/Makefile.substitutions
+-v SUB='<L:1>$(TARGET):counter-:one two three;<L:0>AWK:awk mawk nawk bawk wak goawk' test/Makefile.sub
 -----------------------
 Available targets:
 -----------------------

test/integration/test-substitution-L test/integration/test-sub-Ltest/integration/test-substitution-L renamed to test/integration/test-sub-L

@@ -1,4 +1,4 @@
--v SUB='<L:0>$(TARGET):renamed:' -v VARS=0 test/Makefile.substitutions
+-v SUB='<L:0>$(TARGET):renamed:' -v VARS=0 test/Makefile.sub
 -----------------------
 Available targets:
 -----------------------

test/integration/test-substitution-L0 test/integration/test-sub-L0test/integration/test-substitution-L0 renamed to test/integration/test-sub-L0

@@ -1,4 +1,4 @@
--v SUB='<M:1,L:0>$(TARGET):counter-:one two three;<M:0,L:1>AWK:awk mawk nawk bawk wak goawk' test/Makefile.substitutions
+-v SUB='<M:1,L:0>$(TARGET):counter-:one two three;<M:0,L:1>AWK:awk mawk nawk bawk wak goawk' test/Makefile.sub
 -----------------------
 Available targets:
 -----------------------

test/integration/test-substitution-LM test/integration/test-sub-LMtest/integration/test-substitution-LM renamed to test/integration/test-sub-LM

@@ -1,4 +1,4 @@
--v SUB='<M:0>$(TARGET):counter-:one two three;<M:1>AWK:awk mawk nawk bawk wak goawk' test/Makefile.substitutions
+-v SUB='<M:0>$(TARGET):counter-:one two three;<M:1>AWK:awk mawk nawk bawk wak goawk' test/Makefile.sub
 -----------------------
 Available targets:
 -----------------------

test/integration/test-substitution-M test/integration/test-sub-Mtest/integration/test-substitution-M renamed to test/integration/test-sub-M

@@ -1,4 +1,4 @@
--v SUB='<M:0,L:0,S: ,I:[,T:],N:2>$(TARGET):counter-:one two three;<M:1,L:1,P:+ ,N:3>AWK:awk mawk nawk bawk wak goawk' test/Makefile.substitutions
+-v SUB='<M:0,L:0,S: ,I:[,T:],N:2>$(TARGET):counter-:one two three;<M:1,L:1,P:+ ,N:3>AWK:awk mawk nawk bawk wak goawk' test/Makefile.sub
 -----------------------
 Available targets:
 -----------------------

test/integration/test-substitution-PN test/integration/test-sub-PNtest/integration/test-substitution-PN renamed to test/integration/test-sub-PN

@@ -1,4 +1,4 @@
--v SUB='<M:0,L:0,S: ,I:[,T:]>$(TARGET):counter-:one two three;<M:1,L:1,S:\\,,I:{,T:}>AWK:awk mawk nawk bawk wak goawk' test/Makefile.substitutions
+-v SUB='<M:0,L:0,S: ,I:[,T:]>$(TARGET):counter-:one two three;<M:1,L:1,S:\\,,I:{,T:}>AWK:awk mawk nawk bawk wak goawk' test/Makefile.sub
 -----------------------
 Available targets:
 -----------------------