Problem with secondary expansion and target specific variables

[Thomas Daniel]

The following makefile.1 produces correct results:
-------------------------------
target1 : var := one
target2 : var := two

targets := target1 target2

all : $(targets)

.SECONDEXPANSION:
$(targets) : foo/$$(var)/bar

foo/%/bar :
    mkdir -p $(dir $@)
    touch $@

.PHONY : target1 target2
-------------------------

> make -f makefile.1
mkdir -p foo/one/
touch foo/one/bar
mkdir -p foo/two/
touch foo/two/bar

However, makefile.2 does not pick up var:
-----------------------------------------
target1 : var := one
target2 : var := two

targets := target1 target2

all : $(targets)

.SECONDEXPANSION:
$(targets) : test/$$@

$(targets:%=test/%) : foo/$$(var)/bar

foo/%/bar :
    mkdir -p $(dir $@)
    touch $@

.PHONY : $(targets) $(targets:%=test/%)
------------------------------------

> make -f makefile.2
make: *** No rule to make target `foo//bar', needed by `test/target1'.  
Stop.

According to make documentation:
"when you define a target-specific variable that variable value is also 
in effect for all prerequisites of this target, and all their 
prerequisites, etc."

Since test/target1 is a prerequisite for target1 and var is defined for 
target1, it should be available also for test/target1. Secondary 
expansion works when expanding 'var' for target1 and target2 in 
makefile.1, but it doesn't when expanding it in makefile.2

Am I doing something incorrect here or is it an unimplemented 
functionality, specifically that target specific variables are not 
inherited in prerequisites  of prerequisite?

The behavior is the same in 3.81 and 3.82.