.SECONDEXPANSION:

obfn1:=/./.
#obfn=$(obfn1)$(eval obfn1=$(patsubst /.//////%,/.//./%,$(subst /.//////,//./,$(obfn1)/)))
#obfn=$(obfn1)$(eval pr$(obfn1)=$1)$(eval cmd$(obfn1)=$2)$(eval obfn1:=$(subst /.//////,//./,$(patsubst /.//////%,/././%,$(obfn1:.=/.))))
obfn=$(obfn1)$(eval pr=$1)$(eval cmd=$2)$(eval obfn1:=$(subst /.//////,//./,$(patsubst /.//////%,/././%,$(obfn1:.=/.))))

digits=0 1 2 3 4 5 6 7 8 9

%yxxx: $(foreach d,$(digits),%$dyxx)
	
%yxx: $(foreach d,$(digits),%$dyx)
	
%yx: $(foreach d,$(digits),%$dy)
	
#%y: $$(call obfn,FORCE,$$$$(info Running $$@ $$$$@))
%y: $$(call obfn,,)
	
/./%: $$(pr)
	$(cmd)
FORCE: