target-specific 'define'd variables (3.80)?

[Will Partain]

Hi; I don't know if the little Makefile below *ought* to
work or not; it seems it should.  I could be that there's a
bug, or that an example in the documentation would be enough.
Keep up the excellent work,

Will

==========

foo : \
define myvar
@echo This is a multi-line definition
@echo of myvar with foo in it.
endef

bar : \
define myvar
@echo This is a multi-line definition
@echo of myvar with bar in it.
endef

foo :
        $(myvar)

bar :
        $(myvar)