static-pattern local variables?

[Britton Kerin]

 I notice that implicit-rule local variables now work:

BBS = foo.bb

%.bb: SHELL = /usr/bin/perl
%.bb: .SHELLFLAGS = -w -E
$(BBS): %.bb: %.aa
        not system("cp $< $@") or die;

any change we could take the next step and make static-pattern local
vars?  Like so:

BBS = foo.bb

$(BBS): %.bb: SHELL = /usr/bin/perl
$(BBS): %.bb: .SHELLFLAGS = -w -E
$(BBS): %.bb: %.aa
        not system("cp $< $@") or die;

I try to avoid non-static pattern rules because they seem to often
result in confusing behavior and confusing error messages, and I'd
like to have local variables correctly scoped.

Britton