Re: toolchain/38315: make: ?= should resolve LHS

["Simon J. Gerraty" <sjg%crufty.net@localhost>]

> > The alternative? 
> just do

Yep, after I had some coffee I did that ;-)
Sent the updated patch this morning.

> I messed up the test case.  I think I meant this:
> 
>       DOLLAR = $$
>       LBRACE = {
>       RBRACE = }
>       # This creates a variable whose name is 'V.${DOLLAR}'.
>       V.$$${LBRACE}DOLLAR${RBRACE} = bar
>         # This should set the variable whose name is 'V.$', not the
>         # variable whose name is 'V.${DOLLAR}'.  If VarFind is called
>         # before looking for '$' in the LHS then I think it will
>         # incorrectly think "Nothing to do, because the variable whose
>         # name is 'V.${DOLLAR}' is already set".
>       V.${DOLLAR} ?= baz
> 
>       all:
>               # I want this to print "baz", but I think it will print "bar"
>               @echo V.$$$$= ${V.$$}

So gmake prints 'baz', our make (with[out] patch - original or
revised)  and freebsd's print ''.

--sjg