Re: clarifications about “10.8 Implicit Rule Searc h Algorithm.”

I've read =E2=80=9CChains of Implicit Rules=E2=80=9D, but unfortunately tha=
t doesn=E2=80=99t help me.
Maybe I=E2=80=99ve described my difficulty not very clearly.
Let me try to explain it in more detail.
> At that point make calls pattern_search recursively to find a rule to bui=
ld 'aaa'.
So now our new target is=E2=80=AF=E2=80=98aaa=E2=80=99, and we must start s=
earching implicit
rules from the beginning.
We take the pattern rule=E2=80=AF=E2=80=98%.o=E2=80=AF:=E2=80=AFaaa=E2=80=
=99=E2=80=AFand discard it not because of
recursion, but because its target=E2=80=AF=E2=80=98%.o=E2=80=99=E2=80=AFdoe=
sn=E2=80=99t match=E2=80=AF=E2=80=98aaa=E2=80=99.
And the message =E2=80=9CAvoiding implicit rule recursion for rule '%.o:=E2=
=80=AFaaa'=E2=80=9D
doesn=E2=80=99t appear at all.

If instead of=E2=80=AF=E2=80=98%.o=E2=80=AF:=E2=80=AFaaa=E2=80=99=E2=80=AFw=
e have=E2=80=AF=E2=80=98%.o=E2=80=AF:=E2=80=AFaaa.o=E2=80=99, and we search=
 for
rules for=E2=80=AF=E2=80=98aaa.o=E2=80=99, then in that case the recursion =
message would make
sense to me.

Where am I missing the point?

regards, Dmitry