query-replace on region highlights too much

[Kai Großjohann]

I mark a region, I invoke M-%.  This will perform the query-replace on
the marked region only.  (I forget whether that's always the case, or
whether I have turned on something to make it so.  I think it works
like this because I use transient-mark-mode.)

The problem is that the highlighting of the search string is performed
in the whole buffer, not only in the region where replacing is going
to happen.

Kai