bug#22589: 25.0.90; First match found by isearch-forward-symbol is not necessarily a symbol.

[Juri Linkov]

> I agree that this is a useful feature.  Not having it would make
> entering the search pattern confusing.
>
> But I think it should be documented.  When does it occur, and what else
> is matched (one or two sentences).
>
> There could also be some indication when this first match is not a
> "real" match - but that might be overkill.

Then we could use the already existing indication "[pending]"
in the search prompt.