On Tue, Sep 29, 2020 at 3:08 AM Jean Louis <bugs@gnu.support> wrote:
I was trying out this paragraph from DEMO file:

> The output of `grep -n', the UNIX line pattern matcher, can be activated as
> buttons that jump to each matched line within its source file; use {M-x grep
> RET} or even better, the Hyperbole recursive directory grep, {C-h h f g}.

{C-h h f g} works fine here.

It does not do what is expected, for example if I write "facebook" in
elpa/hyperbole directory, it will not give me any results, if I do
classic grep, it gives me result

Are you saying you are in a buffer whose default-directory is the elpa/hyperbole directory and your grep returns no results?  If so, I don't see that problem with 7.1.3.

Suggestion:

The minibuffer description: Rgrep below current dir... could actually
show the current dir to the user.

Maybe except long paths would likely get in the way.
Bob