[ESS] launch help.start() in EWW browser

[Stephen Berman]

On Wed, 10 Sep 2025 18:58:42 +0200 Sebastian Meyer via ESS-help <ess-help using r-project.org> wrote:

> I just noticed there is a related function already in ESS:
> ess-rutils-html-docs ("Use ‘browse-url’ to navigate R html
> documentation."). It no longer seems to work though. From an ESS[R] buffer, I
> get 'Wrong type argument: stringp, nil' and from iESS I get 'Search failed:
> "http://"'. Maybe that function can be resurrected?

I don't the wrong-type-argument error but I do get the failed search
error.  The attached patch fixes it for me and then I can use EWW to
browse the R docs.

Steve Berman