[Rd] Default broswer for OS X (PR#2725)

[james at freelancepropaganda.com]

Full_Name: James Howison
Version: 1.6.2
OS: OS X (fink install)
Submission from: (NULL) (66.67.80.30)


The default browser for the html help system is not set correctly for OS X.

This makes the html help work great on OS X:

> options(browser = "open")
> help.start()

"open" is an OS X launcher app that inspects a file and launches it with the
appropriate application (it is the same as double clicking).  It launches in the
system preferred browser - which is great - integration with the OS for free :)

Perhaps this could be added to the darwin.hints file (if such a thing is used
for R) or otherwise added in so that it is the default.

The user-experience is definately increased by being able to read the help at
the same time one uses it :)

I've promoted the packager for the OS X fink package to set this as the default
in the build if that is possible.