This blog is updated daily..
A general description is here.
HTML help is now generated dynamically using a HTTP server running in the R process and listening on the loopback interface.
- The implementation is not quite complete.
- Those who need to worry about security implications of such a server can disable it by setting the environment variable R_DISABLE_HTTPD to a non-empty value. They may want to build static HTML pages, which is done by the configure option --enable-prebuilt-html (which adds --html to the default for installing packages).
- If the server is disabled and there are no static HTML pages, a HTML help page wthout links is generated as a file:// URL.
- The Java/Javascript search engine has been replaced by an HTML interface to help.search(): currently this means that search from HTML is only available if the HTTP server is used. help.start() no longer has an argument 'searchEngine' as it is no longer needed.
- Details may change before release.
legend() now can specify the 'border' color of filled boxes, thanks to a patch from Frederic Schutz.
CHM help is no longer made by default, and support for it may be withdrawn entirely before release.