Provide an option for custom link formatting

[michaelquinn32]

First of all, this is an awesome update to the default pager. Bravo.

I noticed that you currently leave links in the markdown format. While this is somewhat useful, I was wondering if there was a way that we could also suppress it to get back to the bare approach provided by the default pager.

Thanks!

[mdequeljoe]

thanks!
We can revert back to the Rd2txt output for links and hrefs by setting the option:

options(rdoc.text_formats = rdoc::rdoc_text_formats(link = NULL, href = NULL))

[gaborcsardi]

Somewhat related, dev crayon has real hyperlinks:
https://github.com/r-lib/crayon/blob/master/R/link.R

I don't know how we could support jumping to another manual page, though.