[Rd] PATCH: Asserting that 'connection' used has not changed + R_GetConnection2()

SUMMARY: I'm proposing that R assert that 'connection' options have not changed since first created such that R will produce the following error: > fh <- file("a.txt", open = "w+") > cat("hello\n", file = fh) > close(fh) > fh2 <- file("b.txt", open = "w+") > cat("world\n", file = fh2) > cat("he

Re: [Rd] disappearing paragraphs in html rendering of text from Rd macros

> Georgi Boshnakov > on Mon, 29 Oct 2018 08:57:50 + writes: > Recent changes in R-devel seem to change the HTML rendering of text returned > by Rd macros, > in that now empty lines do not cause paragraphs to end (the empty lines are > kept but tags are not set). > As a result,