[Rd] tab-complete for non-syntactic names could attempt backtick-wrapping

[Michael Chirico]

Great suggestion! I've started a patch:
https://bugs.r-project.org/show_bug.cgi?id=18479

On Wed, Mar 1, 2023 at 1:56 AM Ivan Krylov <krylov.r00t using gmail.com> wrote:
>
> В Wed, 1 Mar 2023 01:36:02 -0800
> Michael Chirico via R-devel <r-devel using r-project.org> пишет:
>
> > +comps[non_syntactic] <- paste0("`", comps[non_syntactic], "`")
>
> There are a few more corner cases. For example, comps could contain
> backticks (which should be escaped with backslashes) and backslashes
> (which should also be escaped). Thankfully, \uXXXX-style Unicode escape
> sequences are not currently supported inside backticks, and "escape the
> backslash" rule already takes care of them.
>
> The deparse() function already knows these rules:
>
> name <- 'hello world ` \\uFF'
> cat(deparse1(as.name(name), backtick=TRUE), '\n')
> # `hello world \` \\uFF`
> `hello world \` \\uFF` <- 'hello'
> `hello world \` \\uFF`
> # [1] "hello"
>
> --
> Best regards,
> Ivan