Clickable links in the main error message (both URLs and code)

[wlandau]

@hadley suggested this in #1310 (reply in thread). I did improve the main error message of tar_make() recently, but I am not sure how to make the text clickable.

[wlandau]

I found cli::style_hyperlink() from looking at the rlang source code. That should work.

[wlandau]

Actually, cli_text() is what we should be using:

> cli::cli_text("Help on run {.run rlang::abort('oh no')}")
Help on run rlang::abort('oh no')
> rlang::abort('oh no')
Error:
! oh no
Run `rlang::last_trace()` to see where the error occurred.
> cli::cli_text("Help on run {.url https://github.com}")
Help on run <https://github.com>

[wlandau]

Switching back to style_hyperlink because cli_text() is having trouble getting code links to work. This is the best I have found:

cli_code <- function(code) {
  cli::style_hyperlink(text = code, url = paste0("x-r-run:", code))
}

cli_code("targets::tar_meta(x)") works, but the links are not clickable for any of cli_code("targets::tar_meta(any_of(x))"), cli_code("tar_meta(x)"), or cli_code("targets::tar_meta(x)$error"). So trying to added would be inconsistent and set up user expectations to be frustrated. Let's stick with the URLs until there is better support for clickable code.

[wlandau]

Added clickable URLs in bc8afb5.