Links to functions reexported from other packages

[krlmlr]

Should point to the original function?

# Observed
downlit::href_topic("install_github", "devtools")
#> [1] "https://devtools.r-lib.org/reference/remote-reexports.html"

# Desired?
downlit::href_topic("install_github", "remotes")
#> [1] "https://remotes.r-lib.org/reference/install_github.html"

# Perhaps with referrer?
downlit::href_topic("install_github", "remotes")
#> [1] "https://remotes.r-lib.org/reference/install_github.html?ref=https://devtools.r-lib.org/reference/remote-reexports.html"

^{Created on 2022-03-23 by the reprex package (v2.0.1)}

[hadley]

downlit already handles reexports, but only use that code path if the topic name is reexports.Rd. I just need to make it a bit more general.