Dear all,
I am attempting to use `R_GetCurrentEnv()` to return the current
environment within C code, but it seems to always return the global
environment.
Specifically, I would like to use it as an argument to R_NewEnv() so it
is created with the correct enclosing environment. I also have functions
in the environment that reference symbols in the closure and I would
also like to use `R_GetCurrentEnv()` as an argument to `SET_CLOENV()`.
My workaround at the moment is to pass `environment()` as one of the
arguments to the `.Call()`. For the actual code I am referring to:
https://github.com/shikokuchuo/nanonext/blob/main/src/aio.c#L516-L535
where I am currently passing `environment()` as 'clo' whereas ideally I
would be able to use `R_GetCurrentEnv()` instead.
There is an open Bugzilla report from 2020 that says `R_GetCurrentEnv()`
only returns the base namespace from within a `.Call()`, however I see
that the proposed patch has already been adopted in the R source.
It seems that the function was introduced (fairly) recently in R 3.6,
presumably for such uses. I would like to know if this is not the case
or else confirmation that this is an outstanding bug.
Thanks,
Charlie
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