Different environments in NIF API calls

[Harris, Robert]

Hello,

I'm trying to understand the full implications of

"All API functions that read or write terms has the environment
that the term belongs to as the first function argument."

For example, can enif_get_map_value() be called with a map from
a process-bound environment and a key from a process-independent
one?  If so, which environment would be used?

Similarly, does enif_compare require that its arguments share
the same environment?

Regards,

Robert

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