collapse_root_and_member: Put together a root name with a member name

In envnames: Keep Track of User-Defined Environment Names

Description

This is the opposite operation of extract_root_and_last_member(): the root and its supposed member are put together using the $ separator, as in env_of_envs$env1$x, where the root and the member could be either env_of_envs$env1 and x or env_of_envs and env1$x.

Usage

collapse_root_and_member(root, member)

Arguments

root	String containing the root name to concatenate. It may be NULL or empty.
member	String containing the member name to concatenate. It may be NULL or empty.

Value

A string concatenating the root and the member names with the $ symbol. If any of them is empty or NULL, the other name is returned or "" if the other name is also empty or NULL.

See Also

extract_root_and_last_member()

envnames documentation built on Dec. 8, 2020, 9:07 a.m.