When called with no arguments, gm_scopes() returns a named character vector of scopes associated with the Gmail API. If gm_scopes(scopes =) is given, an abbreviated entry such as "gmail.readonly" is expanded to a full scope ("https://www.googleapis.com/auth/gmail.readonly" in this case). Unrecognized scopes are passed through unchanged.
gm_scopes(scopes =NULL)
Arguments
scopes: One or more API scopes. Each scope can be specified in full or, for Gmail API-specific scopes, in an abbreviated form that is recognized by gm_scopes():