whoami()
A named character vector with entries: username,
fullname, email_address, gh_username.
For the username it tries the LOGNAME, USER,
LNAME and USERNAME environment variables first.
If these are all unset, or set to an empty string,
then it tries running id on Unix-like
systems and whoami on Windows.
For the full name of the user, it queries the system services
and also tries the user's global git configuration.
On Windows, it tries finding the global git configuration
in Sys.getenv("USERPROFILE") if it doesn't find it
in Sys.getenv("HOME") (often "Documents").
For the email address it uses the user's global git
configuration. It tries finding the global git
configuration in Sys.getenv("USERPROFILE")
if it doesn't find it in Sys.getenv("HOME").
For the GitHub username it uses the GITHUB_USERNAME
environment variable then it tries searching on GitHub
for the user's email address.
Other user names: email_address,
fullname, gh_username,
username
if (FALSE) { whoami() }