pub const VAR: &str = "COMPLETE";Available on crate feature
completion only.Expand description
The environment variable that turns a run into a completion request.
It is clap_complete’s own default, which Homebrew’s :clap format
sets, so COMPLETE=zsh toy prints the same script as toy completion zsh. An empty value or 0 leaves the run alone. clap_complete removes
the variable before it calls a value completer, so a child process never
answers a request meant for its parent.