Function no_color::is_no_color

pub fn is_no_color() -> bool

Function returns true if NO_COLOR environment variable exists, false if not.

note: std::env::var_os function may panic if key is empty, contains an ASCII equals sign '=' or the NUL character '\0', or when the value contains the NUL character. Read more https://doc.rust-lang.org/std/env/fn.var_os.html