use std::env::var;

pub type EnvVar = (&'static str, &'static str);

pub static ATTACH_SYMBOL:	EnvVar	= ("REMUX_ATTACH_SYMBOL", "*");
pub static CURRENT_SYMBOL:	EnvVar	= ("REMUX_CURRENT_SYMBOL", ">");
pub static NEW_WINDOW_NAME: EnvVar	= ("REMUX_NEW_WINDOW", "");
pub static NEW_RC:			EnvVar	= ("REMUX_NEW_RC", "1");

pub static TMUX: &str				= "TMUX";

///	get or default an environment variable
pub fn env_var(envvar: EnvVar) -> String {
	var(envvar.0).unwrap_or(envvar.1.to_string())
}