From a3cc2276208e63ca8b21eed414bc08708eb4dd03 Mon Sep 17 00:00:00 2001
From: Jeremy Soller <jackpot51@gmail.com>
Date: Sat, 30 Jul 2016 08:37:13 -0600
Subject: [PATCH] Convert VarError to io::Error (#41)

---
 src/tty.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/tty.rs b/src/tty.rs
index c02d8e1..7413dcf 100644
--- a/src/tty.rs
+++ b/src/tty.rs
@@ -21,7 +21,8 @@ pub fn is_tty<T: AsRawFd>(_stream: T) -> bool {
 #[cfg(target_os = "redox")]
 pub fn get_tty() -> io::Result<fs::File> {
     use std::env;
-    fs::OpenOptions::new().read(true).write(true).open(try!(env::var("TTY")))
+    let tty = try!(env::var("TTY").map_err(|x| io::Error::new(io::ErrorKind::NotFound, x)));
+    fs::OpenOptions::new().read(true).write(true).open(tty)
 }
 
 /// Get the TTY device.