From 0565901fad850dc185ff8bad06417f62983f2ffa Mon Sep 17 00:00:00 2001
From: Sharif Haason <ssh128@scarletmail.rutgers.edu>
Date: Sun, 17 Jul 2022 15:53:56 -0400
Subject: [PATCH] Return a proper error if terminal size fails

---
 src/bin/hexyl.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/bin/hexyl.rs b/src/bin/hexyl.rs
index 3440f96..6d84081 100644
--- a/src/bin/hexyl.rs
+++ b/src/bin/hexyl.rs
@@ -329,7 +329,7 @@ fn run() -> Result<(), AnyhowError> {
         {
             Some(terminal_width)
         } else if matches.is_present("auto_width") {
-            Some(terminal_size().expect("not a tty").0 .0)
+            Some(terminal_size().ok_or_else(|| anyhow!("not a TTY"))?.0 .0)
         } else {
             None
         };