From e55244c4c64830d2830dea81ab6011b61c188d25 Mon Sep 17 00:00:00 2001
From: Nathan Bourgeois <IridescentRosesFall@gmail.com>
Date: Sat, 17 Oct 2020 21:13:10 -0400
Subject: [PATCH] BYOS support for system.isatty(fd: fd_t); (#6686)

---
 lib/std/os.zig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/std/os.zig b/lib/std/os.zig
index 7a26126b1c36d0b85cfc1895e16d48e67df8a97d..899488456619c0d73cdd656f34433e7198dde9ba 100644
--- a/lib/std/os.zig
+++ b/lib/std/os.zig
@@ -2588,7 +2588,7 @@ pub fn isatty(handle: fd_t) bool {
             }
         }
     }
-    unreachable;
+    return system.isatty(handle) != 0;
 }
 
 pub fn isCygwinPty(handle: fd_t) bool {
-- 
2.54.0