From 9e4b0a7a58b3d7803c171eab2d146237b55521c0 Mon Sep 17 00:00:00 2001
From: Siraaj Khandkar <siraaj@khandkar.net>
Date: Wed, 4 Sep 2019 19:07:21 -0400
Subject: [PATCH] Warn if list item appears more than once

---
 list | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/list b/list
index 04d5d3c..2c518e8 100755
--- a/list
+++ b/list
@@ -6,6 +6,9 @@
 
 END {
     for (x in xs) {
+        if (xs[x] > 1) {
+            printf ">>> [WARNING] : '%s' was listed %d times.\n", x, xs[x] > "/dev/stderr"
+        }
         printf("%s%s", sep, x)
         sep = " "
     }
-- 
2.20.1