From ccaad0202dab92b015ead706ba551b0143fc7d78 Mon Sep 17 00:00:00 2001
From: Scott Worley <scottworley@scottworley.com>
Date: Thu, 14 Sep 2023 17:55:47 -0700
Subject: [PATCH] Handle blank lines

---
 uniqt.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/uniqt.c b/uniqt.c
index 2b7d229..b755f4e 100644
--- a/uniqt.c
+++ b/uniqt.c
@@ -1,4 +1,4 @@
-#define _POSIX_C_SOURCE 199309L
+#define _POSIX_C_SOURCE 200809L
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -44,6 +44,8 @@ static char *read_line() {
   int newline = getchar();
   if (newline != EOF && newline != (int)'\n')
     die("Expected newline");
+  if (scanf_ret == 0 && newline == (int)'\n')
+    return strdup("\n");
   return line;
 }
 
-- 
2.44.1