From c4593efbced8d1d5cae004975f6bd7b91904810c Mon Sep 17 00:00:00 2001
From: Jakob Kaivo <jkk@ung.org>
Date: Fri, 15 Mar 2019 12:35:38 -0400
Subject: don't crash on empty command lines

---
 interactive.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/interactive.c b/interactive.c
index 7460327..c429513 100644
--- a/interactive.c
+++ b/interactive.c
@@ -17,9 +17,12 @@
  *
  */
 
+#define _XOPEN_SOURCE 700
+
 #include "sh.h"
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
 static char *sh_getline(char **cmdline)
 {
@@ -42,6 +45,11 @@ int sh_interactive(void)
 			break;
 		}
 
+		if (!strcmp(cmdline, "\n")) {
+			free(cmdline);
+			continue;
+		}
+
 		struct command *command = sh_parse(cmdline);
 		while (command == NULL) {
 			/* append more text */
-- 
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