From 7eeb479705e9d30612b3b7bc08486858a857977a Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Tue, 28 May 2019 18:30:30 +0000
Subject: Do not read past the end of the argument string if it is empty.

---
 arguments.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arguments.c b/arguments.c
index 829a5ef3..38e50829 100644
--- a/arguments.c
+++ b/arguments.c
@@ -210,6 +210,8 @@ args_escape(const char *s)
 	char			*escaped, *result;
 	int			 flags;
 
+	if (*s == '\0')
+		return (xstrdup(s));
 	if ((strchr(quoted, s[0]) != NULL || s[0] == '~') && s[1] == '\0') {
 		xasprintf(&escaped, "\\%c", s[0]);
 		return (escaped);
-- 
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