From 43ed5a384531400083a06dbb5929eafb621610bd Mon Sep 17 00:00:00 2001
From: Aleksey Veresov <aleksey@veresov.pro>
Date: Sun, 25 Oct 2020 07:20:36 +0300
Subject: Empty input fix.

---
 cryptrobber.sts | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/cryptrobber.sts b/cryptrobber.sts
index 22cb06d..2668b52 100644
--- a/cryptrobber.sts
+++ b/cryptrobber.sts
@@ -124,6 +124,15 @@ set_entry float_init ; this is program with floats
         swap 1 +
     od drop as length
     local ciphertext
+    length 0 = if
+        'e' sys_write_err
+        'm' sys_write_err
+        'p' sys_write_err
+        't' sys_write_err
+        'y' sys_write_err
+        newline sys_write_err
+        sys_exit
+    fi
 
     0 ; initial key is empty
     do
-- 
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