Fixed unescape_string_literal() crash on empty strings.

1 files changed, 1 insertions, 1 deletions

diff --git a/django/utils/text.py b/django/utils/text.py
index 3e4199a1d9..fa337650af 100644
--- a/django/utils/text.py
+++ b/django/utils/text.py
@@ -375,7 +375,7 @@ def unescape_string_literal(s):
         >>> unescape_string_literal("'\'ab\' c'")
         "'ab' c"
     """
-    if s[0] not in "\"'" or s[-1] != s[0]:
+    if not s or s[0] not in "\"'" or s[-1] != s[0]:
         raise ValueError("Not a string literal: %r" % s)
     quote = s[0]
     return s[1:-1].replace(r'\%s' % quote, quote).replace(r'\\', '\\')