From 68729fb975d38000d304e2db1eb121fb194a0e04 Mon Sep 17 00:00:00 2001
From: Jakub Wilk <jwilk@jwilk.net>
Date: Wed, 20 Nov 2019 11:34:03 +0100
Subject: [PATCH] Fix misplaced flags in re.sub() call

The 4th argument of re.sub() is maximum number of substitutions,
not flags.
---
 sphinx/util/smartypants.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sphinx/util/smartypants.py b/sphinx/util/smartypants.py
index 47f8b59b21..43f8bc7248 100644
--- a/sphinx/util/smartypants.py
+++ b/sphinx/util/smartypants.py
@@ -155,7 +155,7 @@ def educateQuotes(text: str, language: str = 'en') -> str:
 
     # Special case for decade abbreviations (the '80s):
     if language.startswith('en'):  # TODO similar cases in other languages?
-        text = re.sub(r"""'(?=\d{2}s)""", apostrophe, text, re.UNICODE)
+        text = re.sub(r"""'(?=\d{2}s)""", apostrophe, text, flags=re.UNICODE)
 
     close_class = r"""[^\ \t\r\n\[\{\(\-]"""
     dec_dashes = r"""&#8211;|&#8212;"""