From 5253f7c0214f598bdc8b96e0e90e9dd459a96b25 Mon Sep 17 00:00:00 2001
From: Jelle Zijlstra <jelle.zijlstra@gmail.com>
Date: Fri, 17 Dec 2021 15:04:05 -0800
Subject: [PATCH] curses.tigetstr() can return None (#11781)

Found by python/typeshed#6620
---
 mypy/util.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/mypy/util.py b/mypy/util.py
index b25f069d845d..533e9c6bee6e 100644
--- a/mypy/util.py
+++ b/mypy/util.py
@@ -566,11 +566,12 @@ def initialize_unix_colors(self) -> bool:
         under = curses.tigetstr('smul')
         set_color = curses.tigetstr('setaf')
         set_eseq = curses.tigetstr('cup')
+        normal = curses.tigetstr('sgr0')
 
-        if not (bold and under and set_color and set_eseq):
+        if not (bold and under and set_color and set_eseq and normal):
             return False
 
-        self.NORMAL = curses.tigetstr('sgr0').decode()
+        self.NORMAL = normal.decode()
         self.BOLD = bold.decode()
         self.UNDER = under.decode()
         self.DIM = parse_gray_color(set_eseq)