From dd74369cb7b230b07ac3a031563406c8f2aae17f Mon Sep 17 00:00:00 2001
From: Tal Einat <taleinat+github@gmail.com>
Date: Thu, 2 Aug 2018 10:30:06 +0300
Subject: [PATCH] bpo-34120: fix text viewer to call grab_release() only when
 needed (GH-8616)

---
 Lib/idlelib/textview.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Lib/idlelib/textview.py b/Lib/idlelib/textview.py
index e78e297ab99..75b24703b4c 100644
--- a/Lib/idlelib/textview.py
+++ b/Lib/idlelib/textview.py
@@ -83,7 +83,8 @@ class ViewWindow(Toplevel):
                                             command=self.ok, takefocus=False)
         self.viewframe.pack(side='top', expand=True, fill='both')
 
-        if modal:
+        self.is_modal = modal
+        if self.is_modal:
             self.transient(parent)
             self.grab_set()
             if not _utest:
@@ -91,7 +92,8 @@ class ViewWindow(Toplevel):
 
     def ok(self, event=None):
         """Dismiss text viewer dialog."""
-        self.grab_release()
+        if self.is_modal:
+            self.grab_release()
         self.destroy()