From 4ca060d8ad7c6df1fd4df30f9a14f6aa35380c09 Mon Sep 17 00:00:00 2001
From: Terry Jan Reedy <tjreedy@udel.edu>
Date: Sun, 8 Mar 2020 15:30:04 -0400
Subject: [PATCH]  bpo-39885: IDLE context menu clears selection  (#18859)

Since clicking to get an IDLE context menu moves the cursor,
any text selection should be and now is cleared.
---
 Lib/idlelib/NEWS.txt                                           | 3 +++
 Lib/idlelib/editor.py                                          | 1 +
 Misc/NEWS.d/next/IDLE/2020-03-08-14-27-36.bpo-39885.29ERiR.rst | 2 ++
 3 files changed, 6 insertions(+)
 create mode 100644 Misc/NEWS.d/next/IDLE/2020-03-08-14-27-36.bpo-39885.29ERiR.rst

diff --git a/Lib/idlelib/NEWS.txt b/Lib/idlelib/NEWS.txt
index 1e6cd4580ea..b88b1e3cbff 100644
--- a/Lib/idlelib/NEWS.txt
+++ b/Lib/idlelib/NEWS.txt
@@ -3,6 +3,9 @@ Released on 2020-10-05?
 ======================================
 
 
+bpo-39885: Since clicking to get an IDLE context menu moves the
+cursor, any text selection should be and now is cleared.
+
 bpo-39852: Edit "Go to line" now clears any selection, preventing
 accidental deletion.  It also updates Ln and Col on the status bar.
 
diff --git a/Lib/idlelib/editor.py b/Lib/idlelib/editor.py
index 5b81b52f919..51941900d5c 100644
--- a/Lib/idlelib/editor.py
+++ b/Lib/idlelib/editor.py
@@ -499,6 +499,7 @@ class EditorWindow(object):
     rmenu = None
 
     def right_menu_event(self, event):
+        self.text.tag_remove("sel", "1.0", "end")
         self.text.mark_set("insert", "@%d,%d" % (event.x, event.y))
         if not self.rmenu:
             self.make_rmenu()
diff --git a/Misc/NEWS.d/next/IDLE/2020-03-08-14-27-36.bpo-39885.29ERiR.rst b/Misc/NEWS.d/next/IDLE/2020-03-08-14-27-36.bpo-39885.29ERiR.rst
new file mode 100644
index 00000000000..f0f434ad3c1
--- /dev/null
+++ b/Misc/NEWS.d/next/IDLE/2020-03-08-14-27-36.bpo-39885.29ERiR.rst
@@ -0,0 +1,2 @@
+Since clicking to get an IDLE context menu moves the cursor,
+any text selection should be and now is cleared.