From 2522db11df102be3baf25ce9e816ebe8ffdb7fcc Mon Sep 17 00:00:00 2001
From: Terry Jan Reedy
Date: Sun, 8 Mar 2020 14:32:42 -0400
Subject: [PATCH] bpo-39852: IDLE 'Go to line' deletes selection, updates
status (GH-18801)
It appears standard that moving the text insert cursor away from a selection clears the
selection. Clearing prevents accidental deletion of a possibly off-screen bit of text.
The update is for Ln and Col on the status bar.
---
Doc/library/idle.rst | 4 ++-
Lib/idlelib/NEWS.txt | 3 ++
Lib/idlelib/editor.py | 5 ++-
Lib/idlelib/help.html | 33 +++++++++++--------
.../2020-03-06-01-55-14.bpo-39852.QjA1qF.rst | 2 ++
5 files changed, 31 insertions(+), 16 deletions(-)
create mode 100644 Misc/NEWS.d/next/IDLE/2020-03-06-01-55-14.bpo-39852.QjA1qF.rst
diff --git a/Doc/library/idle.rst b/Doc/library/idle.rst
index fd6e309567d..b1192e7bb46 100644
--- a/Doc/library/idle.rst
+++ b/Doc/library/idle.rst
@@ -142,7 +142,9 @@ Replace...
Open a search-and-replace dialog.
Go to Line
- Move cursor to the line number requested and make that line visible.
+ Move the cursor to the beginning of the line requested and make that
+ line visible. A request past the end of the file goes to the end.
+ Clear any selection and update the line and column status.
Show Completions
Open a scrollable list allowing selection of keywords and attributes. See
diff --git a/Lib/idlelib/NEWS.txt b/Lib/idlelib/NEWS.txt
index 0651b3d68dc..1e6cd4580ea 100644
--- a/Lib/idlelib/NEWS.txt
+++ b/Lib/idlelib/NEWS.txt
@@ -3,6 +3,9 @@ Released on 2020-10-05?
======================================
+bpo-39852: Edit "Go to line" now clears any selection, preventing
+accidental deletion. It also updates Ln and Col on the status bar.
+
bpo-39781: Selecting code context lines no longer causes a jump.
bpo-39663: Add tests for pyparse find_good_parse_start().
diff --git a/Lib/idlelib/editor.py b/Lib/idlelib/editor.py
index 04c786dc523..5b81b52f919 100644
--- a/Lib/idlelib/editor.py
+++ b/Lib/idlelib/editor.py
@@ -678,8 +678,11 @@ class EditorWindow(object):
if lineno <= 0:
text.bell()
return "break"
- text.mark_set("insert", "%d.0" % lineno)
+
+ text.tag_remove("sel", "1.0", "end")
+ text.mark_set("insert", f'{lineno}.0')
text.see("insert")
+ self.set_line_and_column()
return "break"
def open_module(self):
diff --git a/Lib/idlelib/help.html b/Lib/idlelib/help.html
index 0b2bdd2e174..424c6b50f33 100644
--- a/Lib/idlelib/help.html
+++ b/Lib/idlelib/help.html
@@ -4,7 +4,7 @@
- IDLE — Python 3.9.0a1 documentation
+ IDLE — Python 3.9.0a4 documentation
@@ -17,7 +17,7 @@
@@ -71,7 +71,7 @@
Move cursor to the line number requested and make that line visible.
+
Go to Line
Move the cursor to the beginning of the line requested and make that
+line visible. A request past the end of the file goes to the end.
+Clear any selection and update the line and column status.
Show Completions
Open a scrollable list allowing selection of keywords and attributes. See
Completions in the Editing and navigation section below.
@@ -635,17 +637,20 @@ clash, or a single installation might need admin access. If one undo the
clash, or cannot or does not want to run as admin, it might be easiest to
completely remove Python and start over.
A zombie pythonw.exe process could be a problem. On Windows, use Task
-Manager to detect and stop one. Sometimes a restart initiated by a program
-crash or Keyboard Interrupt (control-C) may fail to connect. Dismissing
-the error box or Restart Shell on the Shell menu may fix a temporary problem.
+Manager to check for one and stop it if there is. Sometimes a restart
+initiated by a program crash or Keyboard Interrupt (control-C) may fail
+to connect. Dismissing the error box or using Restart Shell on the Shell
+menu may fix a temporary problem.
When IDLE first starts, it attempts to read user configuration files in
~/.idlerc/ (~ is one’s home directory). If there is a problem, an error
message should be displayed. Leaving aside random disk glitches, this can
-be prevented by never editing the files by hand, using the configuration
-dialog, under Options, instead Options. Once it happens, the solution may
-be to delete one or more of the configuration files.
+be prevented by never editing the files by hand. Instead, use the
+configuration dialog, under Options. Once there is an error in a user
+configuration file, the best solution may be to delete it and start over
+with the settings dialog.
If IDLE quits with no message, and it was not started from a console, try
-starting from a console (python-midlelib) and see if a message appears.
+starting it from a console or terminal (python-midlelib) and see if
+this results in an error message.