Before, <return> would not, for instance, complete 're.c' to 're.compile' even with 'compile' highlighted. Now it does. Before, <return> was inserted into text, which in Shell meant compile() and possibly execute. Now cursor is left after completion.
The root problem was non-check for hide_event. When user clicks
on autocomplete window (acw), root widget gets focusOut event, then triggers hide_window to
close the acw. It should only be hide when acw is active, and acw didn't
get focus at FocusOut event (this event bind on acw and widget), or when
widget get a ButtonPress event (this event only bind on widget).
MacOS froze after double click on acw because when
doubleclick_event try to hide window at the end, hide_window function
destory whole acw, but tkinter didn't get focus back to widget. So set focus
on widget first, then destory acw.
Windows could not respond on double click event, because of the misbehavior
of Configure event. When acw was shown, tkinter called winconfig
event multiple times. That caused tkinter to not response to double
click event. When on Windows, unbind Configure event first
time get into winconfig_event to prevent multiple call of this event.
This follows the previous patch that changed idlelib file names.
Class names that matched old module names are not changed.
Change idlelib imports in turtledemo.__main__.
Exception: config-extensions.def. Previously, extension section
names, file names, and class names had to match. Changing section
names would create cross-version conflicts in config-extensions.cfg
(user customizations). Instead map old names to new file names
at point of import in editor.EditorWindow.load_extension.
Patch extensively tested with test_idle, idle_test.htest.py, a custom
import-all test, running IDLE in a console to catch messages,
and testing each menu item. Based on a patch by Al Sweigart.
Terry Jan Reedy
mlouielu