Terry J. Reedy added the comment:
Thank you David, that does help. Your comment emphasizes that on other systems
and many other X-11 apps, the user already chooses 'replace' versus 'insert' by
selecting a replacement or not. I presume the 'selection buffer' you refer to
is different from the 'clipboard' (or whatever linux calls it). Otherwise,
Roger's patch would not work and I assume he tested it.
Simply applying Roger's patch, in 3.6, would be **MUCH** easier than adding a
new option. I could even add a line to the sign-on message: "Paste now
replaces selected text. Use undo to correct mistakes."
Assuming the patch does work, here is a workaround for releases that lack it.
Create in Lib/idlelib a file called, for instance @MYPATCHES.txt and insert
with the following, to remind what to do after upgrading to a new bugfix
release.
---
To make paste replace selection, insert the following 3 lines at the top (after
the def line) of EditorWindow.paste, about line 600, in file EditorWindow.py
(3.5 and before) or editor.py (3.6 and after).
sel = self.text.tag_ranges("sel")
if sel:
self.text.delete(*sel) # issue5124
---
Save and then follow the instruction to patch the editor file. If doing the
edit in IDLE, hit F5 to test the patched EditorWindow.
----------
versions: +Python 3.5, Python 3.6 -Python 3.3, Python 3.4
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<http://bugs.python.org/issue5124>
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