gh-94521: IDLE: Auto-select and copy/cut current line if no selection on copy/cut

Doc/whatsnew/3.14.rst

@@ -319,6 +319,14 @@ http
   (Contributed by Yorik Hansen in :gh:`123430`.)
 
 
+idlelib and IDLE
+----------------
+
+* If no selection is made during copy/cut, the current line will
+  copy/cut automatically.
+  (Contributed by Jiahao Li in :gh:`94521`.)
+
+
 inspect
 -------
 

Lib/idlelib/News3.txt

@@ -1,6 +1,15 @@
+What's New in IDLE 3.14.0
+(since 3.13.0)
+Released on 2025-10-xx
+=========================
+
+
+gh-94521: If no selection is made during copy/cut, the current line
+will copy/cut automatically.
+
 What's New in IDLE 3.13.0
 (since 3.12.0)
-Released on 2024-10-xx
+Released on 2024-10-07
 =========================
 
 

Lib/idlelib/iomenu.py

@@ -33,6 +33,8 @@ def __init__(self, editwin):
                                             self.save_a_copy)
         self.fileencoding = 'utf-8'
         self.__id_print = self.text.bind("<<print-window>>", self.print_window)
+        self.__id_copy = self.text.bind("<<copy>>", self.copy)
+        self.__id_cut = self.text.bind("<<cut>>", self.cut)
 
     def close(self):
         # Undo command bindings
@@ -41,6 +43,8 @@ def close(self):
         self.text.unbind("<<save-window-as-file>>",self.__id_saveas)
         self.text.unbind("<<save-copy-of-window-as-file>>", self.__id_savecopy)
         self.text.unbind("<<print-window>>", self.__id_print)
+        self.text.unbind("<<copy>>", self.__id_copy)
+        self.text.unbind("<<cut>>", self.__id_cut)
         # Break cycles
         self.editwin = None
         self.text = None
@@ -348,6 +352,20 @@ def print_window(self, event):
             os.unlink(tempfilename)
         return "break"
 
+    def copy(self, event):
+        if not self.text.tag_ranges("sel"):
+            self.text.tag_add("sel", "insert linestart", "insert+1l linestart")
+            self.text.mark_set("insert", "insert linestart")
+        self.text.event_generate("<<Copy>>")
+        return "break"
+
+    def cut(self, event):
+        if not self.text.tag_ranges("sel"):
+            self.text.tag_add("sel", "insert linestart", "insert+1l linestart")
+            self.text.mark_set("insert", "insert linestart")
+        self.text.event_generate("<<Cut>>")
+        return "break"
+
     opendialog = None
     savedialog = None
 

Misc/NEWS.d/next/IDLE/2024-10-27-20-17-54.gh-issue-94521.XEFTrz.rst

@@ -0,0 +1,2 @@
+If no selection is made during copy/cut, the current line will copy/cut
+automatically.