@@ -3,6 +3,8 @@ What's New in IDLE 3.15.0
 Released on 2026-10-01
 =========================
 
+gh-94521: If no selection is made during copy/cut, the current line
+will copy/cut automatically.
 
 gh-152745:  When "Run... Customized" with "Restart shell" unchecked
 while Shell is running code, including waiting for an input('prompt:')

@@ -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
@@ -375,6 +379,20 @@ 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
 

diff --git a/Misc/NEWS.d/next/IDLE/2024-10-27-20-17-54.gh-issue-94521.XEFTrz.rst b/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.
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,2 @@
		If no selection is made during copy/cut, the current line will copy/cut
		automatically.