gh-92822: IDLE - Add a selection label to window statusbars

Lib/idlelib/editor.py

@@ -421,6 +421,7 @@ def set_status_bar(self):
             # Insert some padding to avoid obscuring some of the statusbar
             # by the resize widget.
             self.status_bar.set_label('_padding1', '    ', side=RIGHT)
+        self.status_bar.set_label('selected', '', side=RIGHT)
         self.status_bar.set_label('column', 'Col: ?', side=RIGHT)
         self.status_bar.set_label('line', 'Ln: ?', side=RIGHT)
         self.status_bar.pack(side=BOTTOM, fill=X)
@@ -434,6 +435,11 @@ def set_line_and_column(self, event=None):
         line, column = self.text.index(INSERT).split('.')
         self.status_bar.set_label('column', 'Col: %s' % column)
         self.status_bar.set_label('line', 'Ln: %s' % line)
+
+        selected = len(self.text.get(SEL_FIRST, SEL_LAST))
+        self.status_bar.set_label('selected',
+                                f"({selected} selected)" if selected else '',
+                                side=RIGHT)
 
     menu_specs = [
         ("file", "_File"),

Misc/NEWS.d/next/IDLE/2022-05-15-17-46-13.gh-issue-92822.tjcUfw.rst

@@ -0,0 +1 @@
+Add "selected" label to the IDLE statusbar. Label is updated to show selected number of characters in the editor.