Syntax highlight IDLE html doc code example. (GH-12981)
The new markup is currently ignored by IDLE's tk doc display.
(cherry picked from commit 55d035113dfb1bd90495c8571758f504ae8d4802)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
diff --git a/Doc/library/idle.rst b/Doc/library/idle.rst
index 11e137b..ad44911 100644
--- a/Doc/library/idle.rst
+++ b/Doc/library/idle.rst
@@ -724,11 +724,9 @@
characters cause following text to appear on a new line. Other control
characters are ignored or displayed as a space, box, or something else,
depending on the operating system and font. (Moving the text cursor through
-such output with arrow keys may exhibit some surprising spacing behavior.)
+such output with arrow keys may exhibit some surprising spacing behavior.) ::
-.. code-block:: none
-
- >>> s = 'a\tb\a<\x02><\r>\bc\nd'
+ >>> s = 'a\tb\a<\x02><\r>\bc\nd' # Enter 22 chars.
>>> len(s)
14
>>> s # Display repr(s)