patch 9.1.0507: hard to detect cursor movement in the command line

Problem:  hard to detect cursor movement in the command line
Solution: Add the CursorMovedC autocommand
          (Shougo Matsushita)

closes: #15040

Signed-off-by: Shougo Matsushita <Shougo.Matsu@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/autocmd.txt b/runtime/doc/autocmd.txt
index 037f89c..27ab2c7 100644
--- a/runtime/doc/autocmd.txt
+++ b/runtime/doc/autocmd.txt
@@ -1,4 +1,4 @@
-*autocmd.txt*   For Vim version 9.1.  Last change: 2024 May 05
+*autocmd.txt*   For Vim version 9.1.  Last change: 2024 Jun 20
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -379,6 +379,7 @@
 |CursorHold|		the user doesn't press a key for a while
 |CursorHoldI|		the user doesn't press a key for a while in Insert mode
 |CursorMoved|		the cursor was moved in Normal mode
+|CursorMovedC|		the cursor was moved in the |Command-line|
 |CursorMovedI|		the cursor was moved in Insert mode
 
 |WinNewPre|		before creating a new window
@@ -748,6 +749,13 @@
 				Careful: This is triggered very often, don't
 				do anything that the user does not expect or
 				that is slow.
+							*CursorMovedC*
+CursorMovedC			After the cursor was moved in the command
+				line. Be careful not to mess up the
+				command line, it may cause Vim to lock up.
+				<afile> is set to a single character,
+				indicating the type of command-line.
+				|cmdwin-char|
 							*CursorMovedI*
 CursorMovedI			After the cursor was moved in Insert mode.
 				Not triggered when the popup menu is visible.