patch 9.1.1485: missing Wayland clipboard support

Problem:  missing Wayland clipboard support
Solution: make it work (Foxe Chen)

fixes: #5157
closes: #17097

Signed-off-by: Foxe Chen <chen.foxe@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index 492a444..4ea7a5c 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -1,4 +1,4 @@
-*eval.txt*	For Vim version 9.1.  Last change: 2025 Jun 04
+*eval.txt*	For Vim version 9.1.  Last change: 2025 Jun 27
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -2240,6 +2240,15 @@
 		The name of the character encoding of a file after conversion.
 		Only valid while evaluating the 'charconvert' option.
 
+					*v:clipmethod*
+v:clipmethod	The current method of accessing the clipboard that is being
+		used. Can either have the value of:
+			wayland		The Wayland protocol is being used.
+			x11		X11 selections are being used.
+			none		The above methods are unavailable
+					or cannot be used.
+		See 'clipmethod' for more details.
+
 					*v:cmdarg* *cmdarg-variable*
 v:cmdarg	This variable is used for two purposes:
 		1. The extra arguments given to a file read/write command.
@@ -2969,6 +2978,12 @@
 					*v:warningmsg* *warningmsg-variable*
 v:warningmsg	Last given warning message.  It's allowed to set this variable.
 
+					*v:wayland_display*
+v:wayland_display
+		The name of the Wayland display that Vim is connected to.
+		Equivalent to the $WAYLAND_DISPLAY environment variable.
+		If this is empty, then Vim is not connected to any display.
+
 					*v:windowid* *windowid-variable*
 v:windowid	When any X11/Wayland based GUI is running or when running in a
 		terminal and Vim connects to the X server (|-X|) this will be