runtime(doc): document that :b cannot handle buffer names starting with "+"

closes: #17229

Signed-off-by: Christian Brabandt <cb@256bit.org>

diff --git a/runtime/doc/windows.txt b/runtime/doc/windows.txt
index db24e519160cd0dc6328bded900bbcbc59901cbf..545a44b3b211a87a3259ed7ff6f684c206572a8d 100644 (file)
--- a/runtime/doc/windows.txt
+++ b/runtime/doc/windows.txt
@@ -1,4 +1,4 @@
-*windows.txt*   For Vim version 9.1.  Last change: 2025 Jan 02
+*windows.txt*   For Vim version 9.1.  Last change: 2025 Apr 30
 
 
                  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -1289,7 +1289,9 @@ list of buffers. |unlisted-buffer|
                name also works, so long as it is unique in the list of
                buffers.
                Note that a buffer whose name is a number cannot be referenced
-               by that name; use the buffer number instead.
+               by that name; use the buffer number instead.  Same is true if
+               the buffer name starts with a `+`, it will be interpreted as
+               the start of a |+cmd|.
                Insert a backslash before a space in a buffer name.
                See |:buffer-!| for [!].
                This will also edit a buffer that is not in the buffer list,