Document the x-stretch-cursor variable.

diff --git a/man/frames.texi b/man/frames.texi
index 06c2481a9fa37bb0fd7aef594bc075aa1cb7bc6c..2db600d31dec6b3f46e5436f5c1bb480b64cfe78 100644 (file)
--- a/man/frames.texi
+++ b/man/frames.texi
@@ -1316,6 +1316,13 @@ You can also control the amount of time Emacs is busy before the
 busy-cursor is displayed, by customizing the value of the variable
 @code{busy-cursor-delay}.
 
+@vindex x-stretch-cursor
+@cindex wide block cursor
+  Emacs on X can draw the block cursor as wide as the glyph under the
+cursor.  For example, if the cursor is on a TAB character, it is drawn
+as wide as that TAB is on the display.  To turn on this feature, set the
+variable @code{x-stretch-cursor} to a non-nil value.
+
 @node Non-Window Terminals
 @section Non-Window Terminals
 @cindex non-window terminals