(Text Terminal Colors): Remove the documentation of tty-display-color-p.

Suggest to avoid the use of tty-display-color-cells.

diff --git a/lispref/frames.texi b/lispref/frames.texi
index adae8efe7320d94911bb56b3edb0471464863f7c..69f39ac409c4afd3936eefc59fb640155d1a4bb8 100644 (file)
--- a/lispref/frames.texi
+++ b/lispref/frames.texi
@@ -1575,15 +1575,12 @@ will specify which terminal to operate on (the default being the
 selected frame's terminal; @pxref{Input Focus}).  At present, though,
 the @var{display} argument has no effect.
 
-@defun tty-display-color-p &optional display
-This function returns non-@code{nil} if the terminal on @var{display}
-supports colors.
-@end defun
-
 @defun tty-display-color-cells &optional display
 This function returns the number of distinct colors supported for
-@var{display}.  For a monochrome terminal which only supports two
-colors (usually black and white), this function returns zero.
+@var{display}.  For a monochrome terminal which only supports two colors
+(usually black and white), this function returns zero.  (Lisp programs
+should avoid use of this function; instead, use the display-independent
+@code{display-color-cells}, described in @ref{Display Feature Testing}.)
 @end defun
 
 @defun tty-color-define name number &optional rgb display