Mark Emacs 20 color support compat aliases obsolete

* lisp/faces.el (x-defined-colors, x-color-defined-p)
(x-color-values, x-display-color-p): Make Emacs 20 compat aliases
obsolete.  Update one caller to use the new names.
* doc/lispref/frames.texi (Color Names): Do not document above
obsolete aliases.

doc/lispref/frames.texi

@@ -4461,20 +4461,12 @@ really supports that color.  When using X, you can ask for any defined
 color on any kind of display, and you will get some result---typically,
 the closest it can do.  To determine whether a frame can really display
 a certain color, use @code{color-supported-p} (see below).
-
-@findex x-color-defined-p
-This function used to be called @code{x-color-defined-p},
-and that name is still supported as an alias.
 @end defun
 
 @defun defined-colors &optional frame
 This function returns a list of the color names that are defined
 and supported on frame @var{frame} (default, the selected frame).
 If @var{frame} does not support colors, the value is @code{nil}.
-
-@findex x-defined-colors
-This function used to be called @code{x-defined-colors},
-and that name is still supported as an alias.
 @end defun
 
 @defun color-supported-p color &optional frame background-p
@@ -4526,10 +4518,6 @@ The color values are returned for @var{frame}'s display.  If
 @var{frame} is omitted or @code{nil}, the information is returned for
 the selected frame's display.  If the frame cannot display colors, the
 value is @code{nil}.
-
-@findex x-color-values
-This function used to be called @code{x-color-values},
-and that name is still supported as an alias.
 @end defun
 
 @defun color-name-to-rgb color &optional frame
@@ -4714,10 +4702,7 @@ This function returns @code{t} if @var{display} has a mouse available,
 @end defun
 
 @defun display-color-p &optional display
-@findex x-display-color-p
 This function returns @code{t} if the screen is a color screen.
-It used to be called @code{x-display-color-p}, and that name
-is still supported as an alias.
 @end defun
 
 @defun display-grayscale-p &optional display

etc/NEWS

@@ -701,6 +701,11 @@ Instead, the Lisp reader approximates an infinity with the nearest
 finite value, and a NaN with some other non-numeric object that
 provokes an error if used numerically.
 
++++
+** X color support compatibility aliases are now marked obsolete.
+The compatibility aliases 'x-defined-colors', 'x-color-defined-p',
+'x-color-values', and 'x-display-color-p' are now obsolete.
+
 
 * Lisp Changes in Emacs 30.1
 

lisp/emulation/viper-cmd.el

@@ -4724,15 +4724,15 @@ Please, specify your level now: "))
 (defun viper-submit-report ()
   "Submit bug report on Viper."
   (interactive)
-  (defvar x-display-color-p)
+  (defvar display-color-p)
   (defvar viper-frame-parameters)
   (defvar viper-minibuffer-emacs-face)
   (defvar viper-minibuffer-vi-face)
   (defvar viper-minibuffer-insert-face)
   (let ((reporter-prompt-for-summary-p t)
-        (x-display-color-p (if (viper-window-display-p)
-                              (x-display-color-p)
-                             'non-x))
+        (display-color-p (if (viper-window-display-p)
+                             (display-color-p)
+                           'non-x))
         (viper-frame-parameters (frame-parameters (selected-frame)))
 	(viper-minibuffer-emacs-face (if (viper-has-face-support-p)
                                          (facep
@@ -4790,7 +4790,7 @@ Please, specify your level now: "))
 		        'viper-expert-level
 		        'major-mode
 		        'window-system
-                        'x-display-color-p
+                        'display-color-p
 			'viper-frame-parameters
 			'viper-minibuffer-vi-face
 			'viper-minibuffer-insert-face

lisp/faces.el

@@ -1850,7 +1850,6 @@ If there is neither a user setting nor a default for FACE, return nil."
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;; Frame-type independent color support.
-;;; We keep the old x-* names as aliases for back-compatibility.
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
 (defun defined-colors (&optional frame)
@@ -1862,7 +1861,6 @@ If FRAME is nil, that stands for the selected frame."
   (if (display-graphic-p frame)
       (xw-defined-colors frame)
     (mapcar 'car (tty-color-alist frame))))
-(defalias 'x-defined-colors 'defined-colors)
 
 (defun defined-colors-with-face-attributes (&optional frame foreground)
   "Return a list of colors supported for a particular FRAME.
@@ -1946,7 +1944,6 @@ If FRAME is omitted or nil, use the selected frame."
     (if (display-graphic-p frame)
 	(xw-color-defined-p color frame)
       (numberp (tty-color-translate color frame)))))
-(defalias 'x-color-defined-p 'color-defined-p)
 
 (declare-function xw-color-values "xfns.c" (color &optional frame))
 
@@ -1974,8 +1971,6 @@ return value is nil."
    (t
     (tty-color-values color frame))))
 
-(defalias 'x-color-values 'color-values)
-
 (declare-function xw-display-color-p "xfns.c" (&optional terminal))
 
 (defun display-color-p (&optional display)
@@ -1986,7 +1981,6 @@ If omitted or nil, that stands for the selected frame's display."
   (if (display-graphic-p display)
       (xw-display-color-p display)
     (tty-display-color-p display)))
-(defalias 'x-display-color-p 'display-color-p)
 
 (declare-function x-display-grayscale-p "xfns.c" (&optional terminal))
 
@@ -3221,6 +3215,10 @@ also the same size as FACE on FRAME, or fail."
 
 (define-obsolete-function-alias 'face-background-pixmap #'face-stipple "29.1")
 (define-obsolete-function-alias 'set-face-background-pixmap #'set-face-stipple "29.1")
+(define-obsolete-function-alias 'x-defined-colors #'defined-colors "30.1")
+(define-obsolete-function-alias 'x-color-defined-p #'color-defined-p "30.1")
+(define-obsolete-function-alias 'x-color-values #'color-values "30.1")
+(define-obsolete-function-alias 'x-display-color-p #'display-color-p "30.1")
 
 (provide 'faces)