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master 7dab52dfbc: Minor cleanups in ediff-*.el


From: Stefan Kangas
Subject: master 7dab52dfbc: Minor cleanups in ediff-*.el
Date: Sun, 7 Aug 2022 13:21:36 -0400 (EDT)

branch: master
commit 7dab52dfbce9c39a77524376a53e8d65b3e470a3
Author: Stefan Kangas <stefan@marxist.se>
Commit: Stefan Kangas <stefan@marxist.se>

    Minor cleanups in ediff-*.el
    
    * lisp/vc/ediff-init.el (ediff-window-visible-p):
    (ediff-nonempty-string-p): Simplify.
    (stipple-pixmap): Don't try XEmacs specific(?) variable.
    (ediff-frame-unsplittable-p): Make obsolete.  Update callers.
    (ediff-has-gutter-support-p): Redefine as obsolete function alias for
    'ignore'.
    (ediff-mouse-event-p): Redefine as obsolete function alias for
    'mouse-event-p'.  Update callers.
    * lisp/vc/ediff-util.el (ediff-submit-report): Simplify.
    (ediff-filename-magic-p): Make obsolete.  Update callers.
    (ediff-activate-mark): Make obsolete.  Update callers.
    * lisp/vc/ediff-help.el:
    * lisp/vc/ediff-hook.el:
    * lisp/vc/ediff-util.el:
    * lisp/vc/ediff-wind.el: Remove superfluous defvars.
---
 lisp/vc/ediff-help.el |  4 ----
 lisp/vc/ediff-hook.el |  8 -------
 lisp/vc/ediff-init.el | 64 ++++++++++++++-------------------------------------
 lisp/vc/ediff-ptch.el |  2 --
 lisp/vc/ediff-util.el | 51 ++++++++--------------------------------
 lisp/vc/ediff-wind.el | 24 +++++--------------
 lisp/vc/ediff.el      |  5 ++--
 7 files changed, 35 insertions(+), 123 deletions(-)

diff --git a/lisp/vc/ediff-help.el b/lisp/vc/ediff-help.el
index 42fbde2165..e2d93d2b31 100644
--- a/lisp/vc/ediff-help.el
+++ b/lisp/vc/ediff-help.el
@@ -24,10 +24,6 @@
 
 ;;; Code:
 
-;; Compiler pacifier start
-(defvar ediff-multiframe)
-;; end pacifier
-
 (require 'ediff-init)
 (defvar ediff-multiframe)
 
diff --git a/lisp/vc/ediff-hook.el b/lisp/vc/ediff-hook.el
index 0160d9f684..d1eff0151a 100644
--- a/lisp/vc/ediff-hook.el
+++ b/lisp/vc/ediff-hook.el
@@ -35,16 +35,8 @@
 ;;      (define-key menu-bar-tools-menu [ediff]
 ;;     '("Compare" . menu-bar-ediff-menu))
 
-;; Compiler pacifier
-(defvar ediff-menu)
-(defvar ediff-merge-menu)
-(defvar epatch-menu)
-(defvar ediff-misc-menu)
-;; end pacifier
-
 ;; allow menus to be set up without ediff-wind.el being loaded
 
-;; Emacs
 ;; initialize menu bar keymaps
 (defvar menu-bar-ediff-misc-menu
   (make-sparse-keymap "Ediff Miscellanea"))
diff --git a/lisp/vc/ediff-init.el b/lisp/vc/ediff-init.el
index 29f24436e1..a3e77200dd 100644
--- a/lisp/vc/ediff-init.el
+++ b/lisp/vc/ediff-init.el
@@ -27,17 +27,13 @@
 (require 'cl-lib)
 (require 'ediff-util)
 
-;; Start compiler pacifier
 (defvar ediff-metajob-name)
 (defvar ediff-meta-buffer)
 (defvar ediff-grab-mouse)
 (defvar ediff-mouse-pixel-position)
 (defvar ediff-mouse-pixel-threshold)
-(defvar ediff-whitespace)
 (defvar ediff-multiframe)
 (defvar ediff-use-toolbar-p)
-(defvar mswindowsx-bitmap-file-path)
-;; end pacifier
 
 (defvar ediff-force-faces nil
   "If t, Ediff will think that it is running on a display that supports faces.
@@ -59,11 +55,6 @@ that Ediff doesn't know about.")
 (defun ediff-has-toolbar-support-p ()
   nil)
 
-
-(defun ediff-has-gutter-support-p ()
-  (declare (obsolete nil "27.1"))
-  nil)
-
 (defun ediff-use-toolbar-p ()
   (and (ediff-has-toolbar-support-p)   ;Can it do it ?
        (boundp 'ediff-use-toolbar-p)
@@ -717,18 +708,6 @@ Ediff needs to find fine differences."
   :type 'symbol
   :group 'ediff)
 
-
-(define-obsolete-function-alias 'ediff-read-event #'read-event "27.1")
-
-(define-obsolete-function-alias 'ediff-overlayp #'overlayp "27.1")
-
-(define-obsolete-function-alias 'ediff-make-overlay #'make-overlay "27.1")
-
-(define-obsolete-function-alias 'ediff-delete-overlay #'delete-overlay "27.1")
-
-(define-obsolete-function-alias 'ediff-color-display-p #'display-color-p 
"27.1")
-
-
 ;; A var local to each control panel buffer.  Indicates highlighting style
 ;; in effect for this buffer: `face', `ascii',
 ;; `off' -- turned off (on a dumb terminal only).
@@ -967,8 +946,6 @@ this variable represents.")
   (cond ((not (ediff-has-face-support-p)) nil)
        ((and (boundp 'x-bitmap-file-path)
              (locate-library "stipple" t x-bitmap-file-path)) "stipple")
-       ((and (boundp 'mswindowsx-bitmap-file-path)
-             (locate-library "stipple" t mswindowsx-bitmap-file-path)) 
"stipple")
        (t "Stipple")))
 
 (defface ediff-even-diff-A
@@ -1275,6 +1252,7 @@ This default should work without changes."
 
 
 (defsubst ediff-frame-unsplittable-p (frame)
+  (declare (obsolete nil "29.1"))
   (cdr (assq 'unsplittable (frame-parameters frame))))
 
 (defsubst ediff-get-next-window (wind prev-wind)
@@ -1349,29 +1327,23 @@ This default should work without changes."
       (ediff-clear-fine-differences-in-one-buffer n 'C)))
 
 
-(defsubst ediff-mouse-event-p (event)
-  (string-match "mouse" (format "%S" (event-basic-type event))))
-
-
 (defsubst ediff-key-press-event-p (event)
   (or (char-or-string-p event) (symbolp event)))
 
 (defun ediff-event-point (event)
-  (cond ((ediff-mouse-event-p event)
+  (cond ((mouse-event-p event)
         (posn-point (event-start event)))
        ((ediff-key-press-event-p event)
         (point))
        (t (error "Error"))))
 
 (defun ediff-event-buffer (event)
-  (cond ((ediff-mouse-event-p event)
+  (cond ((mouse-event-p event)
         (window-buffer (posn-window (event-start event))))
        ((ediff-key-press-event-p event)
         (current-buffer))
        (t (error "Error"))))
 
-(define-obsolete-function-alias 'ediff-event-key #'identity "27.1")
-
 (defun ediff-last-command-char ()
   (declare (obsolete last-command-event "27.1"))
   last-command-event)
@@ -1383,14 +1355,8 @@ This default should work without changes."
        (eq (frame-visible-p frame) 'icon)))
 
 (defsubst ediff-window-visible-p (wind)
-  ;; under TTY, window-live-p also means window is visible
   (and (window-live-p wind)
-       (or (not (display-graphic-p))
-          (frame-visible-p (window-frame wind)))))
-
-
-(define-obsolete-function-alias 'ediff-frame-char-width
-  #'frame-char-width "27.1")
+       (frame-visible-p (window-frame wind))))
 
 (defun ediff-reset-mouse (&optional frame do-not-grab-mouse)
   (or frame (setq frame (selected-frame)))
@@ -1433,8 +1399,6 @@ This default should work without changes."
                             ediff-mouse-pixel-threshold))))
               (t nil)))))
 
-(define-obsolete-function-alias 'ediff-frame-char-height
-  #'frame-char-height "27.1")
 
 ;; Some overlay functions
 
@@ -1449,12 +1413,6 @@ This default should work without changes."
 (defsubst ediff-empty-overlay-p (overl)
   (= (ediff-overlay-start overl) (ediff-overlay-end overl)))
 
-(define-obsolete-function-alias 'ediff-overlay-buffer
-  #'overlay-buffer "27.1")
-
-(define-obsolete-function-alias 'ediff-overlay-get #'overlay-get "27.1")
-
-
 (defun ediff-move-overlay (overlay beg end &optional buffer)
   "If OVERLAY's buffer exists, call `move-overlay'."
   (let ((buf (and overlay (overlay-buffer overlay))))
@@ -1493,7 +1451,7 @@ This default should work without changes."
     (ediff-abbreviate-file-name (file-name-directory dir))))
 
 (defsubst ediff-nonempty-string-p (string)
-  (and (stringp string) (not (string= string ""))))
+  (and (stringp string) (string-empty-p string)))
 
 (defun ediff-abbrev-jobname (jobname)
   (cond ((eq jobname 'ediff-directories)
@@ -1554,11 +1512,23 @@ This default should work without changes."
   (ediff-file-attributes filename 5))
 
 
+(define-obsolete-function-alias 'ediff-has-gutter-support-p #'ignore "27.1")
+(define-obsolete-function-alias 'ediff-event-key #'identity "27.1")
+(define-obsolete-function-alias 'ediff-frame-char-width #'frame-char-width 
"27.1")
+(define-obsolete-function-alias 'ediff-frame-char-height #'frame-char-height 
"27.1")
+(define-obsolete-function-alias 'ediff-overlay-buffer #'overlay-buffer "27.1")
+(define-obsolete-function-alias 'ediff-overlay-get #'overlay-get "27.1")
+(define-obsolete-function-alias 'ediff-read-event #'read-event "27.1")
+(define-obsolete-function-alias 'ediff-overlayp #'overlayp "27.1")
+(define-obsolete-function-alias 'ediff-make-overlay #'make-overlay "27.1")
+(define-obsolete-function-alias 'ediff-delete-overlay #'delete-overlay "27.1")
+(define-obsolete-function-alias 'ediff-color-display-p #'display-color-p 
"27.1")
 (define-obsolete-function-alias 'ediff-with-syntax-table #'with-syntax-table 
"27.1")
 (define-obsolete-function-alias 'ediff-convert-standard-filename 
#'convert-standard-filename "28.1")
 (define-obsolete-function-alias 'ediff-hide-face #'ignore "28.1")
 (define-obsolete-function-alias 'ediff-file-remote-p #'file-remote-p "29.1")
 (define-obsolete-function-alias 'ediff-window-display-p #'display-graphic-p 
"29.1")
+(define-obsolete-function-alias 'ediff-mouse-event-p #'mouse-event-p "29.1")
 
 (provide 'ediff-init)
 ;;; ediff-init.el ends here
diff --git a/lisp/vc/ediff-ptch.el b/lisp/vc/ediff-ptch.el
index 94a890d95d..4d471e21b4 100644
--- a/lisp/vc/ediff-ptch.el
+++ b/lisp/vc/ediff-ptch.el
@@ -24,10 +24,8 @@
 
 ;;; Code:
 
-
 (require 'diff-mode) ; For `diff-file-junk-re'.
 
-
 (defgroup ediff-ptch nil
   "Ediff patch support."
   :tag "Patch"
diff --git a/lisp/vc/ediff-util.el b/lisp/vc/ediff-util.el
index e8510acfb1..0d96a195ad 100644
--- a/lisp/vc/ediff-util.el
+++ b/lisp/vc/ediff-util.el
@@ -24,24 +24,11 @@
 
 ;;; Code:
 
-
 (provide 'ediff-util)    ;FIXME: Break cyclic dependencies and move to the end!
 
-;; Compiler pacifier
 (defvar ediff-use-toolbar-p)
-(defvar ediff-toolbar-height)
-(defvar ediff-toolbar)
-(defvar ediff-toolbar-3way)
-(defvar bottom-toolbar)
-(defvar bottom-toolbar-visible-p)
-(defvar bottom-toolbar-height)
-(defvar mark-active)
-
 (defvar ediff-after-quit-hook-internal nil)
 
-;; end pacifier
-
-
 (require 'ediff-init)
 (require 'ediff-help)
 (require 'ediff-mult)
@@ -1337,10 +1324,6 @@ To change the default, set the variable 
`ediff-use-toolbar-p', which see."
        (if (ediff-in-control-buffer-p)
            (ediff-recenter 'no-rehighlight)))))
 
-
-(define-obsolete-function-alias 'ediff-kill-bottom-toolbar #'ignore "27.1")
-(define-obsolete-function-alias 'ediff-make-bottom-toolbar #'ignore "27.1")
-
 ;; Merging
 
 (defun ediff-toggle-show-clashes-only ()
@@ -3082,10 +3065,6 @@ Hit \\[ediff-recenter] to reset the windows afterward."
   )
 
 
-;; for compatibility
-(define-obsolete-function-alias 'ediff-minibuffer-with-setup-hook
-  #'minibuffer-with-setup-hook "28.1")
-
 ;; This is adapted from a similar function in `emerge.el'.
 ;; PROMPT should not have a trailing ': ', so that it can be modified
 ;; according to context.
@@ -3202,16 +3181,6 @@ Hit \\[ediff-recenter] to reset the windows afterward."
     file))
 
 
-;; Quote metacharacters (using \) when executing diff in Unix.
-;;(defun ediff-protect-metachars (str)
-;;  (let ((limit 0))
-;;    (while (string-match ediff-metachars str limit)
-;;      (setq str (concat (substring str 0 (match-beginning 0))
-;;                     "\\"
-;;                     (substring str (match-beginning 0))))
-;;      (setq limit (1+ (match-end 0)))))
-;;  str)
-
 ;; Make sure the current buffer (for a file) has the same contents as the
 ;; file on disk, and attempt to remedy the situation if not.
 ;; Signal an error if we can't make them the same, or the user doesn't want
@@ -3272,6 +3241,7 @@ Hit \\[ediff-recenter] to reset the windows afterward."
 
 
 (defun ediff-filename-magic-p (file)
+  (declare (obsolete nil "29.1"))
   (or (ediff-file-compressed-p file)
       (file-remote-p file)))
 
@@ -3320,7 +3290,8 @@ Without an argument, it saves customized diff argument, 
if available
     (select-window wind)
     (delete-other-windows)
     (or (mark) (push-mark))
-    (ediff-activate-mark)
+    (setq mark-active 'ediff-util)
+    (setq-local transient-mark-mode t)
     (split-window-vertically)
     (ediff-select-lowest-window)
     (setq other-wind (selected-window))
@@ -3899,11 +3870,9 @@ Ediff Control Panel to restore highlighting."
   "Submit bug report on Ediff."
   (interactive)
   (ediff-barf-if-not-control-buffer)
-  (defvar ediff-device-type)
   (defvar ediff-buffer-name)
   (let ((reporter-prompt-for-summary-p t)
        (ctl-buf ediff-control-buffer)
-       (ediff-device-type window-system)
        varlist salutation ediff-buffer-name)
     (setq varlist '(ediff-diff-program ediff-diff-options
                     ediff-diff3-program ediff-diff3-options
@@ -3922,8 +3891,7 @@ Ediff Control Panel to restore highlighting."
                    ediff-job-name
                    ediff-word-mode
                    ediff-buffer-name
-                   ediff-device-type
-                   ))
+                    window-system))
     (setq salutation "
 Congratulations!  You may have unearthed a bug in Ediff!
 
@@ -4009,15 +3977,11 @@ Mail anyway? (y or n) ")
              (syntax-table))))
   )
 
-
-(define-obsolete-function-alias 'ediff-deactivate-mark #'deactivate-mark 
"27.1")
-
 (defun ediff-activate-mark ()
+  (declare (obsolete nil "29.1"))
   (setq mark-active 'ediff-util)
   (setq-local transient-mark-mode t))
 
-(define-obsolete-function-alias 'ediff-nuke-selective-display #'ignore "27.1")
-
 ;; The next two are modified versions from emerge.el.
 ;; VARS must be a list of symbols
 ;; ediff-save-variables returns an association list: ((var . val) ...)
@@ -4169,7 +4133,12 @@ Mail anyway? (y or n) ")
        (key-description desc)
       (format "M-x %s" func-def))))
 
+(define-obsolete-function-alias 'ediff-kill-bottom-toolbar #'ignore "27.1")
+(define-obsolete-function-alias 'ediff-make-bottom-toolbar #'ignore "27.1")
+(define-obsolete-function-alias 'ediff-deactivate-mark #'deactivate-mark 
"27.1")
+(define-obsolete-function-alias 'ediff-nuke-selective-display #'ignore "27.1")
 (define-obsolete-function-alias 'ediff-add-to-history #'add-to-history "27.1")
+(define-obsolete-function-alias 'ediff-minibuffer-with-setup-hook 
#'minibuffer-with-setup-hook "28.1")
 (define-obsolete-function-alias 'ediff-copy-list #'copy-sequence "28.1")
 (define-obsolete-function-alias 'ediff-union #'seq-union "28.1")
 (define-obsolete-function-alias 'ediff-intersection #'seq-intersection "28.1")
diff --git a/lisp/vc/ediff-wind.el b/lisp/vc/ediff-wind.el
index bd3f6880da..d45e13ea72 100644
--- a/lisp/vc/ediff-wind.el
+++ b/lisp/vc/ediff-wind.el
@@ -1,6 +1,6 @@
 ;;; ediff-wind.el --- window manipulation utilities  -*- lexical-binding:t -*-
 
-;; Copyright (C) 1994-1997, 2000-2022 Free Software Foundation, Inc.
+;; Copyright (C) 1994-2022 Free Software Foundation, Inc.
 
 ;; Author: Michael Kifer <kifer@cs.stonybrook.edu>
 ;; Package: ediff
@@ -24,23 +24,11 @@
 
 ;;; Code:
 
-
-;; Compiler pacifier
 (defvar icon-title-format)
-(defvar top-toolbar-height)
-(defvar bottom-toolbar-height)
-(defvar left-toolbar-height)
-(defvar right-toolbar-height)
-(defvar left-toolbar-width)
-(defvar right-toolbar-width)
-(defvar default-menubar)
-(defvar top-gutter)
-(defvar frame-icon-title-format)
 (defvar ediff-diff-status)
 
 (require 'ediff-init)
 (require 'ediff-help)
-;; end pacifier
 
 (defgroup ediff-window nil
   "Ediff window manipulation."
@@ -261,8 +249,8 @@ keyboard input to go into icons."
   (let (event)
     (message
      "Select windows by clicking.  Please click on Window %d " wind-number)
-    (while (not (ediff-mouse-event-p (setq event
-                                           (read--potential-mouse-event))))
+    (while (not (mouse-event-p (setq event
+                                     (read--potential-mouse-event))))
       (if (sit-for 1) ; if sequence of events, wait till the final word
          (beep 1))
       (message "Please click on Window %d " wind-number))
@@ -846,7 +834,7 @@ keyboard input to go into icons."
 Create a new splittable frame if none is found."
   (if (display-graphic-p)
       (let ((wind-frame (window-frame))
-            seen-windows)
+            seen-windows)
        (while (and (not (memq (selected-window) seen-windows))
                    (or
                     (ediff-frame-has-dedicated-windows wind-frame)
@@ -855,8 +843,8 @@ Create a new splittable frame if none is found."
                     (< (frame-height wind-frame)
                        (* 3 window-min-height))
                     (if ok-unsplittable
-                        nil
-                      (ediff-frame-unsplittable-p wind-frame))))
+                         nil
+                       (cdr (assq 'unsplittable (frame-parameters 
wind-frame))))))
          ;; remember history
          (setq seen-windows (cons (selected-window) seen-windows))
          ;; try new window
diff --git a/lisp/vc/ediff.el b/lisp/vc/ediff.el
index 840ab8cf51..84ad5cef90 100644
--- a/lisp/vc/ediff.el
+++ b/lisp/vc/ediff.el
@@ -107,8 +107,6 @@
 ;;; Code:
 
 (require 'ediff-util)
-;; end pacifier
-
 (require 'ediff-init)
 (require 'ediff-mult)  ; required because of the registry stuff
 
@@ -283,7 +281,8 @@ deleted.
 Returns the buffer into which the file is visited.
 Also sets `ediff--magic-file-name' to indicate where the file's content
 has been saved (if not in `buffer-file-name')."
-  (let* ((file-magic (ediff-filename-magic-p file))
+  (let* ((file-magic (or (ediff-file-compressed-p file)
+                         (file-remote-p file)))
         (temp-file-name-prefix (file-name-nondirectory file)))
     (cond ((not (file-readable-p file))
           (user-error "File `%s' does not exist or is not readable" file))



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