Merge from origin/emacs-29

de2239a584 Revert "alist-get testfn argument evaluation correction"
856d889f3a Revert "Elide broken but unnecessary `if` optimisations"
8e42e20ed7 Revert "Use equal and member instead of eq and memq"

lisp/cedet/semantic/complete.el

@@ -1731,7 +1731,7 @@ Display mechanism using tooltip for a list of possible completions.")
       ;; Add any tail info.
       (setq msg (concat msg msg-tail))
       ;; Display tooltip.
-      (when (not (equal msg ""))
+      (when (not (eq msg ""))
 	(semantic-displayer-tooltip-show msg)))))
 
 ;;; Compatibility

lisp/descr-text.el

@@ -366,7 +366,7 @@ This function is semi-obsolete.  Use `get-char-code-property'."
 ;; description is added to the category name as a tooltip
 (defsubst describe-char-categories (category-set)
   (let ((mnemonics (category-set-mnemonics category-set)))
-    (unless (equal mnemonics "")
+    (unless (eq mnemonics "")
       (list (mapconcat
 	     (lambda (x)
 	       (let* ((c (category-docstring x))

lisp/emacs-lisp/byte-opt.el

@@ -1298,8 +1298,11 @@ See Info node `(elisp) Integer Basics'."
       (if else
           `(progn ,condition ,@else)
         condition))
-     ;; (if X t) -> (not (not X))
+     ;; (if X nil t) -> (not X)
-     ((and (eq then t) (null else))
+     ((and (eq then nil) (eq else '(t)))
+      `(not ,condition))
+     ;; (if X t [nil]) -> (not (not X))
+     ((and (eq then t) (or (null else) (eq else '(nil))))
       `(not ,(byte-opt--negate condition)))
      ;; (if VAR VAR X...) -> (or VAR (progn X...))
      ((and (symbolp condition) (eq condition then))

lisp/emacs-lisp/gv.el

@@ -417,9 +417,9 @@ The return value is the last VAL in the list.
   (lambda (do key alist &optional default remove testfn)
     (macroexp-let2 macroexp-copyable-p k key
       (gv-letplace (getter setter) alist
-        (macroexp-let2 nil p (if (member testfn '(nil 'eq #'eq))
+        (macroexp-let2 nil p `(if (and ,testfn (not (eq ,testfn 'eq)))
-                                 `(assq ,k ,getter)
+                                  (assoc ,k ,getter ,testfn)
-                               `(assoc ,k ,getter ,testfn))
+                                (assq ,k ,getter))
           (funcall do (if (null default) `(cdr ,p)
                         `(if ,p (cdr ,p) ,default))
                    (lambda (v)

lisp/emulation/viper-cmd.el

@@ -194,9 +194,9 @@
 			   viper-delete-backward-char
 			   viper-join-lines
 			   viper-delete-char))
-      (member (viper-event-key last-command-event)
+      (memq (viper-event-key last-command-event)
-	      '(up down left right (meta f) (meta b)
+	    '(up down left right (meta f) (meta b)
-		(control n) (control p) (control f) (control b)))))
+		 (control n) (control p) (control f) (control b)))))
 
 (defsubst viper-insert-state-pre-command-sentinel ()
   (or (viper-preserve-cursor-color)

lisp/mh-e/mh-identity.el

@@ -141,7 +141,7 @@ See `mh-identity-list'."
            (cons '("None")
                  (mapcar #'list (mapcar #'car mh-identity-list)))
            nil t default nil default))
-    (if (equal identity "None")
+    (if (eq identity "None")
         nil
       identity)))
 

lisp/transient.el

@@ -2203,7 +2203,7 @@ value.  Otherwise return CHILDREN as is."
     (unless abort-only
       (setq post-command
             (lambda () "@transient--delay-post-command"
-              (let ((act (and (not (equal (this-command-keys-vector) []))
+              (let ((act (and (not (eq (this-command-keys-vector) []))
                               (or (eq this-command command)
                                   ;; `execute-extended-command' was
                                   ;; used to call another command
@@ -2241,7 +2241,7 @@ value.  Otherwise return CHILDREN as is."
   (transient--debug 'post-command)
   (transient--with-emergency-exit
     (cond
-     ((and (equal (this-command-keys-vector) [])
+     ((and (eq (this-command-keys-vector) [])
            (= (minibuffer-depth)
               (1+ transient--minibuffer-depth)))
       (transient--suspend-override)

lisp/vc/vc-git.el

@@ -1674,8 +1674,7 @@ This requires git 1.8.4 or later, for the \"-L\" option of \"git log\"."
                                  (if branchp "branch" "tag"))))
          (if branchp
              (vc-git-command nil 0 nil "checkout" "-b" name
-                             (when (and start-point
+                             (when (and start-point (not (eq start-point "")))
-                                        (not (equal start-point "")))
                                start-point))
            (vc-git-command nil 0 nil "tag" name)))))
 

test/lisp/emacs-lisp/cl-lib-tests.el

@@ -404,7 +404,7 @@
 (ert-deftest cl-lib-nth-value-test-multiple-values ()
   "While CL multiple values are an alias to list, these won't work."
   :expected-result :failed
-  (should (equal (cl-nth-value 0 '(2 3)) '(2 3)))
+  (should (eq (cl-nth-value 0 '(2 3)) '(2 3)))
   (should (= (cl-nth-value 0 1) 1))
   (should (null (cl-nth-value 1 1)))
   (should-error (cl-nth-value -1 (cl-values 2 3)) :type 'args-out-of-range)