Make ibuffer-aif obsolete in favor of if-let

* lisp/ibuf-macs.el (ibuffer-aif): Make obsolete in favor of 'if-let'.
* lisp/ibuffer.el (ibuffer-mouse-toggle-mark)
(ibuffer-mark-interactive, ibuffer-compile-format, process):
Prefer 'if-let' to above obsolete macro.
(ibuffer-toggle-marks, ibuffer-map-lines): Prefer 'when-let'
to above obsolete macro.

lisp/ibuf-ext.el

@@ -865,7 +865,7 @@ specification, with the same structure as an element of the list
   "Move point to the filter group whose name is NAME."
   (interactive
    (list (ibuffer-read-filter-group-name "Jump to filter group: ")))
-  (ibuffer-aif (assoc name (ibuffer-current-filter-groups-with-position))
+  (if-let ((it (assoc name (ibuffer-current-filter-groups-with-position))))
       (goto-char (cdr it))
     (error "No filter group with name %s" name)))
 
@@ -876,7 +876,7 @@ The group will be added to `ibuffer-filter-group-kill-ring'."
   (interactive (list (ibuffer-read-filter-group-name "Kill filter group: " t)))
   (when (equal name "Default")
     (error "Can't kill default filter group"))
-  (ibuffer-aif (assoc name ibuffer-filter-groups)
+  (if-let ((it (assoc name ibuffer-filter-groups)))
       (progn
 	(push (copy-tree it) ibuffer-filter-group-kill-ring)
 	(setq ibuffer-filter-groups (ibuffer-remove-alist
@@ -891,13 +891,12 @@ The group will be added to `ibuffer-filter-group-kill-ring'."
   "Kill the filter group at point.
 See also `ibuffer-kill-filter-group'."
   (interactive "P\np")
-  (ibuffer-aif (save-excursion
-		 (ibuffer-forward-line 0)
-		 (get-text-property (point) 'ibuffer-filter-group-name))
-      (progn
-	(ibuffer-kill-filter-group it))
-      (funcall (if interactive-p #'call-interactively #'funcall)
-	       #'kill-line arg)))
+  (if-let ((it (save-excursion
+                 (ibuffer-forward-line 0)
+                 (get-text-property (point) 'ibuffer-filter-group-name))))
+      (ibuffer-kill-filter-group it)
+    (funcall (if interactive-p #'call-interactively #'funcall)
+             #'kill-line arg)))
 
 (defun ibuffer-insert-filter-group-before (newgroup group)
   (let* ((found nil)
@@ -953,7 +952,7 @@ prompt for NAME, and use the current filters."
      (list
       (read-from-minibuffer "Save current filter groups as: ")
       ibuffer-filter-groups)))
-  (ibuffer-aif (assoc name ibuffer-saved-filter-groups)
+  (if-let ((it (assoc name ibuffer-saved-filter-groups)))
       (setcdr it groups)
     (push (cons name groups) ibuffer-saved-filter-groups))
   (ibuffer-maybe-save-stuff))
@@ -1125,7 +1124,7 @@ Interactively, prompt for NAME, and use the current filters."
      (list
       (read-from-minibuffer "Save current filters as: ")
       ibuffer-filtering-qualifiers)))
-  (ibuffer-aif (assoc name ibuffer-saved-filters)
+  (if-let ((it (assoc name ibuffer-saved-filters)))
       (setcdr it filters)
     (push (cons name filters) ibuffer-saved-filters))
   (ibuffer-maybe-save-stuff))
@@ -1337,11 +1336,11 @@ pattern.  For example, for a buffer associated with file
 For a buffer associated with file '/a/b/c.d', this matches
 against '/a/b'.  For a buffer not associated with a file, this
 matches against the value of `default-directory' in that buffer."
-  (:description "directory name"
-   :reader (read-from-minibuffer "Filter by directory name (regex): "))
-  (ibuffer-aif (with-current-buffer buf (ibuffer-buffer-file-name))
-      (let ((dirname (file-name-directory it)))
-        (when dirname (string-match qualifier dirname)))
+  ( :description "directory name"
+    :reader (read-from-minibuffer "Filter by directory name (regex): "))
+  (if-let ((it (with-current-buffer buf (ibuffer-buffer-file-name))))
+      (when-let ((dirname (file-name-directory it)))
+        (string-match qualifier dirname))
     (when default-directory (string-match qualifier default-directory))))
 
 ;;;###autoload (autoload 'ibuffer-filter-by-size-gt  "ibuf-ext")

lisp/ibuf-macs.el

@@ -35,7 +35,7 @@
 If TEST returns non-nil, bind `it' to the value, and evaluate
 TRUE-BODY.  Otherwise, evaluate forms in FALSE-BODY as if in `progn'.
 Compare with `if'."
-  (declare (indent 2))
+  (declare (obsolete if-let "29.1") (indent 2))
   (let ((sym (make-symbol "ibuffer-aif-sym")))
     `(let ((,sym ,test))
        (if ,sym

lisp/ibuffer.el

@@ -832,7 +832,7 @@ width and the longest string in LIST."
       (let ((pt (save-excursion
 		  (mouse-set-point event)
 		  (point))))
-	(ibuffer-aif (get-text-property (point) 'ibuffer-filter-group-name)
+        (if-let ((it (get-text-property (point) 'ibuffer-filter-group-name)))
 	    (ibuffer-toggle-marks it)
 	  (goto-char pt)
 	  (let ((mark (ibuffer-current-mark)))
@@ -1263,8 +1263,8 @@ become unmarked.
 If point is on a group name, then this function operates on that
 group."
   (interactive)
-  (ibuffer-aif (get-text-property (point) 'ibuffer-filter-group-name)
-      (setq group it))
+  (when-let ((it (get-text-property (point) 'ibuffer-filter-group-name)))
+    (setq group it))
   (let ((count
 	 (ibuffer-map-lines
 	  (lambda (_buf mark)
@@ -1336,7 +1336,7 @@ If point is on a group name, this function operates on that group."
   (when (and movement (< movement 0))
     (setq arg (- arg)))
   (ibuffer-forward-line 0)
-  (ibuffer-aif (get-text-property (point) 'ibuffer-filter-group-name)
+  (if-let ((it (get-text-property (point) 'ibuffer-filter-group-name)))
       (progn
 	(require 'ibuf-ext)
 	(ibuffer-mark-on-buffer #'identity mark it))
@@ -1540,7 +1540,7 @@ If point is on a group name, this function operates on that group."
 		    ;; `ibuffer-inline-columns' alist and insert it
 		    ;; into our generated code.  Otherwise, we just
 		    ;; generate a call to the column function.
-		    (ibuffer-aif (assq sym ibuffer-inline-columns)
+                    (if-let ((it (assq sym ibuffer-inline-columns)))
 			(nth 1 it)
 		      `(or (,sym buffer mark) "")))
 		   ;; You're not expected to understand this.  Hell, I
@@ -1737,7 +1737,7 @@ If point is on a group name, this function operates on that group."
        (cond ((zerop total) "No processes")
 	     ((= 1 total) "1 process")
 	     (t (format "%d processes" total))))))
-  (ibuffer-aif (get-buffer-process buffer)
+  (if-let ((it (get-buffer-process buffer)))
       (format "(%s %s)" it (process-status it))
     ""))
 
@@ -1872,8 +1872,8 @@ the buffer object itself and the current mark symbol."
 	    (let ((result
 		   (if (buffer-live-p (ibuffer-current-buffer))
 		       (when (or (null group)
-				 (ibuffer-aif (get-text-property (point) 'ibuffer-filter-group)
-				     (equal group it)))
+                                 (when-let ((it (get-text-property (point) 'ibuffer-filter-group)))
+                                   (equal group it)))
 			 (save-excursion
 			   (funcall function
 				    (ibuffer-current-buffer)