Rename +popup-display-buffer

To +popup-display-buffer-stacked-side-window, to make it more obvious
what it actually does.

modules/ui/popup/+hacks.el

@@ -168,7 +168,7 @@ the command buffer."
 
 ;; `helm'
 (after! helm
-  (setq helm-default-display-buffer-functions '(+popup-display-buffer))
+  (setq helm-default-display-buffer-functions '(+popup-display-buffer-stacked-side-window))
   (set-popup-rule! "^\\*helm" :ignore t))
 
 
@@ -260,13 +260,13 @@ instead of switch-to-buffer-*."
 ;; `pdf-tools'
 (after! pdf-tools
   (setq tablist-context-window-display-action
-        '((+popup-display-buffer)
+        '((+popup-display-buffer-stacked-side-window)
           (side . left)
           (slot . 2)
           (window-height . 0.3)
           (inhibit-same-window . t))
         pdf-annot-list-display-buffer-action
-        '((+popup-display-buffer)
+        '((+popup-display-buffer-stacked-side-window)
           (side . left)
           (slot . 3)
           (inhibit-same-window . t)))
@@ -290,7 +290,7 @@ instead of switch-to-buffer-*."
       (lambda (act-popup-dim)
         (cl-letf (((symbol-function 'display-buffer-in-side-window)
                    (lambda (buffer alist)
-                     (+popup-display-buffer
+                     (+popup-display-buffer-stacked-side-window
                       buffer (append '((vslot . -9999)) alist)))))
           (which-key--show-buffer-side-window act-popup-dim))))
 

modules/ui/popup/autoload/popup.el

@@ -574,10 +574,10 @@ and may be called only if no window on SIDE exists yet."
   (advice-add #'window--sides-check :override #'ignore))
 
 ;;;###autoload
-(defun +popup-display-buffer (buffer alist)
+(defun +popup-display-buffer-stacked-side-window (buffer alist)
   "A `display-buffer' action that serves as an alternative to
-`display-buffer-in-side-window', but allows for stacking popups not only
-laterally with the `vslot' alist entry.
+`display-buffer-in-side-window', but allows for stacking popups with the `vslot'
+alist entry.
 
 Accepts the same arguments as `display-buffer-in-side-window'. You must set
 `window--sides-inhibit-check' to non-nil for this work properly."

modules/ui/popup/config.el

@@ -79,7 +79,7 @@ a brief description of some native window parameters that Emacs uses:
   `pop-to-buffer'. Doom popups sets this. The default is nil.")
 
 (defvar +popup-display-buffer-actions
-  '(display-buffer-reuse-window +popup-display-buffer)
+  '(display-buffer-reuse-window +popup-display-buffer-stacked-side-window)
   "The functions to use to display the popup buffer.")
 
 (defvar +popup-default-alist