Add instability disclaimer to README

README.md

@@ -7,6 +7,9 @@ Forked from the excellent [eldoc-box](https://github.com/casouri/eldoc-box/) pac
 <!-- [![MELPA](https://melpa.org/packages/mood-line-badge.svg)](https://melpa.org/#/eldoc-frame) -->
 <!-- [![MELPA Stable](https://stable.melpa.org/packages/mood-line-badge.svg)](https://stable.melpa.org/#/eldoc-frame) -->
 
+**NOTE**: This package is not yet considered to be in a "released" state. Breaking changes may occur without warning,
+and it is not currently available on MELPA.
+
 ## Preview
 
 ![Preview Image](.repo-assets/preview.webp "Preview Image")

eldoc-frame.el

@@ -331,28 +331,27 @@ All functions are run with the eldoc child frame selected."
 ;; Frame geometry
 ;; ---------------------------------- ;;
 
-(defun eldoc-frame--selected-window-side ()
-  "Return which side of the frame the selected window is on.
-Return ‘left’ if the selected window is on the left, or ‘right’ if the selected
-window is on the right. Return ‘left’ if there is only one window in the frame."
-  (let* ((window-left (nth 0 (window-absolute-pixel-edges)))
-         (window-right (nth 2 (window-absolute-pixel-edges)))
-         (frame-left (nth 0 (frame-edges)))
-         (frame-right (nth 2 (frame-edges)))
-         (distance-left (- window-left frame-left))
-         (distance-right (- frame-right window-right)))
-    (if (<= distance-left distance-right) 'left 'right)))
-
 (defun eldoc-frame--calc-frame-x-position (frame)
-  "Calculate the appropriate X position (offset) for FRAME."
-  (pcase-let ((`(,offset-l ,offset-r) eldoc-frame-offset))
-    (pcase (eldoc-frame--selected-window-side)
-      ;; Selected window is on the left, so child frame should be on the right:
-      ('left (- (frame-pixel-width (selected-frame))
-                (frame-pixel-width frame)
-                offset-r))
-      ;; Selected window is on the right, so child frame should be on the left:
-      ('right offset-l))))
+  "Calculate the appropriate X position (offset) for FRAME.
+If the selected window is on the right side of the selected frame and is too
+small to overlay FRAME over, or if `point' is too close to the right edge of the
+selected frame, return an X coordinate that will place FRAME on the left side of
+the selected frame. Otherwise, return an X coordinate that will place FRAME on
+the right side of the selected frame."
+  (let ((offset-l (nth 0 eldoc-frame-offset))
+        (offset-r (nth 2 eldoc-frame-offset))
+        (window-left (nth 0 (window-absolute-pixel-edges)))
+        (min-containing-width (* (eval eldoc-frame-max-pixel-width) 2))
+        (cursor-x-position (or (car (window-absolute-pixel-position)) 0)))
+    (if (or (and (< (window-pixel-width) min-containing-width)
+                 (> window-left (* (frame-pixel-width) .40)))
+            (> cursor-x-position (* (frame-pixel-width) .70)))
+        ;; FRAME should be displayed on the left:
+        offset-l
+      ;; FRAME should be displayed on the right:
+      (- (frame-pixel-width (selected-frame))
+         (frame-pixel-width frame)
+         offset-r))))
 
 (defun eldoc-frame--update-frame-geometry (frame)
   "Update size and position of FRAME."
@@ -534,7 +533,7 @@ reused. Otherwise, a new frame is created by `eldoc-frame--create-child-frame'."
   (when (timerp eldoc-frame--idle-timer)
     (setq eldoc-frame--idle-timer (cancel-timer eldoc-frame--idle-timer)))
   ;; Remove window state change hooks
-  (remove-hook 'window-size-change-functions #'eldoc-frame--maybe-resize-frame)
+  (remove-hook 'window-state-change-hook #'eldoc-frame--maybe-resize-frame)
   (remove-hook 'window-state-change-hook #'eldoc-frame--maybe-hide-frame)
   ;; Restore the original buffer-local value of `eldoc-display-functions'
   (setq-local eldoc-display-functions