Change tooltip stuff

init.el

@@ -1302,13 +1302,28 @@ display."
           (posframe-hide name))
       (posframe-hide name))))
 
-(defun my/floating-tooltip (name msg)
+(defun my/-floating-tooltip-fill-string (msg &optional width prefix)
+  "Fill MSG to WIDTH, defaulting to 80 characters.
+If PREFIX is a number, add that many spaces before each continuation line.  If
+it is a string, add that string.  If it is nil, add 5 spaces."
+  (with-temp-buffer
+    (insert msg)
+    (let ((fill-column (or width 80))
+          (fill-prefix (if (natnump prefix)
+                           (make-string prefix ? )
+                         prefix)))
+      (fill-region (point-min) (point-max)))
+    (buffer-string)))
+
+(defun my/floating-tooltip (name msg &optional width prefix)
   "If `display-graphic-p', call `my/posframe-tip', otherwise `popup-tip'.
 MSG is the message to show in the popup.  NAME is the name of the buffer to pass
-to `posframe-show' if the display is graphical."
-  (if (display-graphic-p)
-      (my/posframe-tip name msg)
-    (popup-tip msg)))
+to `posframe-show' if the display is graphical.
+WIDTH and PREFIX are as for `my/-floating-tooltip-fill-string'."
+  (let ((msg (my/-floating-tooltip-fill-string msg width prefix)))
+    (if (display-graphic-p)
+        (my/posframe-tip name msg)
+      (popup-tip msg))))
 
 ;; flymake
 (use-package flymake
@@ -1371,7 +1386,7 @@ If BUFFER is nil, the current buffer is used."
     out))
 
 (defun my/-add-list-dot-to-string (str)
-  "Add a dot (•) to the starrt of STR.
+  "Add a dot (•) to the start of STR.
 If STR has multiple lines, add a space to the start of every other line."
   (cl-labels ((rec (acc strs need-add)
                 (if strs
@@ -1389,7 +1404,7 @@ If STR has multiple lines, add a space to the start of every other line."
   (let ((message))
     (when-let* (((bound-and-true-p flymake-mode))
                 (diag (get-char-property (point) 'flymake-diagnostic)))
-      (cl-callf nconc message (string-split (flymake--diag-text diag) "\n" t)))
+      (cl-callf nconc message (list (flymake-diagnostic-text diag))))
     (when (bound-and-true-p flycheck-mode)
       (cl-callf nconc message
         (mapcar 'flycheck-error-message (flycheck-overlay-errors-at (point)))))
@@ -1407,7 +1422,8 @@ If STR has multiple lines, add a space to the start of every other line."
     (when message
       (my/floating-tooltip " *my-diagnostic-posframe*"
                            (mapconcat #'my/-add-list-dot-to-string
-                                      message "\n")))))
+                                      message "\n")
+                           nil 4))))
 
 (defconst my/consult-flymake-flycheck-narrow
   '((?e . "Error")