Merge from origin/emacs-27

3b0938c042 (origin/emacs-27) Render Ido suggestions using an overlay
d5d90dc412 * doc/misc/tramp.texi (Bug Reports): Encourage use of "ema...
ac09e8e121 * lisp/vc/smerge-mode.el (smerge-match-conflict): Fix bug#...
7e37e61f4b Correct statement about ftcr and recommend HarfBuzz
4aec94da37 Avoid leaving artifacts when the system caret is used on w32
5abd8d73b0 Improve display of temporary echo messages

3 files changed, 21 insertions, 4 deletions

diff --git a/lisp/ido.el b/lisp/ido.el
index 83b88e4e81c..355be5eaa66 100644
--- a/lisp/ido.el
+++ b/lisp/ido.el
@@ -4492,6 +4492,8 @@ For details of keybindings, see `ido-find-file'."
 	(ido-tidy))
       (throw 'ido contents))))
 
+(defvar ido--overlay nil)
+
 (defun ido-exhibit ()
   "Post command hook for Ido."
   ;; Find matching files and display a list in the minibuffer.
@@ -4726,7 +4728,13 @@ For details of keybindings, see `ido-find-file'."
 	(let ((inf (ido-completions contents)))
 	  (setq ido-show-confirm-message nil)
 	  (ido-trace "inf" inf)
-	  (insert inf))
+          (when ido--overlay
+            (delete-overlay ido--overlay))
+          (let ((o (make-overlay (point-max) (point-max) nil t t)))
+            (when (> (length inf) 0)
+              (put-text-property 0 1 'cursor t inf))
+            (overlay-put o 'after-string inf)
+            (setq ido--overlay o)))
 	))))
 
 (defun ido-completions (name)
diff --git a/lisp/minibuffer.el b/lisp/minibuffer.el
index 4831bf72e9d..0589211877a 100644
--- a/lisp/minibuffer.el
+++ b/lisp/minibuffer.el
@@ -766,7 +766,7 @@ and `clear-minibuffer-message' called automatically via
 (defun set-minibuffer-message (message)
   "Temporarily display MESSAGE at the end of the minibuffer.
 The text is displayed for `minibuffer-message-clear-timeout' seconds
-(if the value is a number), or until the next input event arrives,
+\(if the value is a number), or until the next input event arrives,
 whichever comes first.
 Unlike `minibuffer-message', this function is called automatically
 via `set-message-function'."
@@ -790,8 +790,14 @@ via `set-message-function'."
         ;; The current C cursor code doesn't know to use the overlay's
         ;; marker's stickiness to figure out whether to place the cursor
         ;; before or after the string, so let's spoon-feed it the pos.
-        (put-text-property 0 1 'cursor t message))
+        (put-text-property 0 1 'cursor 1 message))
       (overlay-put minibuffer-message-overlay 'after-string message)
+      ;; Make sure the overlay with the message is displayed before
+      ;; any other overlays in that position, in case they have
+      ;; resize-mini-windows set to nil and the other overlay strings
+      ;; are too long for the mini-window width.  This makes sure the
+      ;; temporary message will always be visible.
+      (overlay-put minibuffer-message-overlay 'priority 1100)
 
       (when (numberp minibuffer-message-clear-timeout)
         (setq minibuffer-message-timer
diff --git a/lisp/vc/smerge-mode.el b/lisp/vc/smerge-mode.el
index d4984bbd38b..85868b91ecc 100644
--- a/lisp/vc/smerge-mode.el
+++ b/lisp/vc/smerge-mode.el
@@ -797,7 +797,10 @@ An error is raised if not inside a conflict."
 	       (filename (or (match-string 1) ""))
 
 	       (_ (re-search-forward smerge-end-re))
-	       (_ (cl-assert (< orig-point (match-end 0))))
+	       (_ (when (< (match-end 0) orig-point)
+	            ;; Point is not within the conflict we found,
+                    ;; so this conflict is not ours.
+	            (signal 'search-failed (list smerge-begin-re))))
 
 	       (lower-end (match-beginning 0))
 	       (end (match-end 0))