master 03b780e387: Fix handling of windows/buffers for non-nil completion-auto-select (bug#55712)

[Juri Linkov]

branch: master
commit 03b780e387e54c23ac9322e329aca6e5ab4f18e6
Author: Juri Linkov <juri@linkov.net>
Commit: Juri Linkov <juri@linkov.net>

    Fix handling of windows/buffers for non-nil completion-auto-select 
(bug#55712)
    
    * lisp/minibuffer.el (completion--in-region-1): When completion-auto-select
    is `second-tab', call switch-to-completions outside of 
`with-current-buffer'.
    For the case of completion-auto-select customized to t,
    move switch-to-completions from completion-setup-function
    where it was called inside of with-current-buffer-window.
    
    * lisp/simple.el (completion-setup-function): Move switch-to-completions
    for completion-auto-select=t to completion--in-region-1 where it's
    handled together with the case of `second-tab'.
    (next-completion): Add check for the minibuffer to support in-buffer
    inline completions.
---
 lisp/minibuffer.el | 24 ++++++++++++++++--------
 lisp/simple.el     | 17 ++++++++---------
 2 files changed, 24 insertions(+), 17 deletions(-)

diff --git a/lisp/minibuffer.el b/lisp/minibuffer.el
index 6ae25b8def..cdbde2d340 100644
--- a/lisp/minibuffer.el
+++ b/lisp/minibuffer.el
@@ -1422,9 +1422,10 @@ scroll the window of possible completions."
     (let ((window minibuffer-scroll-window))
       (with-current-buffer (window-buffer window)
         (cond
-         ;; Here this is possible only when second-tab, so jump now.
-         (completion-auto-select
-          (switch-to-completions))
+         ;; Here this is possible only when second-tab, but instead of
+         ;; scrolling the completion list window, switch to it below,
+         ;; outside of `with-current-buffer'.
+         ((eq completion-auto-select 'second-tab))
          ;; Reverse tab
          ((equal (this-command-keys) [backtab])
           (if (pos-visible-in-window-p (point-min) window)
@@ -1438,15 +1439,22 @@ scroll the window of possible completions."
               ;; If end is in view, scroll up to the end.
               (set-window-start window (point-min) nil)
             ;; Else scroll down one screen.
-            (with-selected-window window (scroll-up)))))
-        nil)))
+            (with-selected-window window (scroll-up))))))
+      (when (eq completion-auto-select 'second-tab)
+        (switch-to-completions))
+      nil))
    ;; If we're cycling, keep on cycling.
    ((and completion-cycling completion-all-sorted-completions)
     (minibuffer-force-complete beg end)
     t)
-   (t (pcase (completion--do-completion beg end)
-        (#b000 nil)
-        (_     t)))))
+   (t (prog1 (pcase (completion--do-completion beg end)
+               (#b000 nil)
+               (_     t))
+        (when (and (eq completion-auto-select t)
+                   (window-live-p minibuffer-scroll-window)
+                   (eq t (frame-visible-p (window-frame 
minibuffer-scroll-window))))
+          ;; When the completion list window was displayed, select it.
+          (switch-to-completions))))))
 
 (defun completion--cache-all-sorted-completions (beg end comps)
   (add-hook 'after-change-functions
diff --git a/lisp/simple.el b/lisp/simple.el
index d6b7045432..29c4ba07be 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -9513,14 +9513,14 @@ This affects the commands `next-completion' and
 When the value is t, pressing TAB will switch to the completion list
 buffer when Emacs pops up a window showing that buffer.
 If the value is `second-tab', then the first TAB will pop up the
-window shwoing the completions list buffer, and the next TAB will
+window showing the completions list buffer, and the next TAB will
 switch to that window.
 See `completion-auto-help' for controlling when the window showing
 the completions is popped up and down."
   :type '(choice (const :tag "Don't auto-select completions window" nil)
                  (const :tag "Select completions window on first TAB" t)
-                 (const :tag
-                        "Select completions window on second TAB" second-tab))
+                 (const :tag "Select completions window on second TAB"
+                        second-tab))
   :version "29.1"
   :group 'completion)
 
@@ -9573,7 +9573,8 @@ Also see the `completion-wrap-movement' variable."
           ;; If at the last completion option, wrap or skip
           ;; to the minibuffer, if requested.
           (when completion-wrap-movement
-            (if (and (eq completion-auto-select t) tabcommand)
+            (if (and (eq completion-auto-select t) tabcommand
+                     (minibufferp completion-reference-buffer))
                 (throw 'bound nil)
               (first-completion))))
         (setq n (1- n)))
@@ -9596,9 +9597,9 @@ Also see the `completion-wrap-movement' variable."
           ;; If at the first completion option, wrap or skip
           ;; to the minibuffer, if requested.
           (when completion-wrap-movement
-            (if (and (eq completion-auto-select t) tabcommand)
+            (if (and (eq completion-auto-select t) tabcommand
+                     (minibufferp completion-reference-buffer))
                 (progn
-                  ;; (goto-char (next-single-property-change (point) 
'mouse-face))
                   (throw 'bound nil))
               (last-completion))))
         (setq n (1+ n))))
@@ -9826,9 +9827,7 @@ Called from `temp-buffer-show-hook'."
            (insert "Click on a completion to select it.\n"))
        (insert (substitute-command-keys
                 "In this buffer, type \\[choose-completion] to \
-select the completion near point.\n\n")))))
-  (when (eq completion-auto-select t)
-    (switch-to-completions)))
+select the completion near point.\n\n"))))))
 
 (add-hook 'completion-setup-hook #'completion-setup-function)