master ca95e45f7e8: Avoid confusing message in Ibuffer (bug#64230)

[Stephen Berman]

branch: master
commit ca95e45f7e828aebdf2736c9c7b2d64f9621214e
Author: Stephen Berman <stephen.berman@gmx.net>
Commit: Stephen Berman <stephen.berman@gmx.net>

    Avoid confusing message in Ibuffer (bug#64230)
    
    * lisp/ibuffer.el (ibuffer-map-lines): With `ibuffer-auto-mode'
    enabled, Ibuffer counts the automatically popped up (and hence not
    user-marked) buffer "*Ibuffer confirmation*".  Since Ibuffer
    reports how many user-marked buffers were acted upon, and in this
    case the reported count would be too high by one, decrement the
    count to avoid the confusing message.
---
 lisp/ibuffer.el | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/lisp/ibuffer.el b/lisp/ibuffer.el
index a26bb1811ec..b5a7f2d04e0 100644
--- a/lisp/ibuffer.el
+++ b/lisp/ibuffer.el
@@ -1872,7 +1872,8 @@ the buffer object itself and the current mark symbol."
            (let ((result
                   (if (buffer-live-p (ibuffer-current-buffer))
                       (when (or (null group)
-                                 (when-let ((it (get-text-property (point) 
'ibuffer-filter-group)))
+                                 (when-let ((it (get-text-property
+                                                 (point) 
'ibuffer-filter-group)))
                                    (equal group it)))
                         (save-excursion
                           (funcall function
@@ -1897,7 +1898,16 @@ the buffer object itself and the current mark symbol."
                    (t
                     (cl-incf ibuffer-map-lines-count)
                     (forward-line 1)))))
-         ibuffer-map-lines-count)
+         ;; With `ibuffer-auto-mode' enabled, the preceding loop
+         ;; counts the automatically popped up (and hence not
+         ;; user-marked) buffer "*Ibuffer confirmation*".  Since
+         ;; Ibuffer reports how many user-marked buffers were acted
+         ;; upon, and in this case the reported count would be too
+         ;; high by one, we decrement the count to avoid the
+         ;; confusing message (see bug#64230).
+          (if (and (featurep 'ibuf-ext) ibuffer-auto-mode)
+              (1- ibuffer-map-lines-count)
+            ibuffer-map-lines-count))
       (progn
        (setq buffer-read-only t)
        (unless nomodify