[Emacs-diffs] /srv/bzr/emacs/trunk r99373: ido.el: Consider the possibility of buffer names changing after kill-buffer.

[Juanma Barranquero]

------------------------------------------------------------
revno: 99373
author: Óscar Fuentes <address@hidden>
committer: Juanma Barranquero <address@hidden>
branch nick: trunk
timestamp: Mon 2010-01-18 20:34:55 +0100
message:
  ido.el: Consider the possibility of buffer names changing after kill-buffer.
modified:
  lisp/ChangeLog
  lisp/ido.el

=== modified file 'lisp/ChangeLog'
--- a/lisp/ChangeLog    2010-01-18 16:29:00 +0000
+++ b/lisp/ChangeLog    2010-01-18 19:34:55 +0000
@@ -1,3 +1,15 @@
+2010-01-18  Óscar Fuentes  <address@hidden>
+
+       * ido.el (ido-cur-list): Initialize as nil.
+       Remove obsolete information from commentary.
+        (ido-choice-list): Initialize as nil.
+        (ido-get-bufname): Reject minibuffers.
+        (ido-make-buffer-list): If "default" is a nonexistent
+        buffer, ignore it, as per the docstring.
+        (ido-kill-buffer-internal): New function.
+        (ido-kill-buffer-at-head): Use it.
+        (ido-visit-buffer): Likewise.
+
 2010-01-18  Chong Yidong  <address@hidden>
 
        * calendar/time-date.el (date-to-time): Doc fix (Bug#5408).

=== modified file 'lisp/ido.el'
--- a/lisp/ido.el       2010-01-13 08:35:10 +0000
+++ b/lisp/ido.el       2010-01-18 19:34:55 +0000
@@ -1042,11 +1042,11 @@
 ;; Stores the current list of items that will be searched through.
 ;; The list is ordered, so that the most interesting item comes first,
 ;; although by default, the files visible in the current frame are put
-;; at the end of the list.  Created by `ido-make-item-list'.
-(defvar ido-cur-list)
+;; at the end of the list.
+(defvar ido-cur-list nil)
 
 ;; Stores the choice list for ido-completing-read
-(defvar ido-choice-list)
+(defvar ido-choice-list nil)
 
 ;; Stores the list of items which are ignored when building
 ;; `ido-cur-list'.  It is in no specific order.
@@ -3344,7 +3344,7 @@
     (if ido-temp-list
        (nconc ido-temp-list ido-current-buffers)
       (setq ido-temp-list ido-current-buffers))
-    (if default
+    (if (and default (buffer-live-p (get-buffer default)))
        (progn
          (setq ido-temp-list
                (delete default ido-temp-list))
@@ -3590,6 +3590,7 @@
   ;; Used by `ido-get-buffers-in-frames' to walk through all windows
   (let ((buf (buffer-name (window-buffer win))))
        (unless (or (member buf ido-bufs-in-frame)
+                   (minibufferp buf)
                    (member buf ido-ignore-item-temp-list))
          ;; Only add buf if it is not already in list.
          ;; This prevents same buf in two different windows being
@@ -3830,6 +3831,27 @@
              ;;(add-hook 'completion-setup-hook 'completion-setup-function)
              (display-completion-list completion-list)))))))
 
+(defun ido-kill-buffer-internal (buf)
+  "Kill buffer BUF and rebuild ido's buffer list if needed."
+  (if (not (kill-buffer buf))
+      ;; buffer couldn't be killed.
+      (setq ido-rescan t)
+    ;; else buffer was killed so remove name from list.
+    (setq ido-cur-list (delq buf ido-cur-list))
+    ;; Some packages, like uniquify.el, may rename buffers when one
+    ;; is killed, so we need to test this condition to avoid using
+    ;; an outdated list of buffer names. We don't want to always
+    ;; rebuild the list of buffers, as this alters the previous
+    ;; buffer order that the user was seeing on the prompt. However,
+    ;; when we rebuild the list, we try to keep the previous second
+    ;; buffer as the first one.
+    (catch 'update
+      (dolist (b ido-cur-list)
+       (unless (get-buffer b)
+         (setq ido-cur-list (ido-make-buffer-list (cadr ido-matches)))
+         (setq ido-rescan t)
+         (throw 'update nil))))))
+
 ;;; KILL CURRENT BUFFER
 (defun ido-kill-buffer-at-head ()
   "Kill the buffer at the head of `ido-matches'.
@@ -3840,7 +3862,7 @@
     (let ((enable-recursive-minibuffers t)
          (buf (ido-name (car ido-matches))))
       (when buf
-       (kill-buffer buf)
+       (ido-kill-buffer-internal buf)
        ;; Check if buffer still exists.
        (if (get-buffer buf)
            ;; buffer couldn't be killed.
@@ -3884,7 +3906,7 @@
      ((eq method 'kill)
       (if record
          (ido-record-command 'kill-buffer buffer))
-      (kill-buffer buffer))
+      (ido-kill-buffer-internal buffer))
 
      ((eq method 'other-window)
       (if record