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Re: Concerning the new `ido-use-virtual-buffers' feature

From: Leo
Subject: Re: Concerning the new `ido-use-virtual-buffers' feature
Date: Thu, 27 May 2010 10:56:53 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (Mac OS X 10.6.3)

Hello Tassilo,

> Ok, I see.  By the way, why is there another variable for that instead
> of different values to `ido-use-virtual-buffers' (nil, any non-nil and
> 'automatically)?  At least from a user perspective, I'd find that more
> logical, especially when using `customize'.

My fault.

I think I did consider this but I don't remember why I didn't go down
that route. It could be I didn't like the slightly more complex way of
toggling virtual buffers. I am a bit short of time at the moment but I
have put this in my TODO and will look at it again.

Meanwhile feel free to change the patch.

    Turn on virtual buffers automatically when no matches

        Modified lisp/ido.el
diff --git a/lisp/ido.el b/lisp/ido.el
index b200397..880592d 100644
--- a/lisp/ido.el
+++ b/lisp/ido.el
@@ -799,6 +799,14 @@ enabled if this variable is configured to a non-nil value."
   :type 'integer
   :group 'ido)
+(defcustom ido-use-virtual-buffers-automatically nil
+  "Use virtual buffers automatically.
+If non-nil, virtual buffers are automatically enabled when user
+input does not match any existing buffers."
+  :version "24.1"
+  :type 'boolean
+  :group 'ido)
 (defcustom ido-use-faces t
   "Non-nil means use ido faces to highlighting first match, only match and
 subdirs in the alternatives."
@@ -4491,6 +4499,15 @@ For details of keybindings, see `ido-find-file'."
            (setq ido-exit 'refresh)
+        (when (and ido-use-virtual-buffers-automatically
+                   (eq ido-cur-item 'buffer)
+                   (not ido-matches)
+                   (not ido-use-virtual-buffers))
+          (setq ido-text-init ido-text)
+          (setq ido-use-virtual-buffers t)
+          (setq ido-exit 'refresh)
+          (exit-minibuffer))
        (when (and
               (not ido-matches)



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