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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: Fri, 28 May 2010 02:45:52 +0100

On 28 May 2010 02:21, Leo <address@hidden> wrote:
>>> I think it is in the added code in ido-exhibit which is run in
>>> post-command-hook if I remember correctly.
>>> When your input doesn't match any (including virtual ones), the code
>>> in ido-exhibit tells ido (the big LOOP in ido-read-internal) to
>>> rebuild the buffer list and there isn't any match so it rebuild again
>>> and again. Go into a infinite loop.
>>> You could try creating a new let-bound variable to detect such a
>>> situation and avoid the infinite loop.
>> Thanks for that.  Here's a new patch which uses a new dynamic variable.
>> It seems to work as far as I can tell, but it would be great if you
>> could give it a test drive.
>> One other wishlist item would be to remove virtual buffers from the
>> completion list as soon as the input string matches a normal buffer
>> again, because the user deleted some chars from the input...
>> Bye,
>> Tassilo
> I slightly modified the patch and implemented the wishlist item.
> For buffers, if a let-bound variable can be added in
> ido-buffers-internal I usually avoid adding it in ido-read-internal.
> To remove virtual buffers as soon as input matches existing ones, the
> idea is to build a list of existing buffers (ignored buffers are not
> included) and then match the input against it in ido-exhibit. My
> testing is very brief though it seems working fine. Could you test it
> more thoroughly? Also remember to try the toggle virtual buffers key
> C-o too. Thanks.
> Leo

The can be changed
@@ -3427,7 +3431,9 @@ for first matching file."
     (if default
         (setq ido-temp-list
               (cons default (delete default ido-temp-list))))
-    (if ido-use-virtual-buffers
+    (if (or (eq ido-use-virtual-buffers 'always)
+           (and (boundp ido-virtual-buffers-enabled)
+                ido-virtual-buffers-enabled))
     (run-hooks 'ido-make-buffer-list-hook)


@@ -2736,7 +2739,8 @@ C-x C-f ... C-d  enter `dired' on current directory."
 See `ido-use-virtual-buffers' for explanation of virtual buffer."
   (when (and ido-mode (eq ido-cur-item 'buffer))
-    (setq ido-use-virtual-buffers (not ido-use-virtual-buffers))
+    (setq ido-virtual-buffers-enabled
+         (not ido-virtual-buffers-enabled))
     (setq ido-text-init ido-text)
     (setq ido-exit 'refresh)


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