[Orgmode] Org-mode version 6.30trans (release_6.30c.43.ga6f7); iswitchb tag completion includes virtual files

[Tassilo Horn]

Remember to cover the basics, that is, what you expected to happen and
what in fact did happen.  You don't know how to make a good report?  See

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------------------------------------------------------------------------

When I want to set a tag using `C-c C-q TAB' I get a iswitchb completion
prompt, cause org-completion-use-iswitchb is t.  I also use iswitchb's
virtual files feature (iswitchb-use-virtual-buffers set to t), which
includes files that aren't opened in a buffer, but are in the recentf
list.  This is a cool thing when switching buffers (I barely use C-x C-f
anymore and switch to the virtual buffer instead), but totally useless
and annoying for tab completion in org.

So when completing anything (files/tags/...) in org with iswitchb,
switchb-use-virtual-buffers should be let-bound to nil before.

Emacs  : GNU Emacs 23.1.50.1 (x86_64-pc-linux-gnu, GTK+ Version 2.16.5)
 of 2009-09-01 on localhost
Package: Org-mode version 6.30trans (release_6.30c.43.ga6f7)

current state:
==============
(setq
 org-log-done 'time
 org-remember-default-headline 'bottom
 org-link-frame-setup '((vm . vm-visit-folder) (gnus . org-gnus-no-new-news) 
(file . find-file-other-window))
 org-special-ctrl-a/e 'reversed
 org-agenda-files '("/home/horn/repos/org/private.org" 
"/home/horn/repos/org/remember.org" "/home/horn/repos/org/uni.org"
                    "~/uni/repos/redseeds-uko/todo/todo.org")
 org-agenda-include-diary t
 org-blocker-hook '(org-block-todo-from-children-or-siblings-or-parent)
 org-completion-use-iswitchb t
 org-hide-leading-stars t
 org-gnus-prefer-web-links t
 org-after-todo-state-change-hook '(org-clock-out-if-current)
 org-attach-directory "/home/horn/repos/org/attachments"
 org-special-ctrl-k t
 org-agenda-restore-windows-after-quit t
 org-export-preprocess-hook '(org-export-blocks-preprocess)
 org-tab-first-hook '(org-hide-block-toggle-maybe)
 org-src-mode-hook '(org-src-mode-configure-edit-buffer)
 org-finalize-agenda-hook '(th-org-agenda-to-appt)
 org-confirm-shell-link-function 'yes-or-no-p
 org-todo-keywords '((sequence "TODO(t)" "STARTED(s)" "WISH(w)" "|" "DONE(d)" 
"CANCELLED(c)"))
 org-agenda-before-write-hook '(org-agenda-add-entry-text)
 org-default-notes-file "~/repos/org/remember.org"
 org-tag-alist '(("meeting" . 109) ("chat" . 99))
 org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-hide-drawers 
org-cycle-show-empty-lines org-optimize-window-after-visibility-change)
 org-mode-hook '(#[nil "\300\301\302\303\304$\207" [org-add-hook 
change-major-mode-hook org-show-block-all append local] 5] th-org-mode-init)
 org-refile-targets '((org-agenda-files :maxlevel . 5))
 org-return-follows-link t
 org-confirm-elisp-link-function 'yes-or-no-p
 org-refile-use-outline-path 'file
 org-log-into-drawer "LOGBOOK"
 org-agenda-mode-hook '(th-org-agenda-mode-init)
 org-enforce-todo-dependencies t
 org-occur-hook '(org-first-headline-recenter)
 org-agenda-skip-additional-timestamps-same-entry nil
 org-outline-path-complete-in-steps nil
 org-columns-default-format "%50ITEM %TODO %ALLTAGS %SCHEDULED %DEADLINE"
 outline-minor-mode-hook '(th-outline-minor-mode-init)
 org-remember-templates '(("TODO" 116 "* TODO %?\n  (created: %U)\n  %i\n  %a")
                          ("BROWSER" 119 "* %:description :browser:\n  
(created: %U)\n\n  %c\n\n  %i"))
 org-remember-backup-directory "~/tmp/"
 org-attach-method 'mv
 )