Hi Samuel,

this is deep inside the ido routines, and I do not have enough
insight to see what is going on.  Maybe send a bug report to Kim?
Maybe you can create a test case for him by capturing the table
before it is passed to the ido-complete command?


If it is really the length of the strings, a uniquify-like solution
might be workable, but constructing the uniquify list may
be slow as well.....
I am putting this on my list, but not for the current year :-)

- Carsten

On Dec 19, 2008, at 11:32 PM, Samuel Wales wrote:

> *** ido
> Hi Carsten,
>
> Thanks for looking at the speed issues.
>
> This time an error showed up.  The error from the messages
> buffer is:
>
>  Getting targets...done
>  eq: Wrong type argument: arrayp, (#("footodo/...
>
> The trigger is:
>
> org-goto, same settings as before, searching for a headline called
> "parsing risk",
> which does exist but never shows up as the main candidate.
> I did load-file on ido.el and org.el for a better backtrace.
>
> I don't know the meanings of the different color patterns in
> ido, and this might be a hint for speed, or this error, or both.
>
> p --
>  shows an entry in body text face with a ^ with a red
>  background, rest of candidates are in red, fast.
> pa -- same but with different entry
> par -- same but with different entry
> pars -- only one candidate shows and it is in green, fast
> parsi --
>  back to the first color pattern, different entry, slightly
>  slower
> parsin -- same entry as parsi, slightly slower
> parsing --
>  same but with different entry, slower still (but only a
>  few seconds for me; maybe not noticeable on your computer)
> parsing  (space after g) --
>  causes error, space not inserted, fast
>
> I append the backtrace.  It isn't perfect.  I deleted a
> small number of lines that had the entire completion list in
> them (the whole backtrace is 700k) and had to minorly
> obfuscate a line for privacy, but did so in a consistent
> way.
>
> ido-auto-merge-delay-time might or might not be relevant.  I
> have it set to the default of 0.7.
>
> Thanks.
>
> =====
>
> The backtrace is:
>
>  aref((#("footodo/mumble/issues/is froz bar foo something risking/" 0
> 6 (face org-level-1 org-category "todo-foo" fontified t) 6 7 nil 7 13
> (face org-level-1 org-category #("mumble" 0 6 ...) fontified t) 13 14
> nil 14 20 (face org-level-1 org-category #("mumble" 0 6 ...) fontified
> t) 20 21 nil 21 64 (org-category #("mumble" 0 6 ...) fontified nil) 64
> 65 nil) "/Users/foo/Desktop/a/quux/todo-foo.org"
> "^\\*\\*\\*\\*\\*\\*\\* TODO is froz bar foo something risking[ 	]*$"
> 17576) 3)
>  (eq (aref s l) 47)
>  (and (> l 0) (eq (aref s l) 47))
>  (if (and (> l 0) (eq ... 47)) (substring s 0 l) s)
>  (let ((l ...)) (if (and ... ...) (substring s 0 l) s))
>  ido-no-final-slash((#("...
>  (string-lessp (ido-no-final-slash a) (ido-no-final-slash b))
>  ido-file-lessp((#("...
>  sort(((#("...
>  (let ((completion-list ...)) (if (featurep ...) (let ... ...)
> (display-completion-list completion-list)))
>  (with-output-to-temp-buffer ido-completion-buffer (let (...) (if ...
> ... ...)))
>  (if display-it (with-output-to-temp-buffer ido-completion-buffer
> (let ... ...)))
>  (let ((temp-buf ...) display-it full-list) (if (and ... temp-buf)
> (let ... ... ... ... ... ...) (setq display-it t)) (if display-it
> (with-output-to-temp-buffer ido-completion-buffer ...)))
>  ido-completion-help()
>  call-interactively(ido-completion-help)
>  (if (and (not ...) (not ...)) (progn (setq ido-rescan ...)
> (delete-region ... ...) (insert res)) (call-interactively (setq
> this-command ido-cannot-complete-command)))
>  (cond (ido-incomplete-regexp) ((and ... ...) (let ... ...))
> (ido-directory-too-big (setq ido-directory-too-big nil) (setq
> ido-text-init ido-text) (setq ido-exit ...) (exit-minibuffer)) ((not
> ido-matches) (when ido-completion-buffer ...)) ((and ... ... ...) (if
> ... ... ... ... ...)) (t (setq res ido-common-match-string) (if ...
> ... ...)))
>  (let (res) (cond (ido-incomplete-regexp) (... ...)
> (ido-directory-too-big ... ... ... ...) (... ...) (... ...) (t ...
> ...)))
>  ido-complete()
>  (if (and (stringp ido-common-match-string) (stringp ido-text) (cond
> ... ... ...)) (insert " ") (ido-complete))
>  ido-complete-space()
>  call-interactively(ido-complete-space)
>  completing-read("Goto: " (("dummy" . 1)) nil nil nil org-refile- 
> history)
>  (catch (quote ido) (completing-read (ido-make-prompt item prompt)
> (quote ...) nil nil (prog1 ido-text-init ...) history))
>  (setq ido-final-text (catch (quote ido) (completing-read ... ... nil
> nil ... history)))
>  (let ((minibuffer-local-completion-map ...)
> (minibuffer-local-filename-completion-map ...) (max-mini-window-height
> ...) (ido-completing-read t) (ido-require-match require-match)
> (ido-use-mycompletion-depth ...) (show-paren-mode nil)) (setq ido-exit
> nil) (setq ido-final-text (catch ... ...)))
>  (while (not done) (ido-trace "
> _LOOP_" ido-text-init) (setq ido-exit nil) (setq ido-rescan t) (setq
> ido-rotate nil) (setq ido-text "") (when ido-set-default-item (setq
> ido-default-item ...) (if ... ...) (ido-trace "new default"
> ido-default-item) (if ido-default-item ...) (setq ido-set-default-item
> nil)) (if ido-process-ignore-lists-inhibit (setq
> ido-process-ignore-lists nil)) (if (and ido-use-merged-list ... ...)
> (let ... ... ...)) (cond (ido-keep-item-list ...) (... ...) (... ...)
> (... ...) (... ...) (t nil)) (setq ido-rotate-temp nil) (if
> ido-process-ignore-lists-inhibit (setq ido-process-ignore-lists t
> ido-process-ignore-lists-inhibit nil)) (ido-set-matches) (if (and
> ido-matches ...) (setq ido-try-merged-list t)) (let (... ... ... ...
> ... ... ...) (setq ido-exit nil) (setq ido-final-text ...)) (ido-trace
> "completing-read" ido-final-text) (if (get-buffer
> ido-completion-buffer) (kill-buffer ido-completion-buffer)) (ido-trace
> "
> _EXIT_" ido-exit) (cond (... ... nil) (... ...) (... ... nil) (...
> ...) (... ...) (... ...) (... ... ...) (... ... ...) (... ...) (t ...
> ...)))
>  (let ((ido-cur-item item) (ido-entry-buffer ...)
> (ido-process-ignore-lists t) (ido-process-ignore-lists-inhibit nil)
> (ido-set-default-item t) ido-default-item ido-selected ido-final-text
> (done nil) (icomplete-mode nil) ido-cur-list ido-ignored-list
> (ido-rotate-temp nil) (ido-keep-item-list nil) (ido-use-merged-list
> nil) (ido-try-merged-list t) (ido-pre-merge-state nil) (ido-case-fold
> ido-case-fold) (ido-enable-prefix ido-enable-prefix)
> (ido-enable-regexp ido-enable-regexp)) (ido-setup-completion-map)
> (setq ido-text-init initial) (setq ido-input-stack nil) (run-hooks
> (quote ido-setup-hook)) (while (not done) (ido-trace "
> _LOOP_" ido-text-init) (setq ido-exit nil) (setq ido-rescan t) (setq
> ido-rotate nil) (setq ido-text "") (when ido-set-default-item ... ...
> ... ... ...) (if ido-process-ignore-lists-inhibit ...) (if ... ...)
> (cond ... ... ... ... ... ...) (setq ido-rotate-temp nil) (if
> ido-process-ignore-lists-inhibit ...) (ido-set-matches) (if ... ...)
> (let ... ... ...) (ido-trace "completing-read" ido-final-text) (if ...
> ...) (ido-trace "
> _EXIT_" ido-exit) (cond ... ... ... ... ... ... ... ... ... ...))  
> ido-selected)
>  ido-read-internal(list "Goto: " org-refile-history nil t nil)
>  (let ((ido-current-directory nil) (ido-directory-nonreadable nil)
> (ido-directory-too-big nil) (ido-context-switch-command ...)
> (ido-choice-list choices)) (ido-read-internal (quote list) prompt hist
> def require-match initial-input))
>
> ...
>
>  (if (and org-completion-use-ido (fboundp ...) (boundp ...) ido-mode
> (listp ...)) (apply (quote ido-completing-read) (concat ...) (cdr
> args)) (apply (quote completing-read) args))
>
> ...
>
>  (let* ((cbuf ...) (cfunc ...) (extra ...) (filename ...) (tbl ...)
> (completion-ignore-case t)) (assoc (funcall cfunc prompt tbl nil t nil
> ...) tbl))
>  org-refile-get-location("Goto: ")
>  (nth 3 (org-refile-get-location "Goto: "))
>  (if (eq interface (quote outline)) (car (org-get-location ...
> org-goto-help)) (nth 3 (org-refile-get-location "Goto: ")))
>  (let* ((org-refile-targets ...) (org-refile-use-outline-path t)
> (interface ...) (org-goto-start-pos ...) (selected-point ...)) (if
> selected-point (progn ... ... ...) (message "Quit")))
>  org-goto(nil)
>  call-interactively(org-goto)