Re: [BUG] error with org-refile and ido-completion-help

[Matt Lundin <mdl@imapmail.org>]

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Matt Lundin <mdl@imapmail.org> writes:

> Nicolas Goaziou <mail@nicolasgoaziou.fr> writes:
>
>>> A git bisect revealed that the change was introduced in 2015 with the
>>> following commit:
>>>
>>> ,----
>>> | commit 50ba0a5ed609f3600f2590f3ba22b8ab3ff3331c
>>> | Author: Nicolas Goaziou <mail@nicolasgoaziou.fr>
>>> | Date:   Sun Jun 7 00:38:58 2015 +0200
>>> | 
>>> |     Fix 1a7364177046b8a57ade0aeb9f52bacfc0b8b088
>>> |     
>>> |     * lisp/org.el (org-icompleting-read): Let `completing-read' or
>>> |       equivalent sort out type of completion.
>>> |     (org-olpath-completing-read): Revert partially
>>> |     1a7364177046b8a57ade0aeb9f52bacfc0b8b088.
>>> `----
>>>
>>> It looks like this commit removed some functionality from the now
>>> obsolete org-icompleting-read that made sure that the items in the
>>> completion list passed to the completing read function were strings.
>>
>> Actually, this is a bug in "ido.el", since `ido-completing-read' is not
>> a drop-in replacement for `completing-read'.  The latter accepts lists
>> of strings, but also alist, obarrays and hash tables. The former accepts
>> only list of strings.
>>
>> I suggest to report the bug to "ido.el" maintainers since they probably
>> want to preserve compatibility between the completion functions.
>
> OK. Thanks. I see that a bug report has been on the emacs list since
> 2013: 
>
> http://debbugs.gnu.org/cgi/bugreport.cgi?bug=15430
>
> For the time being, it's easy enough to write a custom wrapper around
> ido-completing-read, so I think I'll do that.
>
> It's worth nothing that the author of patch that originally added the
> completing-read-function variable did not anticipate that
> ido-completing-read would be a simple drop-in for completing-read:
>
> http://thread.gmane.org/gmane.emacs.devel/134000
>
> For a long time (since at least 2009), org-mode had built-in support for
> ido-mode completion when refiling. So this does seem to be a deprecation
> of longstanding org-mode functionality.
>
> I'll see if we can add something to the docstrings to alert of the need
> to write a wrapper around ido-completing-read.

I think the simplest thing is just to remove the obsolete info in the
manual. Please see the attached patch.

Best,
Matt


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From d66e08b15ddb107135b5cbaa6582c9461347a3a4 Mon Sep 17 00:00:00 2001
From: Matt Lundin <mdl@imapmail.org>
Date: Wed, 1 Jun 2016 12:04:14 -0500
Subject: [PATCH] Remove paragraph about obsolete variables

* doc/org.texi: Remove paragraph documenting now obsolete variables
  org-completion-use-ido and org-completion-use-iswitchbp.
---
 doc/org.texi | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/doc/org.texi b/doc/org.texi
index 88c506c..36ab999 100644
--- a/doc/org.texi
+++ b/doc/org.texi
@@ -16931,12 +16931,6 @@ emacs -Q --batch \
 @cindex tag completion
 @cindex link abbreviations, completion of
 
-Emacs would not be Emacs without completion, and Org mode uses it whenever it
-makes sense.  If you prefer an @i{iswitchb}- or @i{ido}-like interface for
-some of the completion prompts, you can specify your preference by setting at
-most one of the variables @code{org-completion-use-iswitchb}
-@code{org-completion-use-ido}.
-
 Org supports in-buffer completion.  This type of completion does
 not make use of the minibuffer.  You simply type a few letters into
 the buffer and use the key to complete text right there.
-- 
2.8.3