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From: Ihor Radchenko <yantar92@gmail.com>
To: Max Nikulin <manikulin@gmail.com>
Cc: emacs-orgmode@gnu.org
Subject: Re: [PATCH] Re: [BUG] org-attach-id-ts-folder-format fails on customized IDs [9.6 (9.6-??-2e9999783)]
Date: Thu, 04 Aug 2022 06:25:37 +0800	[thread overview]
Message-ID: <871qtxhsm6.fsf@localhost> (raw)
In-Reply-To: <tce689$rtd$1@ciao.gmane.io>

Max Nikulin <manikulin@gmail.com> writes:

> On 23/07/2022 12:22, Ihor Radchenko wrote:
>> Tentative patch is attached.
>
>> +  (if (< (length id) 3)
>> +      (org-attach-id-uuid-folder-format (md5 id))
>
> Ihor, I am afraid of collisions due to short input to md5. Long hash 
> value gives false impression of high entropy but actually there are not 
> so many variants for 1 or 2 characters strings. Either there is no point 
> in making long name from short id or random string of appropriate length 
> should be used instead.

Random is not an option. If we use random string, how will we get the
right attachment path on a second call? This function must return the
same value given the same input.

Having said that, I do agree (taking into account the other comment)
that md5 may not be a very good idea. Maybe simply something like
"__/id". Ideally, we should be able to recover the original id from the
path to attachment.

Best,
Ihor


  reply	other threads:[~2022-08-03 22:26 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-20 19:12 [BUG] org-attach-id-ts-folder-format fails on customized IDs [9.6 (9.6-??-2e9999783)] Janek F
2022-07-23  5:22 ` [PATCH] " Ihor Radchenko
2022-08-02 22:26   ` Janek F
2022-08-03 16:03   ` Max Nikulin
2022-08-03 22:25     ` Ihor Radchenko [this message]
2022-08-10 11:43       ` [PATCH v2] " Ihor Radchenko
2022-08-10 12:17         ` Max Nikulin
2022-08-10 13:23           ` [PATCH v3] " Ihor Radchenko
2022-08-10 15:18             ` Max Nikulin
2022-08-11  4:19               ` Ihor Radchenko
2022-08-11 14:43                 ` Max Nikulin
2022-08-13  5:29                   ` Ihor Radchenko
2022-08-13 16:25                     ` Max Nikulin
2022-08-14  4:00                       ` Ihor Radchenko
2022-10-02  9:14                         ` [PATCH v4] " Ihor Radchenko
2022-10-04 15:27                           ` Max Nikulin
2022-10-05  5:44                             ` Ihor Radchenko
2022-11-06  7:43                               ` Ihor Radchenko
2022-11-07 17:05                               ` [PATCH] org-attach.el: ID to path functions may return nil Max Nikulin
2022-11-08  5:08                                 ` Ihor Radchenko
2022-11-09 16:53                                   ` [PATCH v2] " Max Nikulin
2022-11-10  7:19                                     ` Ihor Radchenko
2022-11-13 16:26                                       ` Max Nikulin
2022-11-14  3:29                                         ` Ihor Radchenko
2022-11-14 16:59                                           ` Max Nikulin
2022-11-15  2:41                                             ` Ihor Radchenko
2022-11-15 16:41                                               ` Max Nikulin
2022-11-16  1:54                                                 ` Ihor Radchenko
2022-08-12 15:35 ` [BUG] org-attach-id-ts-folder-format fails on customized IDs [9.6 (9.6-??-2e9999783)] Max Nikulin
2022-08-12 16:08   ` Janek F
2022-08-13  5:17     ` Ihor Radchenko
2022-08-13 15:59     ` Max Nikulin

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