Hi Gustav,

I can see that it feels more natural to use timestamps.  I certainly see
that relative file names are good for across-computer compatibility.

You system assumes, if I see that correctly (have not studied it yet), that
not more that one ID will be created per second.  Or do you have something
in place that will catch this, for example if someone uses the mapping API
to assign IDs to a whole bunch of entries in a short time?

You are right that this is not documented in the manual, even though it is
used for lings and for attachments.  Maybe it would be good to explain it
in an appendix to the manual?  Would you like to draft such a section,
since you have been looking into this problem?

Do you think the default setting for Org should be modified?


On Fri, Aug 2, 2019 at 5:14 PM Gustav Wikström <gus...@whil.se> wrote:

> Hi!
> I've pushed a couple of fixes and changes to master related to org-id.
> First; a fix and a (major) speedup and method-change for how the
> global caching works for ID's. The change in method is that providing
> file's as arguments to org-id-update-id-locations no longer breaks the
> existing id locations.
> Second; I've added a customization so one can choose to cache the
> id-locations as relative to the org-id-locations-file instead of as
> absolute links. This helps a lot when running a system mirrored on
> multiple machines where the absolute paths to ones documents might
> differ, but where it's all the same relative to the
> org-id-locations-file.
> Third; I've added another ID generator method. The extremists might
> say the new method is not unique enough but org-mode is a personal
> system first and foremost, so I think there is merit to this new ID
> method. It creates ID's based on current timestamp and doesn't try to
> hide the timestamp from the user. One might call the ID's "natural"
> since they are contain information in themselves. Certainly a good
> thing for some. The new method will not be active unless explicitly
> chosen by the user.
>     As a side note, if using ID's together with attachments, try this
>     new ID-generator out by setting org-id-method to ts (short for
>     timestamp) and change the org-attach-id-to-path-function to
>     something like "YYYY/MM/DDTHHMMSS" for more human readable
>     attachment folders.
> Org-id is next to undocumented in the manual so I didn't find a good
> place to add this. A few lines are added to org-news though.
> This is the first push by me without first doing an RFC. So,
> naturally, if anything is out of order mail back and/or make changes
> directly in the repo if needed. Tests passed anyways.
> Kind regards
> Gustav

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