Hi again,

FYI, I’ve applied a patch that will make it easier to change the default 
without breaking any existing functionality. I.e. we can avoid breakage for 
existing attachment-folders if we at some point in the future would choose to 
change default for ID’s to timestamp.

Commit 42b8db0d3


From: Gustav Wikström
Sent: den 31 augusti 2019 21:17
To: Carsten Dominik <domi...@uva.nl>
Cc: emacs-orgmode@gnu.org
Subject: RE: [O] org-id fixups and minor changes

Hi Carsten,

Yeah – you’re right, I didn’t think that much about automated ID creation so I 
stopped at seconds. I agree that it would be more general with more precision 
but that will also add some more noise into each ID. Maybe that’s not 
significant. But I also wonder how common it will be to try to batch-add ID’s…? 
I have nothing against adding more precision though, if that’s requested. What 
do you think?

Regarding documentation I’ll try to give it some thought. Maybe I’ll find some 
time to describe this area better 😊.

I wouldn’t mind changing the default from random to timestamp. But I’m not so 
sure about all the others? One thing that complicates things is the way 
attachment functionality parse the ID. If we use timestamps as the default ID 
it makes sense to change the default way org-attach parses the ID into folders 
as well. Something like “YYYY/MM/DD_and_the_rest”. But that will be a breaking 
changing. The existing folder-structure for attachments wouldn’t match the new 
any longer. Cleverness in code might solve the breakage though… If there is 
interest in changing the default I can try to solve the issue with the breaking 
change as well.


From: Carsten Dominik <domi...@uva.nl<mailto:domi...@uva.nl>>
Sent: den 10 augusti 2019 00:34
To: Gustav Wikström <gus...@whil.se<mailto:gus...@whil.se>>
Cc: emacs-orgmode@gnu.org<mailto:emacs-orgmode@gnu.org>
Subject: Re: [O] org-id fixups and minor changes

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?


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