* ascii-timestamps like 31.12.2021 to iso(org) format <2020-12-31> and back
@ 2021-12-31 13:21 Uwe Brauer
2021-12-31 13:58 ` Eric S Fraga
2022-01-04 10:00 ` Max Nikulin
0 siblings, 2 replies; 5+ messages in thread
From: Uwe Brauer @ 2021-12-31 13:21 UTC (permalink / raw)
To: emacs-orgmode
Hi
Does anybody know about a function that would convert between
date format like 31.12.2021 to <2020-12-31> and back?
Thanks
Uwe Brauer
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: ascii-timestamps like 31.12.2021 to iso(org) format <2020-12-31> and back
2021-12-31 13:21 ascii-timestamps like 31.12.2021 to iso(org) format <2020-12-31> and back Uwe Brauer
@ 2021-12-31 13:58 ` Eric S Fraga
2021-12-31 16:05 ` Uwe Brauer
2022-01-04 10:00 ` Max Nikulin
1 sibling, 1 reply; 5+ messages in thread
From: Eric S Fraga @ 2021-12-31 13:58 UTC (permalink / raw)
To: emacs-orgmode
On Friday, 31 Dec 2021 at 14:21, Uwe Brauer wrote:
> ⚠️ Caution: External sender
>
>
> Hi
>
> Does anybody know about a function that would convert between
> date format like 31.12.2021 to <2020-12-31> and back?
This is Emacs, of course, so you could use query-replace-regexp (M-%)
with, for instance
\([0-9][0-9]\)\.\([0-9][0-9]\)\.\([0-9]\{4\}\)
as the pattern to search for and
<\3-\2-\1>
as the replacement. The converse is left as an exercise for the
reader. ;-)
--
: Eric S Fraga, with org release_9.5.2-289-gce75d2 in Emacs 29.0.50
: Latest paper written in org: https://arxiv.org/abs/2106.05096
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: ascii-timestamps like 31.12.2021 to iso(org) format <2020-12-31> and back
2021-12-31 13:58 ` Eric S Fraga
@ 2021-12-31 16:05 ` Uwe Brauer
2021-12-31 16:40 ` Eric S Fraga
0 siblings, 1 reply; 5+ messages in thread
From: Uwe Brauer @ 2021-12-31 16:05 UTC (permalink / raw)
To: emacs-orgmode
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>>> "ESF" == Eric S Fraga <e.fraga@ucl.ac.uk> writes:
> On Friday, 31 Dec 2021 at 14:21, Uwe Brauer wrote:
>> ⚠️ Caution: External sender
>>
>>
>> Hi
>>
>> Does anybody know about a function that would convert between
>> date format like 31.12.2021 to <2020-12-31> and back?
> This is Emacs, of course, so you could use query-replace-regexp (M-%)
> with, for instance
> \([0-9][0-9]\)\.\([0-9][0-9]\)\.\([0-9]\{4\}\)
> as the pattern to search for and
> <\3-\2-\1>
> as the replacement. The converse is left as an exercise for the
> reader. ;-)
Thanks the \{4\} surprise me. I tried
(query-replace-regexp "\\(\\<[0-9]*\\)\\([\\.]\\)\\([0-9]*\\>\\)" "\\3\\2\\1")
And that did not work.
Uwe
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^ permalink raw reply [flat|nested] 5+ messages in thread* Re: ascii-timestamps like 31.12.2021 to iso(org) format <2020-12-31> and back
2021-12-31 16:05 ` Uwe Brauer
@ 2021-12-31 16:40 ` Eric S Fraga
0 siblings, 0 replies; 5+ messages in thread
From: Eric S Fraga @ 2021-12-31 16:40 UTC (permalink / raw)
To: emacs-orgmode
On Friday, 31 Dec 2021 at 17:05, Uwe Brauer wrote:
> Thanks the \{4\} surprise me. I tried
>
> (query-replace-regexp "\\(\\<[0-9]*\\)\\([\\.]\\)\\([0-9]*\\>\\)" "\\3\\2\\1")
Not sure what this is trying to do. If it's going from <2021-12-31> to 31.12.2021, you shouldn't escape the < or >, you are not matching the -, and there are only 2 number matches. Maybe you want
<\\([0-9]+\\)-\\([0-9]+\\)-\\([0-9]+\\)>
to
\\3.\\2.\\1
?
--
: Eric S Fraga, with org release_9.5.2-289-gce75d2 in Emacs 29.0.50
: Latest paper written in org: https://arxiv.org/abs/2106.05096
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: ascii-timestamps like 31.12.2021 to iso(org) format <2020-12-31> and back
2021-12-31 13:21 ascii-timestamps like 31.12.2021 to iso(org) format <2020-12-31> and back Uwe Brauer
2021-12-31 13:58 ` Eric S Fraga
@ 2022-01-04 10:00 ` Max Nikulin
1 sibling, 0 replies; 5+ messages in thread
From: Max Nikulin @ 2022-01-04 10:00 UTC (permalink / raw)
To: emacs-orgmode
On 31/12/2021 20:21, Uwe Brauer wrote:
>
> Does anybody know about a function that would convert between
> date format like 31.12.2021 to <2020-12-31> and back?
Uwe, I suggest you to create a feature request at
https://debbugs.gnu.org for emacs to add a function similar to strptime
that can parse date-time string accordingly to given format, see
info "(libc) Low-Level Time String Parsing"
https://www.gnu.org/software/libc/manual/html_node/Low_002dLevel-Time-String-Parsing.html
Actually, I suppose, you need a function that parses date accordingly to
current locale. It can be added to the feature request as well (and Eli
will say that since Emacs is a multilingual editor, there is no well
defined "current locale").
^ permalink raw reply [flat|nested] 5+ messages in thread
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2021-12-31 13:21 ascii-timestamps like 31.12.2021 to iso(org) format <2020-12-31> and back Uwe Brauer
2021-12-31 13:58 ` Eric S Fraga
2021-12-31 16:05 ` Uwe Brauer
2021-12-31 16:40 ` Eric S Fraga
2022-01-04 10:00 ` Max Nikulin
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