* Oops, typo in the last "search-replace" *
"[Thu],[7]" should be "[Sun],[7]"
The dangers of mindless cut and paste ...
On Saturday, September 11, 2021 at 12:49:23 AM UTC-3 Charlie Veniot wrote:
> G'day,
>
> Just to get the conversation started, try this in a new tiddler in some
> tiddlywiki:
>
> <$vars dateNow= <<now wYYYY-W0WW-ddd>>>
>
> {{{
> [<dateNow>search-replace:[Mon],[1]search-replace:[Tue],[2]search-replace:[Wed],[3]search-replace:[Thu],[4]search-replace:[Fri],[5]search-replace:[Sat],[6]search-replace:[Thu],[7]]
>
> }}}
>
> </$vars>
>
> On Thursday, September 9, 2021 at 4:57:30 PM UTC-3 J N wrote:
>
>> A correction of the example given for a week date in TiddlyWiki is that
>> the template should use the wYYYY token for the ISO week-numbering year,
>> not YYYY, since weeks may cross the traditional year boundary with some
>> days of the week falling outside the year the week belongs to. It is a bit
>> surprising that the final element of the week day number is missing when
>> the other parts of the ISO standard are supported.
>>
>> torsdag 9 september 2021 kl. 21:31:46 UTC+2 skrev J N:
>>
>>> I would like to use the ISO week date format for the title of new
>>> journal tiddlers and elsewhere, since I find it practical to be aware of
>>> the week day in combination with a sortable date format.
>>>
>>> https://en.wikipedia.org/wiki/ISO_8601#Week_dates
>>> YYYY-Www-D or YYYYWwwD
>>>
>>> E.g. 2021-w36-4 for thursday of week 36, 2021-09-09.
>>>
>>> I can not see a way to get the week day number in the built in date
>>> format tokens.
>>>
>>> https://tiddlywiki.com/#DateFormat
>>>
>>> The closest I've got is YYYY-W0WW-ddd, but that renders as 2021-W36-Thu,
>>> which will not sort alphanumerically in date order like an ISO date would.
>>>
>>> I can see that the template tokens are implemented in a system tiddler
>>> named $:/core/modules/utils/utils.js.
>>>
>>> Getting the day of week is trivial in JavaScript, e.g. adding a token
>>> matching a single "D" for this:
>>>
>>> [/^D/, function() {
>>> return date.getDay() || 7;
>>> }]
>>>
>>> The utils.js tiddler seems to contain a lot of other stuff however, and
>>> I guess local changes would have to be merged on achieving updates of
>>> TiddlyWiki.
>>>
>>> Maybe there are other ways to achieve custom date formatting of this
>>> kind in TiddlyWiki?
>>>
>>
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