Implement collation-aware sorting
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	valhallasw
	May 25 2015, 8:37 AM

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e.g. https://cs.wikinews.org/w/index.php?title=Vy%C5%A1lo_t%C5%99et%C3%AD_vyd%C3%A1n%C3%AD_%C4%8Cesk%C3%A9ho_etymologick%C3%A9ho_slovn%C3%ADku&action=edit&section=2 should be sorted using the cs collation, so the correct sort order is

[[Kategorie:Česko]]
[[Kategorie:Čeština]]
[[Kategorie:Jazykověda]]
[[Kategorie:Jiří Rejzek]]
[[Kategorie:Knihy]]
[[Kategorie:Kultura]]
[[Kategorie:Věda a technika]]

which is not what you get with a naïve non-collation-aware sort (i.e. using unicode codepoint order).

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		Status	Subtype	Assigned	Task
		Declined		None	T100265 Implement collation-aware sorting
		Invalid		None	T195186 Add a method to get extended language code (like "en_US") for Site/Page

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See https://cs.wiktionary.org/wiki/Modul:Collation for the cs collation, but we should probably use pyicu or something like that.

Rough implementation on the sorting end:

>>> import icu
>>> locale = icu.Locale("cs_CZ")
>>> locale.getDisplayName()
u'Czech (Czech Republic)'
>>> collator = icu.Collator.createInstance(locale)
>>> list = """[[Kategorie:Česko]]
... [[Kategorie:Čeština]]
... [[Kategorie:Jazykověda]]
... [[Kategorie:Jiří Rejzek]]
... [[Kategorie:Knihy]]
... [[Kategorie:Kultura]]
... [[Kategorie:Věda a technika]]""".split("\n")
>>> print ', '.join(sorted(list))
[[Kategorie:Jazykověda]], [[Kategorie:Jiří Rejzek]], [[Kategorie:Knihy]], [[Kategorie:Kultura]], [[Kategorie:Věda a technika]], [[Kategorie:Česko]], [[Kategorie:Čeština]]
>>> print ', '.join(sorted(list, key=collator.getSortKey))
[[Kategorie:Česko]], [[Kategorie:Čeština]], [[Kategorie:Jazykověda]], [[Kategorie:Jiří Rejzek]], [[Kategorie:Knihy]], [[Kategorie:Kultura]], [[Kategorie:Věda a technika]]

But I'm confused by this one as well. As far as I can see, category.py doesn't sort at all...? it just adds sort keys for MW, as far as I can see.

valhallasw mentioned this in T100264: Cosmetic changes: sort template parameters.Jun 12 2015, 8:27 PM

Danny_B added a project: Pywikibot-i18n.Jan 22 2016, 3:39 PM

Restricted Application added a subscriber: StudiesWorld. · View Herald TranscriptJan 22 2016, 3:39 PM

Danny_B triaged this task as Medium priority.Jan 22 2016, 3:41 PM

Danny_B renamed this task from category.py: implement collation-aware sorting to Implement collation-aware sorting.Jun 3 2016, 2:01 AM

Danny_B added a project: Pywikibot-category.py.

Dvorapa mentioned this in T76298: Take main categories to top.Apr 20 2018, 6:50 PM

Dvorapa mentioned this in T195186: Add a method to get extended language code (like "en_US") for Site/Page.May 20 2018, 10:23 AM

Note that some sites can have special policies for the order of categories (e.g. in biographies), where this could not be applicable.

Dvorapa closed subtask T195186: Add a method to get extended language code (like "en_US") for Site/Page as Invalid.May 29 2018, 8:21 PM

• Vvjjkkii reopened subtask T195186: Add a method to get extended language code (like "en_US") for Site/Page as Open.Jul 1 2018, 1:09 AM