Hmm I still suggest voting on this topic, as there's users that aganist using "，"

I think that Cantonese Wikipedia, Wuu Wikipedia and Gan Wikipedia should also make the change.

In T170656#3451545, @Dabao_qian wrote:

I think that Cantonese Wikipedia, Wuu Wikipedia and Gan Wikipedia should also make the change.

That's why I changed title as "in languages that use ideographic characters" (hey, ideographic characters can have Japanese and Korean, are both users notified?)

I believe that the most useful case here is the ideographic comma "、", used in Chinese for connecting a list of items. (The other comma "，" is mainly for chunks of senstences.) Anyone using the other comma in a list of items need to serious consider what that ， thing is and how they are ruining the language. It really looks like people are forgetting about the 、 comma and the ； semicolon, using ， all the time instead. (Sorry for some rants here.)

Also, I believe that this bug, affects Japanese too. That language may find intetpunct a better list delimiter.

The bug should better be blamed on the anglocentric word choice of "comma", as there really are languages that have a "listing comma" and a "sentence comma". Let's call it a documentation bug, write it somewhere that this one is only used for list elements, and call it a day.

I think this task can be closed as Invalid (as in case the problem can be locally handled) because of suggestion from https://www.wikidata.org/wiki/Module:I18n/linguistic:

	comma = {
		message = 'comma-separator'
	},
	citation_comma = {
		zh = '，',  -- in Chinese the commas used in citation aren't '、'
		["zh-cn"] = '，',
		["zh-hans"] = '，',
		["zh-hant"] = '，',
		["zh-hk"] = '，',
		["zh-mo"] = '，',
		["zh-sg"] = '，',
		["zh-tw"] = '，',
		message = 'comma-separator'
	},

Agreed. We can use "、" as the standard comma-separator, and let modules define exceptions.

While most cases of "comma-separator" use are for list of items, the MIME case is unfortunately more like a list of sub-clauses.

The code that produces this behavior is the specialized GIFHandler::GetLongDesc() function, which ends with a call to $wgLang->commaList at https://github.com/wikimedia/mediawiki/blob/44bb3dd389d630a1fa573731cfa2fa054698faff/includes/media/GIFHandler.php#L189C10-L189C28. The same issue affects PNGHandler.