PageCuration should be using Title::isKnown() instead of Title::exists().

Confirmed that these are usually bluelinks instead of redlinks outside of PageTriage (I just tested in a sandbox). Legoktm's comment above looks like a good hint of what to look for in the code.

Title::exists does not show up in a search of the codebase.

In the PageTriage code, the front end uses custom code to make the title links, based on what is fed to it by the API by the creator_user_page_exist parameter.

JavaScript

this.model.buildLinkTag(
	this.model.get( 'creator_user_page_url' ),
	this.model.get( 'user_name' ),
	this.model.get( 'creator_user_page_exist' )
),

buildLinkTag: function ( url, text, exists ) {
	let style = '';
	if ( !exists ) {
		url = this.buildRedLink( url, exists );
		style = 'new';
	}
	return $( '<a>' )
		.attr( {
			href: url,
			class: style
		} )
		.text( text );
},

buildRedLink: function ( url, exists ) {
	url = new mw.Uri( url );
	if ( !exists ) {
		url.query.action = 'edit';
		url.query.redlink = 1;
	}
	return url.toString();
},

PHP

$metaData[$page][ApiResult::META_BC_BOOLS] = [
	'creator_user_page_exist', 'creator_user_talk_page_exist',
	'reviewer_user_page_exist', 'reviewer_user_talk_page_exist',
];

API sandbox example of pagetriagelist API:

I'm not sure where creator_user_page_exist is coming from. Where the variable is assigned is not showing up in a search of the codebase for that keyword.

I was hoping this was an easy fix, but this looks a bit elaborate. So I'll stop here for now.

In T134073#8646726, @Novem_Linguae wrote:

Title::exists does not show up in a search of the codebase.

In the PageTriage code, the front end uses custom code to make the title links, based on what is fed to it by the API by the creator_user_page_exist parameter.

JavaScript

this.model.buildLinkTag(
	this.model.get( 'creator_user_page_url' ),
	this.model.get( 'user_name' ),
	this.model.get( 'creator_user_page_exist' )
),

buildLinkTag: function ( url, text, exists ) {
	let style = '';
	if ( !exists ) {
		url = this.buildRedLink( url, exists );
		style = 'new';
	}
	return $( '<a>' )
		.attr( {
			href: url,
			class: style
		} )
		.text( text );
},

buildRedLink: function ( url, exists ) {
	url = new mw.Uri( url );
	if ( !exists ) {
		url.query.action = 'edit';
		url.query.redlink = 1;
	}
	return url.toString();
},

PHP

$metaData[$page][ApiResult::META_BC_BOOLS] = [
	'creator_user_page_exist', 'creator_user_talk_page_exist',
	'reviewer_user_page_exist', 'reviewer_user_talk_page_exist',
];

API sandbox example of pagetriagelist API:

I'm not sure where creator_user_page_exist is coming from. Where the variable is assigned is not showing up in a search of the codebase for that keyword.

I was hoping this was an easy fix, but this looks a bit elaborate. So I'll stop here for now.

It's coming from createUserInfo which uses Title::makeTitle():

private function createUserInfo( $userName, $userPageStatus, $prefix ) {
		$userPage = Title::makeTitle( NS_USER, $userName );
		$userTalkPage = Title::makeTitle( NS_USER_TALK, $userName );
		$userContribsPage = SpecialPage::getTitleFor( 'Contributions', $userName );

		return [
			$prefix . '_user_page' => $userPage->getPrefixedText(),
			$prefix . '_user_page_url' => $userPage->getFullURL(),
			$prefix . '_user_page_exist' => isset( $userPageStatus[$userPage->getPrefixedDBkey()] ),
			$prefix . '_user_talk_page' => $userTalkPage->getPrefixedText(),
			$prefix . '_user_talk_page_url' => $userTalkPage->getFullURL(),
			$prefix . '_user_talk_page_exist' => isset( $userPageStatus[$userTalkPage->getPrefixedDBkey()] ),
			$prefix . '_contribution_page' => $userContribsPage->getPrefixedText(),
			$prefix . '_contribution_page_url' => $userContribsPage->getFullURL(),
		];
	}

I think the relevant code we need to update is in PageTriageUtil::pageStatusForUser. I believe this code could be simplified to get the reviewer and author for each entry, call Title::isKnown(). I am not sure there is a need for the custom cache and DB queries being made in that code.

Change 892383 had a related patch set uploaded (by Kosta Harlan; author: Kosta Harlan):

[mediawiki/extensions/PageTriage@master] [WIP] PageTriageUtil: Simplifiy getPageStatusForUsers

https://gerrit.wikimedia.org/r/892383

Change 892383 abandoned by Kosta Harlan:

[mediawiki/extensions/PageTriage@master] [WIP] PageTriageUtil: Simplify getPageStatusForUsers

Reason:

https://gerrit.wikimedia.org/r/892383

Noting that this is also the case at https://en.wikipedia.org/wiki/Special:NewPagesFeed:

perhaps worth noting that it shows this screen when clicking on the redlink: