Change Details

For reference see {T383216} and the work done in [1] **Implementation details:** [] Use the code introduced in [1] to handle backlink marker symbols in Parsoid [] Should be backwards compatible with the current mechanism where a i18n message is used and use the same feature flag [] Add tests [1] https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Cite/+/1111359

For reference see {T383216} and the work done in [1] **Implementation details:** [x] Adapt the code introduced in [1] to be reusable between Parsoid and the legacy parser. [] Should be backwards compatible with the current mechanism where a i18n message is used: the PHP configuration feature flag will switch between numeric+legacy-i18n backlink markers, or the entirely new mechanism. [] Add tests [1] https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Cite/+/1111359

For reference see {T383216} and the work done in [1] **Implementation details:** [] Usex] Adapt the code introduced in [1] to handbe reusable backlink marker symbols in Parsoidetween Parsoid and the legacy parser. [] Should be backwards compatible with the current mechanism where a i18n message is used and use the same feature flag: the PHP configuration feature flag will switch between numeric+legacy-i18n backlink markers, or the entirely new mechanism. [] Add tests [1] https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Cite/+/1111359