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mediawiki/resources/src/mediawiki.action/mediawiki.action.view.redirectToFragment.js
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mediawiki.action.view.redirectToFragment.js
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			/*!
			* JavaScript to scroll the page to an id, when a redirect with fragment is viewed.
			*/
			( function ( mw, $ ) {
			var profile = $.client.profile(),
			fragment = mw.config.get( 'wgRedirectToFragment' );

			if ( fragment === null ) {
			// nothing to do
			return;
			}

			if ( profile.layout === 'webkit' && profile.layoutVersion < 420 ) {
			// Released Safari w/ WebKit 418.9.1 messes up horribly
			// Nightlies of 420+ are ok
			return;
			}
			if ( !window.location.hash ) {
			window.location.hash = fragment;

			// Mozilla needs to wait until after load, otherwise the window doesn't
			// scroll. See <https://bugzilla.mozilla.org/show_bug.cgi?id=516293>.
			// There's no obvious way to detect this programmatically, so we use
			// version-testing. If Firefox fixes the bug, they'll jump twice, but
			// better twice than not at all, so make the fix hit future versions as
			// well.
			if ( profile.layout === 'gecko' ) {
			$( function () {
			if ( window.location.hash === fragment ) {
			window.location.hash = fragment;
			}
			} );
			}
			}
			}( mediaWiki, jQuery ) );