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@@ -123,7 +123,13 @@ export default class RestrictedEditingEditing extends Plugin {
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return;
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return;
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}
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}
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- for ( const viewElement of editor.editing.mapper.markerNameToElements( marker.name ) ) {
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+ const markerNameToElements = editor.editing.mapper.markerNameToElements( marker.name );
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+
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+ if ( !markerNameToElements ) {
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+ return;
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+ }
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+
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+ for ( const viewElement of markerNameToElements ) {
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writer.addClass( HIGHLIGHT_CLASS, viewElement );
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writer.addClass( HIGHLIGHT_CLASS, viewElement );
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highlightedMarkers.add( viewElement );
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highlightedMarkers.add( viewElement );
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}
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}
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