handle a space at the end of the template name

src/modules/core.js

@@ -1732,7 +1732,9 @@
 			const uniqueBanners = [];
 			const bannerMap = {};
 			banners.forEach( ( banner ) => {
-				const bannerKey = banner.toLowerCase().match( /{{[^|}]+/ )[ 0 ];
+				let bannerKey = banner.toLowerCase().match( /{{[^|}]+/ )[ 0 ];
+				// get rid of whitespace at the end of the template name
+				bannerKey = bannerKey.trim();
 				if ( !bannerMap[ bannerKey ] ) {
 					uniqueBanners.push( banner );
 					bannerMap[ bannerKey ] = true;

tests/test-core.js

@@ -454,4 +454,15 @@ describe( 'AFCH.removeDuplicateBanners', () => {
 			'{{WikiProject Ontario}}'
 		] );
 	} );
+
+	it( 'should handle a space at the end of the template name', () => {
+		const banners = [
+			'{{WikiProject Military history |Indian-task-force=yes}}',
+			'{{WikiProject Military history}}'
+		];
+		const output = AFCH.removeDuplicateBanners( banners );
+		expect( output ).toEqual( [
+			'{{WikiProject Military history |Indian-task-force=yes}}'
+		] );
+	} );
 } );