Fixed bug with split operator

core/modules/filters/strings.js

@@ -35,7 +35,7 @@ exports.concat = makeStringBinaryOperator(
 );
 
 exports.split = makeStringBinaryOperator(
-	function(a,b) {return [("" + a).split(b)];}
+	function(a,b) {return ("" + a).split(b);}
 );
 
 exports.join = makeStringArrayOperator(

editions/test/tiddlers/tests/test-filters.js

@@ -367,6 +367,7 @@ describe("Filter tests", function() {
 		expect(wiki.filterTiddlers("John Paul George Ringo +[lowercase[]]").join(",")).toBe("john,paul,george,ringo");
 		expect(wiki.filterTiddlers("John Paul George Ringo +[concat[y]]").join(",")).toBe("Johny,Pauly,Georgey,Ringoy");
 		expect(wiki.filterTiddlers("John Paul George Ringo +[split[]]").join(",")).toBe("J,o,h,n,P,a,u,l,G,e,o,r,g,e,R,i,n,g,o");
+		expect(wiki.filterTiddlers("John Paul George Ringo +[split[e]]").join(",")).toBe("John,Paul,G,org,,Ringo");
 		expect(wiki.filterTiddlers("John Paul George Ringo +[join[ ]split[e]join[ee]split[ ]]").join(",")).toBe("John,Paul,G,org,,Ringo");
 		expect(wiki.filterTiddlers("[[ John ]] [[Paul ]] [[ George]] Ringo +[trim[]join[-]]").join(",")).toBe("John-Paul-George-Ringo");
 	});