Support create variables on the filter line.

src/filter.js

@@ -36,7 +36,9 @@ module.exports = function(options) {
 
             var args = [];
             while(match = valueRE.exec(argList.trim())){
-                args.push(match[0]);
+                var v = match[0];
+                var re = new RegExp(`${v}\\s*:`, 'g');
+                re.test(match.input) ? args.push(`'${v}'`) : args.push(v);
             }
 
             this.name = name;

src/lexical.js

@@ -37,7 +37,7 @@ var rangeLine = new RegExp(`^${rangeCapture.source}$`);
 var integerLine = new RegExp(`^${integer.source}$`);
 
 // filter related
-var valueList = new RegExp(`${value.source}(\\s*,\\s*${value.source})*`);
+var valueList = new RegExp(`${value.source}(\\s*,?:?\\s*${value.source})*`);
 var filter = new RegExp(`${identifier.source}(?:\\s*:\\s*${valueList.source})?`, 'g');
 var filterCapture = new RegExp(`(${identifier.source})(?:\\s*:\\s*(${valueList.source}))?`);
 var filterLine = new RegExp(`^${filterCapture.source}$`);

test/filters.js

@@ -327,4 +327,9 @@ describe('filters', function() {
         it('should encode <space>',
             () => test('{{ "Tetsuro Takara" | url_encode }}', 'Tetsuro%20Takara'));
     });
+
+    describe('obj_test', function() {
+        liquid.registerFilter('obj_test', (...v) => v.join(','));
+        it('should support object', () => test('{{ "a" | obj_test: k1: "v1", k2: "v2" }}', 'a,k1,v1,k2,v2'));
+    });
 });

test/lexical.js

@@ -11,7 +11,9 @@ describe('lexical', function() {
         lexical.filterLine.test('foo: a, "b"').should.equal(true);
         lexical.filterLine.test('abs | another').should.equal(false);
         lexical.filterLine.test('join: "," | another').should.equal(false);
+        lexical.filterLine.test('obj_test: k1: "v1", k2: "v2"').should.equal(true);
     });
+
     it('should test boolean literal', function() {
         lexical.isLiteral('true').should.equal(true);
         lexical.isLiteral('TrUE').should.equal(true);