fix func postfixer

package.json

@@ -8,7 +8,7 @@
   },
   "scripts": {
     "start": "node cli.js",
-    "stop": "tape test/*.js | faucet",
+    "stop": "tape test/2-postfixer.js | faucet",
     "test": "standard && tape test/*.js | faucet"
   },
   "repository": {

postfixer.js

@@ -63,7 +63,8 @@ exports = module.exports = function toPostfixNotation (exp) {
         removeFunction()
         continue
       } else if (cur === ',') {
-
+        removeComma()
+        continue
       }
     }
 
@@ -150,6 +151,20 @@ exports = module.exports = function toPostfixNotation (exp) {
     skip = null
   }
 
+  function removeComma () {
+    out.push(token)
+    while (stack.length > 0) {
+      var o = stack.pop()
+      if (o.substr(o.length - MATH_EP.length) === MATH_EP) {
+        stack.push(o)
+        break
+      } else {
+        out.push(o)
+      }
+    }
+    token = ''
+  }
+
   function enableNega () {
     setNega(true)
   }

test/2-postfixer.js

@@ -32,6 +32,7 @@ test('infix to postfix test', function (t) {
 test('func: infix to postfix test', function (t) {
   t.equal(postfixer('abs(1 - 2)'), '. 1 2 - abs.')
   t.equal(postfixer('min(10, 20, 30)'), '. 10 20 30 min.')
+  t.equal(postfixer('max(10, 20 + 5, 30 - 40)'), '. 10 20 5 + 30 40 - max.')
   // t.equal(postfixer('1 + 2 * 3'), '1 2 3 * +')
   // t.equal(postfixer('(1 + 2) * 3'), '1 2 + 3 *')
   // t.equal(postfixer('(abs[1] + 2) * 3 + E'), 'abs[1] 2 + 3 * E +')

test/4-func.js

@@ -4,10 +4,12 @@ var app = require('../app')
 test('func - postfix test', function (t) {
   t.equal(app('1 3 +'), 4)
 
-  t.equal(app('. 3 0 -2 19 min.'), -2)
+  t.equal(app('. 3 0 -2 10 - 19 min.'), -12)
 
   t.equal(app('. 3 0 -2 19 max.'), 19)
 
+  t.equal(app('. 3 20 + 0 -2 19 max.'), 23)
+
   t.equal(app('. -1 abs. 10 +'), 11)
 
   t.equal(app('. 2 . 2 3 pow. - max.'), -6)