Quote (or don't quote) property values individually before joining

Instead of adding quotes to the delimiting comma and around the outside, quote the individual members separately if necessary.
This prevents the whole string of multiple values being quoted because of the presence of a delimiting comma.

When quotes are required (multiValueSeparateDQuote is true) only URIs are valid, which will get quoted due to the colon.
When not required only specific strings (WORK, VOICE, PARCEL, etc.) are valid, none of which need quotes.

lib/ical/design.js

@@ -193,7 +193,7 @@ let commonValues = {
 
 let icalParams = {
   // Although the syntax is DQUOTE uri DQUOTE, I don't think we should
-  // enfoce anything aside from it being a valid content line.
+  // enforce anything aside from it being a valid content line.
   //
   // At least some params require - if multi values are used - DQUOTEs
   // for each of its values - e.g. delegated-from="uri1","uri2"

lib/ical/stringify.js

@@ -118,18 +118,16 @@ stringify.property = function(property, designSet, noFold) {
     }
     let multiValue = (paramName in designSet.param) && designSet.param[paramName].multiValue;
     if (multiValue && Array.isArray(value)) {
-      if (designSet.param[paramName].multiValueSeparateDQuote) {
-        multiValue = '"' + multiValue + '"';
-      }
       value = value.map(stringify._rfc6868Unescape);
+      value = value.map(stringify.propertyValue);
       value = stringify.multiValue(value, multiValue, "unknown", null, designSet);
     } else {
       value = stringify._rfc6868Unescape(value);
+      value = stringify.propertyValue(value);
     }
 
 
-    line += ';' + paramName.toUpperCase();
-    line += '=' + stringify.propertyValue(value);
+    line += ';' + paramName.toUpperCase() + '=' + value;
   }
 
   if (property.length === 3) {
@@ -211,7 +209,6 @@ stringify.property = function(property, designSet, noFold) {
  * @return {String}           Given or escaped value when needed
  */
 stringify.propertyValue = function(value) {
-
   if ((unescapedIndexOf(value, ',') === -1) &&
       (unescapedIndexOf(value, ':') === -1) &&
       (unescapedIndexOf(value, ';') === -1)) {

test/stringify_test.js

@@ -173,5 +173,35 @@ suite('ICAL.stringify', function() {
 
       assert.equal(ICAL.stringify.component(subject), expected);
     });
+
+    test('multiple types unquoted', function() {
+      let subject = [
+        "vcard",
+        [
+          [
+            "adr",
+            {
+              type: ["dom", "home", "postal", "parcel"]
+            },
+            "text",
+            ["", "", "123 Main Street", "Any Town", "CA", "91921-1234"]
+          ],
+          [
+            "tel",
+            {
+              type: ["home", "voice"]
+            },
+            "phone-number",
+            "1234567"
+          ]
+        ]
+      ];
+      let expected =
+        "BEGIN:VCARD\r\n" +
+        "ADR;TYPE=dom,home,postal,parcel:;;123 Main Street;Any Town;CA;91921-1234\r\n" +
+        "TEL;TYPE=home,voice:1234567\r\n" +
+        "END:VCARD";
+      assert.equal(ICAL.stringify.component(subject), expected);
+    });
   });
 });