Add support for value-colon (#1753)

src/printer.js

@@ -2632,6 +2632,12 @@ function genericPrintNoParens(path, options, print, args) {
         if (i === 0 && n.groups[i].type === "value-operator") {
           continue;
         }
+        if (
+          (i + 1 < n.groups.length && n.groups[i + 1].type === "value-colon") ||
+          n.groups[i].type === "value-colon"
+        ) {
+          continue;
+        }
         if (i !== n.groups.length - 1) {
           parts.push(line);
         }
@@ -2692,6 +2698,9 @@ function genericPrintNoParens(path, options, print, args) {
     case "value-word": {
       return n.value;
     }
+    case "value-colon": {
+      return n.value;
+    }
     case "value-comma": {
       return concat([n.value, " "]);
     }

tests/css_colon/__snapshots__/jsfmt.spec.js.snap

@@ -0,0 +1,12 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`colon.css 1`] = `
+div {
+  filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=3);
+}
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+div {
+  filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=3);
+}
+
+`;

tests/css_colon/colon.css

@@ -0,0 +1,3 @@
+div {
+  filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=3);
+}

tests/css_colon/jsfmt.spec.js

@@ -0,0 +1 @@
+run_spec(__dirname, { parser: "postcss" });