don't fail on empty arguments (fixes #317)

css · Oct 25, 2016 · 59b596d · 59b596d
1 parent c382cf5
commit 59b596d
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Showing 3 changed files with 13 additions and 1 deletion.
diff --git a/lib/parser/index.js b/lib/parser/index.js
@@ -1079,7 +1079,14 @@ function getFunctionArguments(scope) {
                 break;
 
             case TokenType.Comma:
-                removeTrailingSpaces(argument.sequence);
+                if (argument) {
+                    removeTrailingSpaces(argument.sequence);
+                } else {
+                    args.insert(List.createItem({
+                        type: 'Argument',
+                        sequence: new List()
+                    }));
+                }
                 scanner.next();
                 readSC();
                 argument = null;

diff --git a/test/fixture/compress/issue/317.css b/test/fixture/compress/issue/317.css
@@ -0,0 +1,4 @@
+.test {
+    background: -webkit-gradient(linear, left top, left bottom, from(rgba(0, 0, 0, .2)), to(rgba(0, 0, 0, 0)));
+    -webkit-mask-box-image: -webkit-gradient(linear, left top, right top, color-stop(, rgba(0, 0, 0, 0)), color-stop(.5, rgba(0, 0, 0, .8)), color-stop(1, rgba(0, 0, 0, 0)))
+}
diff --git a/test/fixture/compress/issue/317.min.css b/test/fixture/compress/issue/317.min.css