Fix formatting of lists in SCSS property/variable values (#5710)

src/language-css/printer-postcss.js

@@ -625,19 +625,9 @@ function genericPrint(path, options, print) {
           continue;
         }
 
-        // Ignore inline comment, they already contain newline at end (i.e. `// Comment`)
         // Add `hardline` after inline comment (i.e. `// comment\n foo: bar;`)
-        const isInlineComment = isInlineValueCommentNode(iNode);
-
-        if (
-          (iPrevNode && isInlineValueCommentNode(iPrevNode)) ||
-          isInlineComment ||
-          isInlineValueCommentNode(iNextNode)
-        ) {
-          if (isInlineComment) {
-            parts.push(hardline);
-          }
-
+        if (isInlineValueCommentNode(iNode)) {
+          parts.push(hardline);
           continue;
         }
 

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

@@ -699,11 +699,19 @@ $my-list:
   'foo', // Foo
   'bar'; // Bar
 
+$my-list2:
+  a // a
+  b
+  c;
+
 =====================================output=====================================
 $my-list: "foo",
   // Foo
     "bar"; // Bar
 
+$my-list2: a // a
+  b c;
+
 ================================================================================
 `;
 

tests/css_comments/lists.scss

@@ -1,3 +1,8 @@
 $my-list:
   'foo', // Foo
   'bar'; // Bar
+
+$my-list2:
+  a // a
+  b
+  c;