--- /dev/null
+# value-list-comma-newline-after
+
+Require a newline or disallow whitespace after the commas of value lists.
+
+```css
+a { background-size: 0,
+ 0; } ↑
+/** ↑
+ * The newline after these commas */
+```
+
+## Options
+
+`string`: `"always"|"always-multi-line"|"never-multi-line"`
+
+### `"always"`
+
+There *must always* be a newline after the commas.
+
+The following patterns are considered violations:
+
+```css
+a { background-size: 0,0; }
+```
+
+```css
+a { background-size: 0
+ , 0; }
+```
+
+The following patterns are *not* considered violations:
+
+```css
+a { background-size: 0,
+ 0; }
+```
+
+### `"always-multi-line"`
+
+There *must always* be a newline after the commas in multi-line value lists.
+
+The following patterns are considered violations:
+
+```css
+a { background-size: 0
+ , 0; }
+```
+
+The following patterns are *not* considered violations:
+
+```css
+a { background-size: 0, 0; }
+```
+
+```css
+a { background-size: 0,0; }
+```
+
+```css
+a { background-size: 0,
+ 0; }
+```
+
+### `"never-multi-line"`
+
+There *must never* be whitespace after the commas in multi-line value lists.
+
+The following patterns are considered violations:
+
+```css
+a { background-size: 0
+ , 0; }
+```
+
+The following patterns are *not* considered violations:
+
+```css
+a { background-size: 0,0; }
+```
+
+```css
+a { background-size: 0, 0; }
+```
+
+```css
+a { background-size: 0
+ ,0; }
+```