--- /dev/null
+# media-query-list-comma-newline-before
+
+Require a newline or disallow whitespace before the commas of media query lists.
+
+```css
+ @media screen and (color)
+ , projection and (color) {}
+/** ↑
+ * These commas */
+```
+
+## Options
+
+`string`: `"always"|"always-multi-line"|"never-multi-line"`
+
+### `"always"`
+
+There *must always* be a newline before the commas.
+
+The following patterns are considered violations:
+
+```css
+@media screen and (color), projection and (color) {}
+```
+
+```css
+@media screen and (color),
+projection and (color) {}
+```
+
+The following patterns are *not* considered violations:
+
+```css
+@media screen and (color)
+,projection and (color) {}
+```
+
+```css
+@media screen and (color)
+,
+projection and (color) {}
+```
+
+### `"always-multi-line"`
+
+There *must always* be a newline before the commas in multi-line media query lists.
+
+The following patterns are considered violations:
+
+```css
+@media screen and (color),
+projection and (color) {}
+```
+
+The following patterns are *not* considered violations:
+
+```css
+@media screen and (color), projection and (color) {}
+```
+
+```css
+@media screen and (color)
+,projection and (color) {}
+```
+
+```css
+@media screen and (color)
+,
+projection and (color) {}
+```
+
+### `"never-multi-line"`
+
+There *must never* be whitespace before the commas in multi-line media query lists.
+
+The following patterns are considered violations:
+
+```css
+@media screen and (color)
+,projection and (color) {}
+```
+
+```css
+@media screen and (color)
+,
+projection and (color) {}
+```
+
+The following patterns are *not* considered violations:
+
+```css
+@media screen and (color), projection and (color) {}
+```
+
+```css
+@media screen and (color),
+projection and (color) {}
+```