Merge branch 'css-nesting' of github.com:AlbertMarashi/svelte into pr/9549

Author: Rich-Harris

packages/svelte/tests/css/samples/nested-css/expected.css

@@ -29,17 +29,22 @@
 		& .b:where(.svelte-xyz) {
 			color: green;
 
-			/* (empty) .c:where(.svelte-xyz) {
+			.c:where(.svelte-xyz) {
 				& & {
 					color: red;
 				}
-			}*/
+			}
 		}
 
 		& & {
 			color: green;
 		}
 
+		/* silly but valid */
+		&& {
+			color: rebeccapurple;
+		}
+
 		.container:where(.svelte-xyz) & {
 			color: green;
 		}

packages/svelte/tests/css/samples/nested-css/input.svelte

@@ -54,6 +54,11 @@
 			color: green;
 		}
 
+		/* silly but valid */
+		&& {
+			color: rebeccapurple;
+		}
+
 		.container & {
 			color: green;
 		}