Preserve empty lines after function calls in parenthesized values (#19960)

changelog_unreleased/css/19960.md

@@ -0,0 +1,33 @@
+#### Preserve empty lines after function calls in parenthesized values (#19960 by @kovsu)
+
+<!-- prettier-ignore -->
+```css
+/* Input */
+a {
+  background: linear-gradient(
+    to right,
+    rgba(0, 0, 0, 0.5) calc(50% - 1px),
+
+    transparent calc(50% + 1px)
+  );
+}
+
+/* Prettier stable */
+a {
+  background: linear-gradient(
+    to right,
+    rgba(0, 0, 0, 0.5) calc(50% - 1px),
+    transparent calc(50% + 1px)
+  );
+}
+
+/* Prettier main */
+a {
+  background: linear-gradient(
+    to right,
+    rgba(0, 0, 0, 0.5) calc(50% - 1px),
+
+    transparent calc(50% + 1px)
+  );
+}
+```