Preserve nested object indentation in multi-line set tags

src/printer/print/liquid.ts

@@ -370,10 +370,11 @@ export function printLiquidBlockStart(
   }
 
   if (lines.length > 1) {
+    const reindentedLines = reindent(lines, true);
     return group([
       '{%',
       whitespaceStart,
-      indent([hardline, node.name, ' ', join(hardline, lines.map(trim))]),
+      indent([hardline, node.name, ' ', join(hardline, reindentedLines)]),
       hardline,
       whitespaceEnd,
       '%}',

test/twig-set-object-indentation/fixed.liquid

@@ -0,0 +1,14 @@
+It should preserve nested object indentation in multi-line set tags
+{%
+  set defaultAttributes = {
+      id: null,
+      alt: null,
+      class: 'w-full h-full rounded-lg aspect-square object-cover border bg-neutral image-preview',
+      stimulus: {
+          controllers: {
+              target: 'target-name'
+          }
+      }
+  }
+%}
+

test/twig-set-object-indentation/index.liquid

@@ -0,0 +1,14 @@
+It should preserve nested object indentation in multi-line set tags
+{%
+set defaultAttributes = {
+    id: null,
+    alt: null,
+    class: 'w-full h-full rounded-lg aspect-square object-cover border bg-neutral image-preview',
+    stimulus: {
+        controllers: {
+            target: 'target-name'
+        }
+    }
+}
+%}
+

test/twig-set-object-indentation/index.spec.ts

@@ -0,0 +1,6 @@
+import { assertFormattedEqualsFixed } from '../test-helpers';
+import * as path from 'path';
+
+describe(`Unit: ${path.basename(__dirname)}`, () => {
+  assertFormattedEqualsFixed(__dirname);
+});