diff --git a/src/lint/linter/xhpast/rules/ArcanistParenthesesSpacingXHPASTLinterRule.php b/src/lint/linter/xhpast/rules/ArcanistParenthesesSpacingXHPASTLinterRule.php
--- a/src/lint/linter/xhpast/rules/ArcanistParenthesesSpacingXHPASTLinterRule.php
+++ b/src/lint/linter/xhpast/rules/ArcanistParenthesesSpacingXHPASTLinterRule.php
@@ -18,10 +18,11 @@
       'n_ARRAY_VALUE_LIST',
       'n_ASSIGNMENT_LIST',
       'n_CALL_PARAMETER_LIST',
-      'n_DECLARATION_PARAMETER_LIST',
       'n_CONTROL_CONDITION',
+      'n_DECLARATION_PARAMETER_LIST',
       'n_FOR_EXPRESSION',
       'n_FOREACH_EXPRESSION',
+      'n_LEXICAL_VARIABLE_LIST',
     ));
 
     foreach ($all_paren_groups as $group) {
diff --git a/src/lint/linter/xhpast/rules/ArcanistVariableReferenceSpacingXHPASTLinterRule.php b/src/lint/linter/xhpast/rules/ArcanistVariableReferenceSpacingXHPASTLinterRule.php
--- a/src/lint/linter/xhpast/rules/ArcanistVariableReferenceSpacingXHPASTLinterRule.php
+++ b/src/lint/linter/xhpast/rules/ArcanistVariableReferenceSpacingXHPASTLinterRule.php
@@ -24,7 +24,9 @@
       if ($before) {
         $this->raiseLintAtOffset(
           head($before)->getOffset(),
-          pht('Variable references should not be prefixed with whitespace.'),
+          pht(
+            'For consistency, variable references should not be '.
+            'prefixed with whitespace.'),
           implode('', mpull($before, 'getValue')),
           '');
       }
diff --git a/src/lint/linter/xhpast/rules/__tests__/parentheses-spacing/closure.lint-test b/src/lint/linter/xhpast/rules/__tests__/parentheses-spacing/closure.lint-test
new file mode 100644
--- /dev/null
+++ b/src/lint/linter/xhpast/rules/__tests__/parentheses-spacing/closure.lint-test
@@ -0,0 +1,12 @@
+<?php
+
+$x = function ( $y) use ( $z) {
+  return $y + $z;
+};
+~~~~~~~~~~
+warning:3:16
+warning:3:26
+~~~~~~~~~~
+$x = function ($y ) use ($z ) {
+  return $y + $z;
+};