diff --git a/unified/extractor/src/languages/swift/swift.rs b/unified/extractor/src/languages/swift/swift.rs
index f80d5bacdf7e..2319beb62ca1 100644
--- a/unified/extractor/src/languages/swift/swift.rs
+++ b/unified/extractor/src/languages/swift/swift.rs
@@ -671,7 +671,8 @@ fn translation_rules() -> Vec<Rule<SwiftContext>> {
                 calledExpression: (arrayExpr
                     elements: (arrayElement expression: (genericSpecializationExpr) @element)) @@array
                 arguments: _* @args
-                trailingClosure: @tc)
+                trailingClosure: @tc
+                additionalTrailingClosures: _* @additional)
             =>
             call_expr {
                 let callee = tree_at!(
@@ -683,7 +684,8 @@ fn translation_rules() -> Vec<Rule<SwiftContext>> {
                 tree!((call_expr
                     callee: {callee}
                     argument: {args}
-                    argument: (argument value: {tc})))
+                    argument: (argument value: {tc})
+                    argument: {additional}))
             }
         ),
         rule!(
@@ -704,15 +706,15 @@ fn translation_rules() -> Vec<Rule<SwiftContext>> {
         ),
         // A function/method call (`foo(1, 2)`). `calledExpression` is the callee
         // and `arguments` is an (elided) list of `labeledExpr`, each translated
-        // to an `argument` below. A trailing closure (`xs.map { … }`) becomes a
-        // final unlabelled argument; that variant is matched first.
-        rule!(
-            (functionCallExpr calledExpression: @callee arguments: _* @args trailingClosure: @tc)
-            =>
-            (call_expr callee: {callee} argument: {args} argument: (argument value: {tc}))
-        ),
+        // to an `argument` below. A trailing closure (`xs.map { … }`) becomes
+        // a final unlabelled argument, followed by any additional labeled
+        // trailing closures.
         rule!(
-            (functionCallExpr calledExpression: @@rawCallee arguments: _* @args)
+            (functionCallExpr
+                calledExpression: @@rawCallee
+                arguments: _* @args
+                trailingClosure: _? @trailing
+                additionalTrailingClosures: _* @additional)
             =>
             expr {
                 // Always translate the callee in non-pattern context.
@@ -720,7 +722,12 @@ fn translation_rules() -> Vec<Rule<SwiftContext>> {
                     ctx.in_pattern = false;
                     ctx.translate(rawCallee)
                 })?;
-                tree!((call_expr callee: {callee} argument: {args}))
+                tree!((call_expr
+                    callee: {callee}
+                    argument: {args}
+                    argument: {trailing.map(|trailing| tree!((argument value: {trailing})))}
+                    argument: {additional}
+                ))
             }
         ),
         // A call or enum-case pattern argument.
@@ -1019,9 +1026,17 @@ fn translation_rules() -> Vec<Rule<SwiftContext>> {
         // subscripts their own shape needs only a `subscript_expr` node in
         // ast_types.yml and a remap here.
         rule!(
-            (subscriptCallExpr calledExpression: @callee arguments: _* @args)
+            (subscriptCallExpr
+                calledExpression: @callee
+                arguments: _* @args
+                trailingClosure: _? @trailing
+                additionalTrailingClosures: _* @additional)
             =>
-            (call_expr callee: {callee} argument: {args})
+            (call_expr
+                callee: {callee}
+                argument: {args}
+                argument: {trailing.map(|trailing| tree!((argument value: {trailing})))}
+                argument: {additional})
         ),
         // ---- Optionals and errors ----
         // Optional chaining — unwrap the marker
diff --git a/unified/extractor/tests/corpus/swift/control-flow/nested-enum-case-pattern.output b/unified/extractor/tests/corpus/swift/control-flow/nested-enum-case-pattern.output
index 95d0a5585dcc..ea814c00d53b 100644
--- a/unified/extractor/tests/corpus/swift/control-flow/nested-enum-case-pattern.output
+++ b/unified/extractor/tests/corpus/swift/control-flow/nested-enum-case-pattern.output
@@ -3,6 +3,8 @@ case let .received(.some(value), timestamp):
   print(value, timestamp)
 case Type.some(let value):
   print(value)
+case values?.map { $0 * 2 }:
+  break
 default:
   break
 }
@@ -138,6 +140,53 @@ sourceFile
                           calledExpression:
                             declReferenceExpr
                               baseName: identifier "print"
+                switchCase
+                  label:
+                    switchCaseLabel
+                      colon: :
+                      caseKeyword: case
+                      caseItems:
+                        switchCaseItem
+                          pattern:
+                            expressionPattern
+                              expression:
+                                functionCallExpr
+                                  arguments:
+                                  additionalTrailingClosures:
+                                  calledExpression:
+                                    memberAccessExpr
+                                      period: .
+                                      declName:
+                                        declReferenceExpr
+                                          baseName: identifier "map"
+                                      base:
+                                        optionalChainingExpr
+                                          expression:
+                                            declReferenceExpr
+                                              baseName: identifier "values"
+                                          questionMark: ?
+                                  trailingClosure:
+                                    closureExpr
+                                      leftBrace: {
+                                      rightBrace: }
+                                      statements:
+                                        codeBlockItem
+                                          item:
+                                            infixOperatorExpr
+                                              operator:
+                                                binaryOperatorExpr
+                                                  operator: binaryOperator "*"
+                                              leftOperand:
+                                                declReferenceExpr
+                                                  baseName: dollarIdentifier "$0"
+                                              rightOperand:
+                                                integerLiteralExpr
+                                                  literal: integerLiteral "2"
+                  statements:
+                    codeBlockItem
+                      item:
+                        breakStmt
+                          breakKeyword: break
                 switchCase
                   label:
                     switchDefaultLabel
@@ -159,7 +208,7 @@ top_level source="⟨body⟩"
   body:
     block source="⟨stmt⟩"
       stmt:
-        switch_expr source="switch ⟨value⟩ {\n⟨case⟩\n⟨case⟩\n⟨case⟩\n}"
+        switch_expr source="switch ⟨value⟩ {\n⟨case⟩\n⟨case⟩\n⟨case⟩\n⟨case⟩\n}"
           value: identifier "event" source="event"
           case:
             switch_case source="case ⟨pattern⟩:\n  ⟨body⟩"
@@ -216,6 +265,27 @@ top_level source="⟨body⟩"
                       argument:
                         argument source="⟨value⟩"
                           value: identifier "value" source="value"
+            switch_case source="case ⟨pattern⟩:\n  ⟨body⟩"
+              pattern:
+                call_expr source="⟨callee⟩ ⟨argument⟩"
+                  callee:
+                    member_access_expr source="⟨base⟩?.⟨member_name_node⟩"
+                      base: identifier "values" source="values"
+                      member_name_node: identifier "map" source="map"
+                  argument:
+                    argument source="⟨value⟩"
+                      value:
+                        function_expr source="{ ⟨body⟩ }"
+                          body:
+                            block source="⟨stmt⟩"
+                              stmt:
+                                binary_expr source="⟨left⟩ ⟨operator⟩ ⟨right⟩"
+                                  left: identifier "$0" source="$0"
+                                  operator: infix_operator "*" source="*"
+                                  right: int_literal "2" source="2"
+              body:
+                block source="⟨stmt⟩"
+                  stmt: break_expr "break" source="break"
             switch_case source="default:\n  ⟨body⟩"
               body:
                 block source="⟨stmt⟩"
diff --git a/unified/extractor/tests/corpus/swift/control-flow/nested-enum-case-pattern.swift b/unified/extractor/tests/corpus/swift/control-flow/nested-enum-case-pattern.swift
index ed1a6b738a4b..be136fec4a6c 100644
--- a/unified/extractor/tests/corpus/swift/control-flow/nested-enum-case-pattern.swift
+++ b/unified/extractor/tests/corpus/swift/control-flow/nested-enum-case-pattern.swift
@@ -3,6 +3,8 @@ case let .received(.some(value), timestamp):
   print(value, timestamp)
 case Type.some(let value):
   print(value)
+case values?.map { $0 * 2 }:
+  break
 default:
   break
 }
diff --git a/unified/extractor/tests/corpus/swift/expressions/array-type-constructor.output b/unified/extractor/tests/corpus/swift/expressions/array-type-constructor.output
index c0970babe165..28c66609b41b 100644
--- a/unified/extractor/tests/corpus/swift/expressions/array-type-constructor.output
+++ b/unified/extractor/tests/corpus/swift/expressions/array-type-constructor.output
@@ -1,6 +1,8 @@
 let values = [Result<Void>]()
 let initialized = [Result<Void>](unsafeUninitializedCapacity: 1) { _, count in
 	count = 0
+} completion: {
+	done()
 }
 
 ---
@@ -71,6 +73,24 @@ sourceFile
                             integerLiteralExpr
                               literal: integerLiteral "1"
                       additionalTrailingClosures:
+                        multipleTrailingClosureElement
+                          colon: :
+                          label: identifier "completion"
+                          closure:
+                            closureExpr
+                              leftBrace: {
+                              rightBrace: }
+                              statements:
+                                codeBlockItem
+                                  item:
+                                    functionCallExpr
+                                      leftParen: (
+                                      rightParen: )
+                                      arguments:
+                                      additionalTrailingClosures:
+                                      calledExpression:
+                                        declReferenceExpr
+                                          baseName: identifier "done"
                       calledExpression:
                         arrayExpr
                           elements:
@@ -144,7 +164,7 @@ top_level source="⟨body⟩"
           modifier: modifier "let" source="let"
           pattern: identifier "initialized" source="initialized"
           value:
-            call_expr source="⟨callee⟩(⟨argument⟩) ⟨argument⟩"
+            call_expr source="⟨callee⟩(⟨argument⟩) ⟨argument⟩ ⟨argument⟩"
               callee:
                 generic_type_expr source="[⟨type_argument⟩]"
                   base: identifier "Array" source=""
@@ -171,3 +191,12 @@ top_level source="⟨body⟩"
                               left: identifier "count" source="count"
                               operator: infix_operator "=" source="="
                               right: int_literal "0" source="0"
+                argument source="⟨name_node⟩: ⟨value⟩"
+                  name_node: identifier "completion" source="completion"
+                  value:
+                    function_expr source="{\n\t⟨body⟩\n}"
+                      body:
+                        block source="⟨stmt⟩"
+                          stmt:
+                            call_expr source="⟨callee⟩()"
+                              callee: identifier "done" source="done"
diff --git a/unified/extractor/tests/corpus/swift/expressions/array-type-constructor.swift b/unified/extractor/tests/corpus/swift/expressions/array-type-constructor.swift
index bd25a9cbb4ce..a4dce57c797e 100644
--- a/unified/extractor/tests/corpus/swift/expressions/array-type-constructor.swift
+++ b/unified/extractor/tests/corpus/swift/expressions/array-type-constructor.swift
@@ -1,4 +1,6 @@
 let values = [Result<Void>]()
 let initialized = [Result<Void>](unsafeUninitializedCapacity: 1) { _, count in
 	count = 0
+} completion: {
+	done()
 }
diff --git a/unified/extractor/tests/corpus/swift/expressions/subscript-call.output b/unified/extractor/tests/corpus/swift/expressions/subscript-call.output
new file mode 100644
index 000000000000..138caa29eb62
--- /dev/null
+++ b/unified/extractor/tests/corpus/swift/expressions/subscript-call.output
@@ -0,0 +1,137 @@
+handlers[0]
+
+handlers[0] {
+  first()
+} completion: {
+  second()
+} failure: {
+  third()
+}
+
+---
+
+sourceFile
+  endOfFileToken: endOfFile
+  statements:
+    codeBlockItem
+      item:
+        subscriptCallExpr
+          leftSquare: [
+          rightSquare: ]
+          arguments:
+            labeledExpr
+              expression:
+                integerLiteralExpr
+                  literal: integerLiteral "0"
+          additionalTrailingClosures:
+          calledExpression:
+            declReferenceExpr
+              baseName: identifier "handlers"
+    codeBlockItem
+      item:
+        subscriptCallExpr
+          leftSquare: [
+          rightSquare: ]
+          arguments:
+            labeledExpr
+              expression:
+                integerLiteralExpr
+                  literal: integerLiteral "0"
+          additionalTrailingClosures:
+            multipleTrailingClosureElement
+              colon: :
+              label: identifier "completion"
+              closure:
+                closureExpr
+                  leftBrace: {
+                  rightBrace: }
+                  statements:
+                    codeBlockItem
+                      item:
+                        functionCallExpr
+                          leftParen: (
+                          rightParen: )
+                          arguments:
+                          additionalTrailingClosures:
+                          calledExpression:
+                            declReferenceExpr
+                              baseName: identifier "second"
+            multipleTrailingClosureElement
+              colon: :
+              label: identifier "failure"
+              closure:
+                closureExpr
+                  leftBrace: {
+                  rightBrace: }
+                  statements:
+                    codeBlockItem
+                      item:
+                        functionCallExpr
+                          leftParen: (
+                          rightParen: )
+                          arguments:
+                          additionalTrailingClosures:
+                          calledExpression:
+                            declReferenceExpr
+                              baseName: identifier "third"
+          calledExpression:
+            declReferenceExpr
+              baseName: identifier "handlers"
+          trailingClosure:
+            closureExpr
+              leftBrace: {
+              rightBrace: }
+              statements:
+                codeBlockItem
+                  item:
+                    functionCallExpr
+                      leftParen: (
+                      rightParen: )
+                      arguments:
+                      additionalTrailingClosures:
+                      calledExpression:
+                        declReferenceExpr
+                          baseName: identifier "first"
+
+---
+
+top_level source="⟨body⟩"
+  body:
+    block source="⟨stmt⟩\n\n⟨stmt⟩"
+      stmt:
+        call_expr source="⟨callee⟩[⟨argument⟩]"
+          callee: identifier "handlers" source="handlers"
+          argument:
+            argument source="⟨value⟩"
+              value: int_literal "0" source="0"
+        call_expr source="⟨callee⟩[⟨argument⟩] ⟨argument⟩ ⟨argument⟩ ⟨argument⟩"
+          callee: identifier "handlers" source="handlers"
+          argument:
+            argument source="⟨value⟩"
+              value: int_literal "0" source="0"
+            argument source="⟨value⟩"
+              value:
+                function_expr source="{\n  ⟨body⟩\n}"
+                  body:
+                    block source="⟨stmt⟩"
+                      stmt:
+                        call_expr source="⟨callee⟩()"
+                          callee: identifier "first" source="first"
+            argument source="⟨name_node⟩: ⟨value⟩"
+              name_node: identifier "completion" source="completion"
+              value:
+                function_expr source="{\n  ⟨body⟩\n}"
+                  body:
+                    block source="⟨stmt⟩"
+                      stmt:
+                        call_expr source="⟨callee⟩()"
+                          callee: identifier "second" source="second"
+            argument source="⟨name_node⟩: ⟨value⟩"
+              name_node: identifier "failure" source="failure"
+              value:
+                function_expr source="{\n  ⟨body⟩\n}"
+                  body:
+                    block source="⟨stmt⟩"
+                      stmt:
+                        call_expr source="⟨callee⟩()"
+                          callee: identifier "third" source="third"
diff --git a/unified/extractor/tests/corpus/swift/expressions/subscript-call.swift b/unified/extractor/tests/corpus/swift/expressions/subscript-call.swift
new file mode 100644
index 000000000000..a0e4b51700bd
--- /dev/null
+++ b/unified/extractor/tests/corpus/swift/expressions/subscript-call.swift
@@ -0,0 +1,9 @@
+handlers[0]
+
+handlers[0] {
+  first()
+} completion: {
+  second()
+} failure: {
+  third()
+}
diff --git a/unified/extractor/tests/corpus/swift/functions/function-call.output b/unified/extractor/tests/corpus/swift/functions/function-call.output
index 19f1d7cf988f..79fc9e7f52e5 100644
--- a/unified/extractor/tests/corpus/swift/functions/function-call.output
+++ b/unified/extractor/tests/corpus/swift/functions/function-call.output
@@ -1,5 +1,13 @@
 foo(1, 2)
 
+handle {
+  first()
+} completion: {
+  second()
+} failure: {
+  third()
+}
+
 ---
 
 sourceFile
@@ -24,12 +32,71 @@ sourceFile
           calledExpression:
             declReferenceExpr
               baseName: identifier "foo"
+    codeBlockItem
+      item:
+        functionCallExpr
+          arguments:
+          additionalTrailingClosures:
+            multipleTrailingClosureElement
+              colon: :
+              label: identifier "completion"
+              closure:
+                closureExpr
+                  leftBrace: {
+                  rightBrace: }
+                  statements:
+                    codeBlockItem
+                      item:
+                        functionCallExpr
+                          leftParen: (
+                          rightParen: )
+                          arguments:
+                          additionalTrailingClosures:
+                          calledExpression:
+                            declReferenceExpr
+                              baseName: identifier "second"
+            multipleTrailingClosureElement
+              colon: :
+              label: identifier "failure"
+              closure:
+                closureExpr
+                  leftBrace: {
+                  rightBrace: }
+                  statements:
+                    codeBlockItem
+                      item:
+                        functionCallExpr
+                          leftParen: (
+                          rightParen: )
+                          arguments:
+                          additionalTrailingClosures:
+                          calledExpression:
+                            declReferenceExpr
+                              baseName: identifier "third"
+          calledExpression:
+            declReferenceExpr
+              baseName: identifier "handle"
+          trailingClosure:
+            closureExpr
+              leftBrace: {
+              rightBrace: }
+              statements:
+                codeBlockItem
+                  item:
+                    functionCallExpr
+                      leftParen: (
+                      rightParen: )
+                      arguments:
+                      additionalTrailingClosures:
+                      calledExpression:
+                        declReferenceExpr
+                          baseName: identifier "first"
 
 ---
 
 top_level source="⟨body⟩"
   body:
-    block source="⟨stmt⟩"
+    block source="⟨stmt⟩\n\n⟨stmt⟩"
       stmt:
         call_expr source="⟨callee⟩(⟨argument⟩, ⟨argument⟩)"
           callee: identifier "foo" source="foo"
@@ -38,3 +105,32 @@ top_level source="⟨body⟩"
               value: int_literal "1" source="1"
             argument source="⟨value⟩"
               value: int_literal "2" source="2"
+        call_expr source="⟨callee⟩ ⟨argument⟩ ⟨argument⟩ ⟨argument⟩"
+          callee: identifier "handle" source="handle"
+          argument:
+            argument source="⟨value⟩"
+              value:
+                function_expr source="{\n  ⟨body⟩\n}"
+                  body:
+                    block source="⟨stmt⟩"
+                      stmt:
+                        call_expr source="⟨callee⟩()"
+                          callee: identifier "first" source="first"
+            argument source="⟨name_node⟩: ⟨value⟩"
+              name_node: identifier "completion" source="completion"
+              value:
+                function_expr source="{\n  ⟨body⟩\n}"
+                  body:
+                    block source="⟨stmt⟩"
+                      stmt:
+                        call_expr source="⟨callee⟩()"
+                          callee: identifier "second" source="second"
+            argument source="⟨name_node⟩: ⟨value⟩"
+              name_node: identifier "failure" source="failure"
+              value:
+                function_expr source="{\n  ⟨body⟩\n}"
+                  body:
+                    block source="⟨stmt⟩"
+                      stmt:
+                        call_expr source="⟨callee⟩()"
+                          callee: identifier "third" source="third"
diff --git a/unified/extractor/tests/corpus/swift/functions/function-call.swift b/unified/extractor/tests/corpus/swift/functions/function-call.swift
index 22594bf8c7da..d3fc9dd70c9c 100644
--- a/unified/extractor/tests/corpus/swift/functions/function-call.swift
+++ b/unified/extractor/tests/corpus/swift/functions/function-call.swift
@@ -1 +1,9 @@
 foo(1, 2)
+
+handle {
+  first()
+} completion: {
+  second()
+} failure: {
+  third()
+}