Fix indentation of switch.

Author: taku0

swift-mode-lexer.el

@@ -258,7 +258,7 @@ END is the point after the token."
      ;; Suppress implicit semicolon after keywords that cannot end statements.
      ((member (swift-mode:token:text previous-token)
               '("while" "for" "switch" "case" "default" "catch" "if" "guard"
-                "let" "var" "throw" "import" "return"))
+                "let" "var" "throw" "import"))
       nil)
 
      ;; Inserts implicit semicolon before keywords that starts a new
@@ -268,6 +268,10 @@ END is the point after the token."
                 "guard" "let" "var" "throw" "import" "return"))
       t)
 
+     ;; Suppress implicit semicolon after return.
+     ((equal (swift-mode:token:text previous-token) "return")
+      nil)
+
      ;; Inserts implicit semicolon before `while' unless it is part of
      ;; `repeat...while'.
      ((equal (swift-mode:token:text next-token) "while")

test/swift-files/statements.swift

@@ -897,6 +897,13 @@ default:
     }
 }
 
+switch foo {
+case 1:
+    return
+case 2:
+    bar()
+}
+
 // swift-mode:test:eval (setq-local swift-mode:switch-case-offset 2)
 
 switch foo {