correct indentation outside of blocks

elixir-smie.el

@@ -264,6 +264,10 @@
 
 (defun elixir-smie-rules (kind token)
   (pcase (cons kind token)
+    (`(:list-intro . ";")
+     -4)
+    (`(:elem . args)
+     -4)
     (`(:before . "OP")
      (when (and (not (smie-rule-hanging-p))
                 (smie-rule-prev-p "OP"))
@@ -282,12 +286,16 @@
       (t (smie-rule-parent))))
     (`(:before . "MATCH-STATEMENT-DELIMITER")
      (cond
+      ((smie-rule-parent-p "MATCH-STATEMENT-DELIMITER")
+       (smie-rule-parent))
       ((and (not (smie-rule-sibling-p))
+            (nth 2 smie--parent)
             (smie-rule-hanging-p))
        (smie-rule-parent elixir-smie-indent-basic))
-      ((smie-rule-parent-p "MATCH-STATEMENT-DELIMITER")
-       (smie-rule-parent))
-      (t (smie-rule-parent elixir-smie-indent-basic))))
+      ((and (not (smie-rule-sibling-p))
+            (not (nth 2 smie--parent))
+            (smie-rule-hanging-p))
+       (smie-rule-parent))))
     (`(:before . "fn")
      (smie-rule-parent))
     (`(:before . "end")
@@ -351,6 +359,7 @@
       ((smie-rule-parent-p "if")
        (smie-rule-parent))
       ((and (smie-rule-parent-p "(")
+            (boundp 'smie--parent)
             (save-excursion
               (goto-char (cadr smie--parent))
               (smie-rule-hanging-p)))

test/elixir-mode-indentation-test.el

@@ -1003,6 +1003,35 @@ defmodule X do
   end
 end")
 
+(elixir-def-indentation-test indent-outside-block
+                             (:tags '(indentation))
+"
+  1 + 1  # => 2
+
+sum = fn(a, b) ->
+a + b
+     end
+
+sum.(1231, 3)
+
+     a = 23
+   a = a
+
+23 / 3"
+"
+1 + 1  # => 2
+
+sum = fn(a, b) ->
+  a + b
+end
+
+sum.(1231, 3)
+
+a = 23
+a = a
+
+23 / 3")
+
 ;; We don't want automatic whitespace cleanup here because of the significant
 ;; whitespace after `Record' above. By setting `whitespace-action' to nil,
 ;; `whitespace-mode' won't automatically clean up trailing whitespace (in my