Fix for #45 for i, in ...

CHANGELOG.md

@@ -5,6 +5,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Fixed
+- Fix formatting bug for `for i, in [[1, 2]] ; x ; end` issue  #45
+
 ### Changed
 The default for the following options has changed:
 - parens_in_def: ~~dynamic~~ > yes

lib/rufo/formatter.rb

@@ -1615,6 +1615,13 @@ def visit_for(node)
     consume_space
 
     visit_comma_separated_list to_ary(var)
+    skip_space
+    if comma?
+      check :on_comma
+      write ','
+      next_token
+      skip_space_or_newline
+    end
 
     consume_space
     consume_keyword "in"

spec/lib/rufo/formatter_source_specs/for.rb.spec

@@ -34,15 +34,26 @@ for x in y
   2
 end
 
-#~# ORIGINAL
-#~# PENDING
+#~# ORIGINAL bug_45
 
 for i, in [[1,2]]
   i.should == 1
 end
 
 #~# EXPECTED
 
-for i, in [[1,2]]
+for i, in [[1, 2]]
+  i.should == 1
+end
+
+#~# ORIGINAL
+
+for i,j, in [[1,2]]
+  i.should == 1
+end
+
+#~# EXPECTED
+
+for i, j, in [[1, 2]]
   i.should == 1
 end