From f18a91cf644a00a3a798535b18f1bcb8fb5db7c9 Mon Sep 17 00:00:00 2001
From: summivox <summivox@gmail.com>
Date: Sun, 21 Feb 2016 02:39:36 -0500
Subject: [PATCH] Fix #858 Inconsistent empty splat assignment

See #858

TL;DR: `[a, ..., b, c, d] = [1 2 3]` should behave the same as `[a, ...m, b, c, d]`
---
 src/ast.ls    | 12 ++++++++----
 test/splat.ls |  6 ++++++
 2 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/src/ast.ls b/src/ast.ls
index ea3d690b8..f7c5c32ea 100644
--- a/src/ast.ls
+++ b/src/ast.ls
@@ -1660,10 +1660,14 @@ class exports.Assign extends Node
                     continue if skip and i+2 is len
                     start = i+1
                     @temps = [ivar = o.scope.temporary \i]
-                    val = if skip then node = Var ivar; Var val else
-                        Arr.wrap JS "#i < (#ivar = #val)
-                                  \ ? #{ util \slice }.call(#rite, #i, #ivar)
-                                  \ : (#ivar = #i, [])"
+                    val = switch
+                    | skip
+                        Arr.wrap JS "#i < (#ivar = #val) ? #i : (#ivar = #i)"
+                    | _
+                        Arr.wrap JS do
+                            "#i < (#ivar = #val)
+                            \ ? #{ util \slice }.call(#rite, #i, #ivar)
+                            \ : (#ivar = #i, [])"
             else
                 (inc = ivar) and start < i and inc += " + #{ i - start }"
                 val = Chain rcache||=Literal(rite), [Index JS inc || i]
diff --git a/test/splat.ls b/test/splat.ls
index 896eb7e62..723dc1440 100644
--- a/test/splat.ls
+++ b/test/splat.ls
@@ -102,6 +102,12 @@ eq b, 2
 eq a, 1
 eq b, 5
 
+# [LiveScript#858](https://github.com/gkz/LiveScript/issues/858)
+[a, ..., b, c, d] = [1 2 3]
+eq a, 1
+eq b, 2
+eq c, 3
+
 eq '''
 (function(){
   var a;