From 992324b425491cb844707cdc3a9fcfdc5e8c66f9 Mon Sep 17 00:00:00 2001
From: Michael Ficarra <git@michael.ficarra.me>
Date: Thu, 2 Dec 2010 12:55:53 -0500
Subject: [PATCH] fix for #891: incorrect inversion of chained comparisons

---
 lib/nodes.js     | 3 +++
 src/nodes.coffee | 3 ++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/nodes.js b/lib/nodes.js
index e5c7c241..b5c2868f 100644
--- a/lib/nodes.js
+++ b/lib/nodes.js
@@ -1479,6 +1479,9 @@
       var fst, op, _ref;
       if (op = INVERSIONS[this.operator]) {
         this.operator = op;
+        if (this.first.isChainable()) {
+          this.first.invert();
+        }
         return this;
       } else if (this.second) {
         return new Parens(this).invert();
diff --git a/src/nodes.coffee b/src/nodes.coffee
index 7eb493e4..d80cbfe6 100644
--- a/src/nodes.coffee
+++ b/src/nodes.coffee
@@ -1179,6 +1179,7 @@ exports.Op = class Op extends Base
   invert: ->
     if op = INVERSIONS[@operator]
       @operator = op
+      @first.invert() if @first.isChainable()
       this
     else if @second
       new Parens(this).invert()
@@ -1207,7 +1208,7 @@ exports.Op = class Op extends Base
   #     true
   compileChain: (o) ->
     [@first.second, shared] = @first.second.cache o
-    fst  = @first .compile o, LEVEL_OP
+    fst  = @first.compile o, LEVEL_OP
     fst  = fst.slice 1, -1 if fst.charAt(0) is '('
     code = "#{fst} && #{ shared.compile o } #{@operator} #{ @second.compile o, LEVEL_OP }"
     if o.level < LEVEL_OP then code else "(#{code})"