From d4c25c571bfac8e9bf91b2b894837d61370b0c35 Mon Sep 17 00:00:00 2001
From: Mihai Bazon <mihai@bazon.net>
Date: Thu, 1 Nov 2012 13:35:08 +0200
Subject: [PATCH] fix compressing UnaryPrefix

only try negating the expression if the operator is `!`

#kendo
---
 lib/compress.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/compress.js b/lib/compress.js
index ee255d78..c3b76118 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -1446,7 +1446,7 @@ merge(Compressor.prototype, {
                 return make_node(AST_True, self);
             }
         }
-        if (e instanceof AST_Binary) {
+        if (e instanceof AST_Binary && self.operator == "!") {
             self = best_of(self, e.negate(compressor));
         }
         return self.evaluate(compressor)[0];
-- 
2.34.1