From: Mihai Bazon <mihai@bazon.net>
Date: Tue, 13 Nov 2012 12:34:38 +0000 (+0200)
Subject: Merge branch 'optimize_concat' of https://github.com/rvanvelzen/UglifyJS2 into rvanve... 
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=60c0f40250f0f68ac78f8ddab177336040243579;p=UglifyJS.git

Merge branch 'optimize_concat' of https://github.com/rvanvelzen/UglifyJS2 into rvanvelzen-optimize_concat
---

60c0f40250f0f68ac78f8ddab177336040243579
diff --cc lib/compress.js
index dcd376ca,fce0757c..ed664a28
--- a/lib/compress.js
+++ b/lib/compress.js
@@@ -1656,6 -1642,11 +1656,11 @@@ merge(Compressor.prototype, 
                case "<=": reverse(">="); break;
              }
          }
+         if (self.operator == "+" && self.right instanceof AST_String
+             && self.right.getValue() === "" && self.left instanceof AST_Binary
 -            && self.left.operator == "+" && self.left.left instanceof AST_String) {
++            && self.left.operator == "+" && self.left.is_string()) {
+             return self.left;
+         }
          return self;
      });