Fix for Issue 317 - bug in string.replace(string, "$foo").

Fix for Issue 317. Replace string with something containing dollar now works.

Review URL: http://codereview.chromium.org/94002


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1764 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/string.js

@@ -304,6 +304,8 @@ function ExpandReplacement(string, subject, matchInfo, builder) {
           builder.add('$');
           --position;
         }
+      } else {
+        builder.add('$');
       }
     } else {
       builder.add('$');

test/mjsunit/regress/regress-317.js

+// Copyright 2009 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Ensure replacement with string allows $ in replacement string.
+
+assertEquals("a$ec", "abc".replace("b", "$e"), "$e isn't meaningful");
+

test/mjsunit/string-replace.js

@@ -104,6 +104,15 @@ replaceTest("xax[]xcx", short, /b()/, "[$1]");
 replaceTest("xax[$1]xcx", short, /b/g, "[$1]");
 replaceTest("xax[]xcx", short, /b()/g, "[$1]");
 
+// Bug 317 look-alikes. If "$e" has no meaning, the "$" must be retained.
+replaceTest("xax$excx", short, "b", "$e");
+replaceTest("xax$excx", short, /b/, "$e");
+replaceTest("xax$excx", short, /b/g, "$e");
+
+replaceTest("xaxe$xcx", short, "b", "e$");
+replaceTest("xaxe$xcx", short, /b/, "e$");
+replaceTest("xaxe$xcx", short, /b/g, "e$");
+
 
 replaceTest("[$$$1$$a1abb1bb0$002$3$03][$$$1$$b1bcc1cc0$002$3$03]c", 
             "abc", /(.)(?=(.))/g, "[$$$$$$1$$$$$11$01$2$21$02$020$002$3$03]");