From 1350604e933f81fbda3e6670eb7a6102b06b01aa Mon Sep 17 00:00:00 2001
From: Rachel Fenichel <fenichel@google.com>
Date: Fri, 18 Sep 2020 13:37:54 -0700
Subject: [PATCH] Fix dart multiline strings

---
 generators/dart.js | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/generators/dart.js b/generators/dart.js
index da760b32a..5e531016b 100644
--- a/generators/dart.js
+++ b/generators/dart.js
@@ -176,10 +176,11 @@ Blockly.Dart.quote_ = function(string) {
  * @return {string} Dart string.
  * @private
  */
-Blockly.Dart.multiline_quote_ = function(string) {
-  // Can't use goog.string.quote since $ must also be escaped.
-  string = string.replace(/'''/g, '\\\'\\\'\\\'');
-  return '\'\'\'' + string + '\'\'\'';
+Blockly.Dart.multiline_quote_ = function (string) {
+  var lines = string.split(/\n/g).map(Blockly.Dart.quote_);
+  // Join with the following, plus a newline:
+  // + '\n' +
+  return lines.join(' + \'\\n\' + \n');
 };