diff -r 000000000000 -r 6474c204b198 browser/devtools/commandline/test/browser_gcli_string.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/commandline/test/browser_gcli_string.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,285 @@
+/*
+ * Copyright 2012, Mozilla Foundation and contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+'use strict';
+// <INJECTED SOURCE:START>
+
+// THIS FILE IS GENERATED FROM SOURCE IN THE GCLI PROJECT
+// DO NOT EDIT IT DIRECTLY
+
+var exports = {};
+
+var TEST_URI = "data:text/html;charset=utf-8,<p id='gcli-input'>gcli-testString.js</p>";
+
+function test() {
+  return Task.spawn(function() {
+    let options = yield helpers.openTab(TEST_URI);
+    yield helpers.openToolbar(options);
+    gcli.addItems(mockCommands.items);
+
+    yield helpers.runTests(options, exports);
+
+    gcli.removeItems(mockCommands.items);
+    yield helpers.closeToolbar(options);
+    yield helpers.closeTab(options);
+  }).then(finish, helpers.handleError);
+}
+
+// <INJECTED SOURCE:END>
+
+// var helpers = require('./helpers');
+
+exports.testNewLine = function(options) {
+  return helpers.audit(options, [
+    {
+      setup:    'echo a\\nb',
+      check: {
+        input:  'echo a\\nb',
+        hints:            '',
+        markup: 'VVVVVVVVV',
+        cursor: 9,
+        current: 'message',
+        status: 'VALID',
+        args: {
+          command: { name: 'echo' },
+          message: {
+            value: 'a\nb',
+            arg: ' a\\nb',
+            status: 'VALID',
+            message: ''
+          }
+        }
+      }
+    }
+  ]);
+};
+
+exports.testTab = function(options) {
+  return helpers.audit(options, [
+    {
+      setup:    'echo a\\tb',
+      check: {
+        input:  'echo a\\tb',
+        hints:            '',
+        markup: 'VVVVVVVVV',
+        cursor: 9,
+        current: 'message',
+        status: 'VALID',
+        args: {
+          command: { name: 'echo' },
+          message: {
+            value: 'a\tb',
+            arg: ' a\\tb',
+            status: 'VALID',
+            message: ''
+          }
+        }
+      }
+    }
+  ]);
+};
+
+exports.testEscape = function(options) {
+  return helpers.audit(options, [
+    {
+      // What's typed is actually:
+      //         tsrsrsr a\\ b c
+      setup:    'tsrsrsr a\\\\ b c',
+      check: {
+        input:  'tsrsrsr a\\\\ b c',
+        hints:                 '',
+        markup: 'VVVVVVVVVVVVVVV',
+        status: 'VALID',
+        message: '',
+        args: {
+          command: { name: 'tsrsrsr' },
+          p1: { value: 'a\\', arg: ' a\\\\', status: 'VALID', message: '' },
+          p2: { value: 'b', arg: ' b', status: 'VALID', message: '' },
+          p3: { value: 'c', arg: ' c', status: 'VALID', message: '' },
+        }
+      }
+    },
+    {
+      // What's typed is actually:
+      //         tsrsrsr abc\\ndef asd asd
+      setup:    'tsrsrsr abc\\\\ndef asd asd',
+      check: {
+        input:  'tsrsrsr abc\\\\ndef asd asd',
+        hints:                           '',
+        markup: 'VVVVVVVVVVVVVVVVVVVVVVVVV',
+        status: 'VALID',
+        message: '',
+        args: {
+          command: { name: 'tsrsrsr' },
+          p1: {
+            value: 'abc\\ndef',
+            arg: ' abc\\\\ndef',
+            status: 'VALID',
+            message: ''
+          },
+          p2: { value: 'asd', arg: ' asd', status: 'VALID', message: '' },
+          p3: { value: 'asd', arg: ' asd', status: 'VALID', message: '' },
+        }
+      }
+    }
+  ]);
+};
+
+exports.testBlank = function(options) {
+  return helpers.audit(options, [
+    {
+      setup:    'tsrsrsr a "" c',
+      check: {
+        input:  'tsrsrsr a "" c',
+        hints:                '',
+        markup: 'VVVVVVVVVVVVVV',
+        cursor: 14,
+        current: 'p3',
+        status: 'ERROR',
+        message: '',
+        args: {
+          command: { name: 'tsrsrsr' },
+          p1: {
+            value: 'a',
+            arg: ' a',
+            status: 'VALID',
+            message: ''
+          },
+          p2: {
+            value: undefined,
+            arg: ' ""',
+            status: 'INCOMPLETE'
+          },
+          p3: {
+            value: 'c',
+            arg: ' c',
+            status: 'VALID',
+            message: ''
+          }
+        }
+      }
+    },
+    {
+      setup:    'tsrsrsr a b ""',
+      check: {
+        input:  'tsrsrsr a b ""',
+        hints:                '',
+        markup: 'VVVVVVVVVVVVVV',
+        cursor: 14,
+        current: 'p3',
+        status: 'VALID',
+        message: '',
+        args: {
+          command: { name: 'tsrsrsr' },
+          p1: {
+            value: 'a',
+            arg: ' a',
+            status:'VALID',
+            message: '' },
+          p2: {
+            value: 'b',
+            arg: ' b',
+            status: 'VALID',
+            message: ''
+          },
+          p3: {
+            value: '',
+            arg: ' ""',
+            status: 'VALID',
+            message: ''
+          }
+        }
+      }
+    }
+  ]);
+};
+
+exports.testBlankWithParam = function(options) {
+  return helpers.audit(options, [
+    {
+      setup:    'tsrsrsr  a --p3',
+      check: {
+        input:  'tsrsrsr  a --p3',
+        hints:                 ' <string> <p2>',
+        markup: 'VVVVVVVVVVVVVVV',
+        cursor: 15,
+        current: 'p3',
+        status: 'ERROR',
+        message: '',
+        args: {
+          command: { name: 'tsrsrsr' },
+          p1: { value: 'a', arg: '  a', status: 'VALID', message: '' },
+          p2: { value: undefined, arg: '', status: 'INCOMPLETE' },
+          p3: { value: '', arg: ' --p3', status: 'VALID', message: '' },
+        }
+      }
+    },
+    {
+      setup:    'tsrsrsr  a --p3 ',
+      check: {
+        input:  'tsrsrsr  a --p3 ',
+        hints:                  '<string> <p2>',
+        markup: 'VVVVVVVVVVVVVVVV',
+        cursor: 16,
+        current: 'p3',
+        status: 'ERROR',
+        message: '',
+        args: {
+          command: { name: 'tsrsrsr' },
+          p1: { value: 'a', arg: '  a', status: 'VALID', message: '' },
+          p2: { value: undefined, arg: '', status: 'INCOMPLETE' },
+          p3: { value: '', arg: ' --p3 ', status: 'VALID', message: '' },
+        }
+      }
+    },
+    {
+      setup:    'tsrsrsr  a --p3 "',
+      check: {
+        input:  'tsrsrsr  a --p3 "',
+        hints:                   ' <p2>',
+        markup: 'VVVVVVVVVVVVVVVVV',
+        cursor: 17,
+        current: 'p3',
+        status: 'ERROR',
+        message: '',
+        args: {
+          command: { name: 'tsrsrsr' },
+          p1: { value: 'a', arg: '  a', status: 'VALID', message: '' },
+          p2: { value: undefined, arg: '', status: 'INCOMPLETE' },
+          p3: { value: '', arg: ' --p3 "', status: 'VALID', message: '' },
+        }
+      }
+    },
+    {
+      setup:    'tsrsrsr  a --p3 ""',
+      check: {
+        input:  'tsrsrsr  a --p3 ""',
+        hints:                    ' <p2>',
+        markup: 'VVVVVVVVVVVVVVVVVV',
+        cursor: 18,
+        current: 'p3',
+        status: 'ERROR',
+        message: '',
+        args: {
+          command: { name: 'tsrsrsr' },
+          p1: { value: 'a', arg: '  a', status: 'VALID', message: '' },
+          p2: { value: undefined, arg: '', status: 'INCOMPLETE' },
+          p3: { value: '', arg: ' --p3 ""', status: 'VALID', message: '' },
+        }
+      }
+    }
+  ]);
+};