[[FIX]] change escape-sequence handler for double quotes (\")

[emonmeena]

Changes the handling of escape sequence case for \" in the lex.js file. Earlier, it converted \" into \\\", which is not the correct js equivalent for the case as it should be " only. This was causing issue #3315 as \" != " that is why jshint considers them different strings.

Fixes and Closes #3315

[coveralls]

Coverage remained the same at 100.0% when pulling 1a87b62 on maayami:escap_sequence_handling into 4a681b9 on jshint:master.

[jugglinmike]

Thanks for the patch! Could you add a unit test which demonstrates its correctness? The file tests/unit/core.js seems like a good place for this. We could use a test case that fails in the current release of JSHint but passes with this patch applied. That will prove that this patch has the intended effect, and it will help us avoid accidentally breaking the new and improved behavior in the future.

[emonmeena]

Sure @jugglinmike I'll add a unit test for this.

[emonmeena]

Hey @jugglinmike, I have added a unit test in the commit 849e08d that fails for the latest version of JSHint but passes with this path applied. I have checked for the existing unit tests as well, it has passed all of them.

Also, can you please check the changes in the commit 1a87b62. It deals with the naming of the unit test.

[jugglinmike]

Beautiful! Thanks for the help!