Unintuitive here document behavior: bug or feature?

[A. Sundararajan]

We do plan to update the documentation. Another separate bug will be 
filed for doc issue(s) in this area.

Thanks,
-Sundar

On Tuesday 24 February 2015 12:20 AM, Anthony Vanelverdinghe wrote:
> Hi
>
> I see the bug has been resolved as not an issue. However, in my 
> opinion this behavior is sufficiently unintuitive that it should at 
> least be documented:
> - as far as I know, appending commands after the starting "<<EOD" is 
> not possible in a bash script (already the fact that in Nashorn the 
> "<<EOD" is actually embedded in the statement, as in "print(<<EOD);", 
> is pretty unique, I believe)
> - moreover, users that are unaware of this behavior, may start writing 
> text on the same line & will get errors at runtime. For example:
>
> print(<<EOD); This is line 1.
> And this is line 2.
> EOD
>
> results in:
>
> test.js:3:-33 Expected ; but found is
> print(<<EOD); This is line 1.
> ^
>
> and:
>
> print(<<EOD); This
> And this is line 2.
> EOD
>
> results in:
>
> And this is line 2.
> test.js:3 ReferenceError: "This" is not defined
>
> (also note that the error refers to line 3 in both cases, even though 
> line 3 just contains the closing delimiter)
>
> So in conclusion, I would like to ask for this bug to be reopened, 
> with the goal to specify this behavior in the appropriate section of 
> the Nashorn user guide [1]. Thanks in advance for your consideration.
>
> Kind regards, Anthony
>
> [1] 
> http://docs.oracle.com/javase/8/docs/technotes/guides/scripting/nashorn/shell.html#sthref26
>
>
> On 23/02/2015 4:46, A. Sundararajan wrote:
>> Hi,
>>
>> It appears to be a bug to me. Thanks for reporting. I filed 
>> https://bugs.openjdk.java.net/browse/JDK-8073612
>>
>> Thanks,
>> -Sundar
>>
>> On Sunday 22 February 2015 04:42 PM, Anthony Vanelverdinghe wrote:
>>> Hi
>>>
>>> When using a here document, statements that are on the same line as 
>>> the initial <<EOD are interpreted as JavaScript & executed after the 
>>> "heredoc statement". Is this a bug or a feature?
>>>
>>> For example:
>>>
>>> var a = 2;
>>> print(<<EOD); a = 3; print("here")
>>> a++;
>>> ${a}
>>> EOD
>>> print(a);
>>>
>>> prints
>>>
>>> a++;
>>> 2
>>> here
>>> 3
>>>
>>> Kind regards, Anthony
>>
>>
>