FULL PRODUCT VERSION :
java version "1.8.0_31"
Java(TM) SE Runtime Environment (build 1.8.0_31-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.31-b07, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.3.9600]

A DESCRIPTION OF THE PROBLEM :
In a nashorn script, a here document with only whitespace causes an error.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Create a file "test.js" with the following content:

print(<<EOD);

EOD

So the file contains 4 lines: 1 blank line inside the here document, & 1 blank line after the second occurrence of EOD.

Now run the script with the jjs tool, on Windows:
jjs -scripting test.js

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
a blank line is printed
ACTUAL -
test.js:3:3 Here string missing end marker "EOD"
EOD
         ^

REPRODUCIBILITY :
This bug can be reproduced always.