Issue #11990 has been updated by Yui NARUSE.

Backport changed from 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONTNEED, 2.3: REQUIRED to 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONTNEED, 2.3: DONE

ruby_2_3 r54399 merged revision(s) 53541,53555,53570.

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Bug #11990: Dedenting heredoc interacts poorly with string concatenation
https://bugs.ruby-lang.org/issues/11990#change-57817

* Author: whitequark *
* Status: Closed
* Priority: Normal
* Assignee: 
* ruby -v: ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-linux]
* Backport: 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONTNEED, 2.3: DONE
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The following code reproduces the problem:

~~~
p <<~E "  y"
  x
E
~~~

It prints `"x\ny"`, but the second string is not dedenting. It should print `"x\n  y"`.



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