headius	2016-09-27 06:12:12 +0900 (Tue, 27 Sep 2016)

  New Revision: 56260

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=56260

  Log:
    * test/ripper/test_ripper.rb: add a test for dedent_string.

  Modified files:
    trunk/test/ripper/test_ripper.rb
Index: test/ripper/test_ripper.rb
===================================================================
--- test/ripper/test_ripper.rb	(revision 56259)
+++ test/ripper/test_ripper.rb	(revision 56260)
@@ -98,4 +98,23 @@ class TestRipper::Ripper < Test::Unit::T https://github.com/ruby/ruby/blob/trunk/test/ripper/test_ripper.rb#L98
       assert_nil(Ripper.sexp(src), bug12651)
     end;
   end
+
+  # https://bugs.jruby.org/4176
+  def test_dedent_string
+    col = Ripper.dedent_string '  hello', 0
+    assert_equal 0, col
+    col = Ripper.dedent_string '  hello', 2
+    assert_equal 2, col
+    col = Ripper.dedent_string '  hello', 4
+    assert_equal 2, col
+
+    # lexing a squiggly heredoc triggers Ripper#dedent_string use
+    src = <<-END
+puts <<~END
+  hello
+end
+    END
+
+    assert_nothing_raised { Ripper.lex src }
+  end
 end if ripper_test

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