nobu	2019-03-09 19:17:33 +0900 (Sat, 09 Mar 2019)

  New Revision: 67200

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=67200

  Log:
    Add ignored_sp event
    
    * ext/ripper/lib/ripper/lexer.rb (Ripper::Lexer): add ignored_sp
      event which will be fired from Ripper::Lexer#on_heredoc_dedent
      method.  [ruby-core:91727] [Bug #15648]

  Modified files:
    trunk/ext/ripper/lib/ripper/lexer.rb
    trunk/test/ripper/test_scanner_events.rb
Index: ext/ripper/lib/ripper/lexer.rb
===================================================================
--- ext/ripper/lib/ripper/lexer.rb	(revision 67199)
+++ ext/ripper/lib/ripper/lexer.rb	(revision 67200)
@@ -83,6 +83,12 @@ class Ripper https://github.com/ruby/ruby/blob/trunk/ext/ripper/lib/ripper/lexer.rb#L83
 
     private
 
+    unless SCANNER_EVENT_TABLE.key?(:ignored_sp)
+      SCANNER_EVENT_TABLE[:ignored_sp] = 1
+      SCANNER_EVENTS << :ignored_sp
+      EVENTS << :ignored_sp
+    end
+
     def on_heredoc_dedent(v, w)
       ignored_sp = []
       heredoc = @buf.last
Index: test/ripper/test_scanner_events.rb
===================================================================
--- test/ripper/test_scanner_events.rb	(revision 67199)
+++ test/ripper/test_scanner_events.rb	(revision 67200)
@@ -888,6 +888,13 @@ class TestRipper::ScannerEvents < Test:: https://github.com/ruby/ruby/blob/trunk/test/ripper/test_scanner_events.rb#L888
                  scan('ignored_nl', "1;\r\n")
   end
 
+  def test_ignored_sp
+    assert_equal [],
+                 scan('ignored_sp', "<<~EOS\nheredoc\nEOS")
+    assert_equal ["  "],
+                 scan('ignored_sp', "<<~EOS\n  heredoc\nEOS")
+  end
+
   def test___end__
     assert_equal [],
                  scan('__end__', "")

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