Issue #17644 has been updated by naruse (Yui NARUSE).

Backport changed from 2.5: DONTNEED, 2.6: DONTNEED, 2.7: DONTNEED, 3.0: REQUIRED to 2.5: DONTNEED, 2.6: DONTNEED, 2.7: DONTNEED, 3.0: DONE

ruby_3_0 a6dec2e144d65011d49f272e494bf62daf3d7531 merged revision(s) 5de38c41ae7bf17ae599fdfa9f8face87f16d8bb.

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Bug #17644: Ripper.lex fails with syntax error and heredoc
https://bugs.ruby-lang.org/issues/17644#change-90700

* Author: shugo (Shugo Maeda)
* Status: Closed
* Priority: Normal
* ruby -v: ruby 3.1.0dev (2021-02-18T13:35:34Z master 7b9476fbfa) [x86_64-darwin19]
* Backport: 2.5: DONTNEED, 2.6: DONTNEED, 2.7: DONTNEED, 3.0: DONE
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`Ripper.lex` fails with syntax error and heredoc:

```
$ cat t.rb
require "ripper"
s = <<~EOF
    foo
  end
  <<~EOS
    bar
  EOS
EOF
p Ripper.lex(s)
$ ruby t.rb
/Users/shugo/.rbenv/versions/master/lib/ruby/3.1.0/ripper/lexer.rb:110:in `each': undefined method `pos' for [#<Ripper::Lexer::Elem: on_heredoc_beg@3:0:BEG: "<<~EOS">, #<Ripper::Lexer::Elem: on_ignored_sp@4:0:BEG: "  ">, #<Ripper::Lexer::Elem: on_tstring_content@4:2:BEG: "bar\\n">, #<Ripper::Lexer::Elem: on_heredoc_end@5:0:BEG: "EOS\\n">]:Array (NoMethodError)
Did you mean?  pop
        from /Users/shugo/.rbenv/versions/master/lib/ruby/3.1.0/ripper/lexer.rb:110:in `sort_by'
        from /Users/shugo/.rbenv/versions/master/lib/ruby/3.1.0/ripper/lexer.rb:110:in `lex'
        from /Users/shugo/.rbenv/versions/master/lib/ruby/3.1.0/ripper/lexer.rb:52:in `lex'
        from t.rb:9:in `<main>'
```

It seems that this bug was introduced by commit:69d871eeeb2.




-- 
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