[ruby-dev:48741] [ruby-trunk - Bug #10543] [Open] ruby -c and ripper inconsistency: /(?<n>a(b|\g<n>))/

Issue #10543 has been reported by Akira Tanaka.

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Bug #10543: ruby -c and ripper inconsistency: /(?<n>a(b|\g<n>))/
https://bugs.ruby-lang.org/issues/10543

* Author: Akira Tanaka
* Status: Open
* Priority: Normal
* Assignee:=20
* Category:=20
* Target version:=20
* ruby -v: ruby 2.2.0dev (2014-11-26 trunk 48577) [x86_64-linux]
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN
----------------------------------------
=E4=BB=A5=E4=B8=8B=E3=81=AE=E3=82=88=E3=81=86=E3=81=AB=E3=80=81/(?<n>a(b|\g=
<n>))/ =E3=81=A8=E3=81=84=E3=81=86=E3=81=A0=E3=81=91=E3=81=AE=E3=82=BD=E3=
=83=BC=E3=82=B9=E3=81=AF
ruby -c =E3=81=A7=E3=81=AF=E5=95=8F=E9=A1=8C=E7=84=A1=E3=81=97=E3=81=A8=E3=
=81=AA=E3=82=8A=E3=81=BE=E3=81=99=E3=81=8C=E3=80=81
Ripper.sexp =E3=81=A7=E3=81=AF=E6=A7=8B=E6=96=87=E6=9C=A8=E3=81=A7=E3=81=AA=
=E3=81=8F nil =E3=81=8C=E8=BF=94=E3=81=A3=E3=81=A6=E3=81=8D=E3=81=A6=E3=81=
=97=E3=81=BE=E3=81=84=E3=81=BE=E3=81=99=E3=80=82

```
% cat z.rb=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
/(?<n>a(b|\g<n>))/
% ./ruby -c z.rb
Syntax OK
% ./ruby -rripper -e 'p Ripper.sexp(STDIN.read)' < z.rb=20=20
nil
% ./ruby -v=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20
ruby 2.2.0dev (2014-11-26 trunk 48577) [x86_64-linux]
```




--=20
https://bugs.ruby-lang.org/