[MacPorts] #40856: ragel: error: use of undeclared identifier 'setiosflags'; did you mean 'std::setiosflags'?

[MacPorts]

#40856: ragel: error: use of undeclared identifier 'setiosflags'; did you mean
'std::setiosflags'?
---------------------------+-------------------
  Reporter:  ryandesign@…  |      Owner:  mww@…
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.2.0
Resolution:                |   Keywords:
      Port:  ragel         |
---------------------------+-------------------

Comment (by aronnax@…):

 Attaching patch based on FreeBSD's solution,
 <http://lists.freebsd.org/pipermail/freebsd-ports-
 bugs/2011-December/224547.html>.

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Ticket URL: <https://trac.macports.org/ticket/40856#comment:2>
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