[MacPorts] #57230: Unable to install rb-rubygems on Mojave

[MacPorts]

#57230: Unable to install rb-rubygems on Mojave
--------------------------+--------------------
  Reporter:  jpmelko      |      Owner:  (none)
      Type:  defect       |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  rb-rubygems  |
--------------------------+--------------------

Comment (by mf2k):

 Error appears to be:
 {{{
 debug:destroot system:  cd
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports
 .org_macports_release_tarballs_ports_ruby_rb-rubygems/rb-
 rubygems/work/rubygems-1.3.7" && /opt/local/bin/ruby${ruby.default_branch}
 setup.rb install --prefix=/opt/local
 --destdir=/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports
 .org_macports_release_tarballs_ports_ruby_rb-rubygems/rb-
 rubygems/work/destroot --vendor --no-format-executable
 DESTDIR=/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports
 .org_macports_release_tarballs_ports_ruby_rb-rubygems/rb-
 rubygems/work/destroot
 :info:destroot sh: /opt/local/bin/ruby${ruby.default_branch}: bad
 substitution
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/57230#comment:4>
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