[MacPorts] #57046: latex2man @1.23: installation failure due to unescaped left brace in regex

[MacPorts]

#57046: latex2man @1.23: installation failure due to unescaped left brace in regex
------------------------+------------------------
  Reporter:  pelzlpj    |      Owner:  ryandesign
      Type:  defect     |     Status:  accepted
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.5.3
Resolution:             |   Keywords:
      Port:  latex2man  |
------------------------+------------------------

Comment (by ryandesign):

 I was going to simply update it, but 1.26 and 1.27 don't build. The error
 is:

 {{{
 ./latex2man -M latex2man.tex latex2man.1
 latex2man: Can't open file \input-file `latex2man.inc' for reading.
 }}}

 I've emailed the developer for help.

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Ticket URL: <https://trac.macports.org/ticket/57046#comment:3>
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