[MacPorts] #55778: multimarkdown @6.2.3: breaking changes with previous version @4.5

[MacPorts]

#55778: multimarkdown @6.2.3: breaking changes with previous version @4.5
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  Reporter:  jlargentaye    |      Owner:
      Type:  defect         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:
Resolution:                 |   Keywords:
      Port:  multimarkdown  |
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Comment (by jlargentaye):

 In the related MMD issue, the author points out that I actually can use
 both kinds of directives in a document, and it should work.

 I was spooked because MMD4 turns the input directive `latex leader:
 mmd-memoir-header` into the following in the latex output:
 `\def\latexleader{mmd-memoir-header}`, but it turns out the latter is
 harmless in LaTeX: it defines a new function that is never used, and the
 generated document actually builds fine.

 So there is actually a compatibility path between MMD4 and MMD6: use both
 old and new directives at the same time, and this ticket can be closed.

 I apologize for the noise.

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Ticket URL: <https://trac.macports.org/ticket/55778#comment:3>
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