[MacPorts] #52758: asciidoc should depend on libxslt, dblatex, w3m, epubcheck

[MacPorts]

#52758: asciidoc should depend on libxslt, dblatex, w3m, epubcheck
------------------------+------------------------
 Reporter:  ryandesign  |      Owner:  neverpanic
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.3.4
 Keywords:              |       Port:  asciidoc
------------------------+------------------------
 The `a2x` program installed by the asciidoc port has these lines:

 {{{
 # External executables.
 ASCIIDOC = 'asciidoc'
 XSLTPROC = 'xsltproc'
 DBLATEX = 'dblatex'         # pdf generation.
 FOP = 'fop'                 # pdf generation (--fop option).
 W3M = 'w3m'                 # text generation.
 LYNX = 'lynx'               # text generation (if no w3m).
 XMLLINT = 'xmllint'         # Set to '' to disable.
 EPUBCHECK = 'epubcheck'     # Set to '' to disable.
 }}}

 So, should asciidoc have runtime dependencies on the ports that provide
 `xsltproc` (libxslt), `dblatex` (dblatex), `w3m` (w3m), `epubcheck`
 (epubcheck)?

 See #42517 where the libxml2 dependency was already added because `a2x`
 uses `xmllint`.

 The fop dependency has been there since changeset:2f224e8c/macports-ports

 This might fix the
 [https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/11089
 build failure of tinyproxy].

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Ticket URL: <https://trac.macports.org/ticket/52758>
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