[MacPorts] #56664: enable diff-highlight in git, with variant

[MacPorts]

#56664: enable diff-highlight in git, with variant
--------------------------+----------------------
  Reporter:  iEFdev       |      Owner:  ci42
      Type:  enhancement  |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:  haspatch
      Port:  git          |
--------------------------+----------------------

Comment (by reneeotten):

 it looks like [https://github.com/macports/macports-
 ports/commit/16abf7d2bb7e520d69a99c5a48f68a15cb374143 this commit]
 (followed by [https://github.com/macports/macports-
 ports/commit/9e569373784542196fed3005f92eb5b0e249755f this one]) resolved
 this ticket, correct?

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Ticket URL: <https://trac.macports.org/ticket/56664#comment:6>
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