[MacPorts] #40516: Two new variants + text editor modeline

[MacPorts]

#40516: Two new variants + text editor modeline
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  Reporter:  jpolmsted@…  |      Owner:  kjell.konis@…
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:  haspatch
      Port:  R            |
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Comment (by kjell.konis@…):

 Maintainer here. The R version bump in #40602

 (1) adds the text editor modeline

 (2) enables testing (i.e., sets test.run to yes). I set test.target to
 check rather than check-all because check-all requires that additional
 CRAN packages be installed in order complete cleanly

 (3) adds a test variant that installs the tests for later use

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Ticket URL: <https://trac.macports.org/ticket/40516#comment:9>
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