[MacPorts] #44805: Added livecheck to mksh

[MacPorts]

#44805: Added livecheck to mksh
-----------------------------+---------------------------------
  Reporter:  mschamschula@…  |      Owner:  macports-tickets@…
      Type:  enhancement     |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.3.1
Resolution:                  |   Keywords:  haspatch maintainer
      Port:  mksh            |
-----------------------------+---------------------------------

Comment (by ryandesign@…):

 I think your second backslash migrated a bit:

 {{{
 ${name}-(\[R0-9.\abcdefg]+)${extract.suffix}
 }}}

 Note how when you run livecheck, the "\a" disappears from the regex
 (because an escaped "a" has no meaning in regex syntax):

 {{{
 DEBUG: The regex is "mksh-([R0-9.bcdefg]+).tgz"
 }}}

 The backslash belongs before the closing square bracket:

 {{{
 ${name}-(\[R0-9.abcdefg\]+)${extract.suffix}
 }}}

 Also, note that you're defining a character class here. You're saying you
 want to match a sequence of 1 or more characters from the set "0, 1, 2, 3,
 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, g, R, period", in any order. Looking
 at the [https://www.mirbsd.org/MirOS/dist/mir/mksh/ download directory], I
 think we can be more precise than that. All the existing versions begin
 with "R", then have at least one digit, and then optionally a letter
 suffix. So we could write:

 {{{
 ${name}-(R\[0-9\]+\[a-z\]*)${extract.suffix}
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/44805#comment:1>
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