[MacPorts] #61919: garbled statusline in Big Sur

[MacPorts]

#61919: garbled statusline in Big Sur
-------------------------------+-------------------------------
  Reporter:  arjanvandervelde  |      Owner:  (none)
      Type:  defect            |     Status:  new
  Priority:  Normal            |  Milestone:
 Component:  ports             |    Version:  2.6.4
Resolution:                    |   Keywords:  statusline bigsur
      Port:  screen            |
-------------------------------+-------------------------------
Description changed by arjanvandervelde:

Old description:

> Hi!
>
> I'm running into a strange issue with GNU screen built on Big Sur
> (intel). For some reason it does not correctly show the statusline. A
> binary compiled on last MacOS before Big Sur (same macports commit) works
> fine. I'm using the following screenrc:
>
> startup_message off
> mousetrack on
> defmousetrack on
> logfile /Users/vanderva/log/screenlogs/screenlog.%n
> shell -/bin/bash
> shelltitle shell
> hardstatus on
> hardstatus alwayslastline '%{= kK}[ %{G}%H %{K}][ %{G}%h %{K}][ %= %{=
> kw}%?%-Lw%?%{B}(%{W}%n*%f %t%?(%u)%?%{B})%{w}%?%+Lw%?%?%= %{K}%{B} %{w}
> ][ %l ][ %d %M %c ]%{K}'
> defutf8 on
> defscrollback 99999
> msgwait 3
> deflog on
> logtstamp on
> logtstamp after 3600
> screen -t "mac" 0
> log on
> bind '+' resize
> caption string "%?%F%{.R.}%?%3n %t%? [%h]%?"
> layout save default
> altscreen on
> vbell off
>
> see screenshots attached.

New description:

 Hi!

 I'm running into a strange issue with GNU screen built on Big Sur (intel).
 For some reason it does not correctly show the statusline. A binary
 compiled on last MacOS before Big Sur (same macports commit) works fine.
 I'm using the following screenrc:

 {{{
 startup_message off
 mousetrack on
 defmousetrack on
 logfile /Users/vanderva/log/screenlogs/screenlog.%n
 shell -/bin/bash
 shelltitle shell
 hardstatus on
 hardstatus alwayslastline '%{= kK}[ %{G}%H %{K}][ %{G}%h %{K}][ %= %{=
 kw}%?%-Lw%?%{B}(%{W}%n*%f %t%?(%u)%?%{B})%{w}%?%+Lw%?%?%= %{K}%{B} %{w} ][
 %l ][ %d %M %c ]%{K}'
 defutf8 on
 defscrollback 99999
 msgwait 3
 deflog on
 logtstamp on
 logtstamp after 3600
 screen -t "mac" 0
 log on
 bind '+' resize
 caption string "%?%F%{.R.}%?%3n %t%? [%h]%?"
 layout save default
 altscreen on
 vbell off
 }}}


 see screenshots attached.

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Ticket URL: <https://trac.macports.org/ticket/61919#comment:1>
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