Just throwing my hat in the ring as absolutely no one of influence: I
think reverting functionality that is understood to be in a particular
version of a package is inviting breakage.

If VTE 0.48.x is understood to have PCRE2 support, as announced by the
VTE developers, then applications that depend on it are free to assume
they can use that functionality. If Ubuntu patches that out, then you
are going to break code that makes such an assumption. What's going on
with Tilix is a good example of this.

The best option here is #1, to add PCRE2 into main. Based on my reading
of #1636666, it really isn't that big a deal, but if the maintainers are
dead set against it, then do #2 leave gnome terminal and VTE at their
lower version numbers until there is more impetus to switch. #3 is
objectively the wrong decision.

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https://bugs.launchpad.net/bugs/1666264

Title:
  FFe: Update gnome-terminal to 3.24 and vte to 0.48

Status in gnome-terminal package in Ubuntu:
  Fix Released
Status in vte2.91 package in Ubuntu:
  Fix Released

Bug description:
  gnome-terminal and vte are still at their 3.20 (and 0.44) versions
  because they now hard-depend on pcre2, but the pcre2 MIR (LP:
  #1636666) has stalled because there is already one version of pcre in
  main and it would be a major task to convert all of main to use pcre2.

  So I reverted 3 commits for gnome-terminal and 5 for vte to make that
  MIR less urgent. I am concerned about the long-term maintainability of
  this approach - the vte patch is over 1600 lines.

  gnome-terminal 3.22 and vte 0.46 have been tested in the GNOME3
  Staging PPA for yakkety and zesty for months. I am not aware of any
  issues from that. This is slightly different since I haven't tested
  those versions without pcre2 until this weekend.

  The development cycle for gnome-terminal and vte has been fairly quiet
  so I believe it's safe to go ahead and update gnome-terminal to
  3.23.90 and vte to 0.47.90.

  https://git.gnome.org/browse/gnome-terminal/log
  https://git.gnome.org/browse/vte/log

  The packages are currently available for testing at

  
https://launchpad.net/~gnome3-team/+archive/ubuntu/gnome3-staging/+packages?field.series_filter=zesty

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