Upgrade function for casks

[chuchana]

Inspired by this answer on Ask Different, I hacked together some functionality to check for updated casks and upgrade them selectively in fish. I started to translate it to Ruby, but I have no idea how this should be integrated into homebrew:

casks = `brew cask list`.split
outdated_casks = []

casks.each do |cask|
  current_version = `#{"brew cask info #{cask} | sed -n '1p' | sed -n 's/^.*: \\(.*\\)$/\\1/p'"}`
  installed_version = `#{"ls /opt/homebrew-cask/Caskroom/#{cask}"}`
  unless installed_version == current_version
    puts "#{cask} #{installed_version} --> #{current_version}\n"
    outdated_casks.push("#{cask}")
  end
end

puts outdated_casks



casks.each do |cask|
  `#{"brew cask uninstall --force #{cask}"}`
  `#{"brew cask   install --force #{cask}"}`
end

[vitorgalvao]

Thank you, but as has been explained multiple times in multiple places, relying on brew cask list won’t work.

[chuchana]

I did not now about that. But isn't it better to have it work for most casks than not for any? Or is another implementation planned?

[vitorgalvao]

But isn't it better to have it work for most casks than not for any?

No, not at all. An inconsistent implementation does no one any good. Especially us maintainers, that would spend all day answering those bug reports.

Or is another implementation planned?

Yes, a proper implementation is planned, naturally, but not in the works.

[chuchana]

That makes sense.

Any objection to using ls /opt/homebrew-cask/Caskroom/instead of brew cask list?

[vitorgalvao]

Yes. That will break with #13201.