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6 changes: 5 additions & 1 deletion Library/Homebrew/brew.rb
Original file line number Diff line number Diff line change
Expand Up @@ -111,9 +111,13 @@ class MissingEnvironmentVariables < RuntimeError; end

odie "Unknown command: #{cmd}" if !possible_tap || possible_tap.installed?

brew_uid = HOMEBREW_BREW_FILE.stat.uid
tap_commands = []
tap_commands += %W[/usr/bin/sudo -u ##{brew_uid}] if Process.uid.zero? && !brew_uid.zero?
# Unset HOMEBREW_HELP to avoid confusing the tap
ENV.delete("HOMEBREW_HELP") if help_flag
safe_system HOMEBREW_BREW_FILE, "tap", possible_tap.name
tap_commands += %W[#{HOMEBREW_BREW_FILE} tap #{possible_tap}]
safe_system(*tap_commands)
ENV["HOMEBREW_HELP"] = "1" if help_flag
exec HOMEBREW_BREW_FILE, cmd, *ARGV
end
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