Merge pull request #7120 from MikeMcQuaid/args-tweaks

Library/Homebrew/cli/args.rb

Library/Homebrew/cli/parser.rb

Library/Homebrew/cmd/--cache.rb

Library/Homebrew/cmd/--cellar.rb

Library/Homebrew/cmd/--env.rb

Library/Homebrew/cmd/--prefix.rb

Library/Homebrew/cmd/--repository.rb

Library/Homebrew/cmd/analytics.rb

Library/Homebrew/cmd/cat.rb

Library/Homebrew/cmd/cleanup.rb

Library/Homebrew/cmd/command.rb

Library/Homebrew/cmd/deps.rb

Library/Homebrew/cmd/desc.rb

Library/Homebrew/cmd/doctor.rb

Library/Homebrew/cmd/fetch.rb

Library/Homebrew/cmd/gist-logs.rb

Library/Homebrew/cmd/home.rb

Library/Homebrew/cmd/info.rb

Library/Homebrew/cmd/install.rb

Library/Homebrew/cmd/link.rb