Brew Completions Versions Save

#3: Bugfix: check cache existence before using it (by @dikti)

• Better completions for available formulae using Homebrew cache and Ruby for parsing JSON (see https://github.com/laughedelic/brew-completions/pull/2):
  • it's notably faster than brew search
  • it also provides descriptions for each formula, which is useful when you are choosing what to install
• Completions for available casks should be much faster now, because brew cask search doesn't perform online search anymore (see https://github.com/Homebrew/brew/pull/3084)

First public release. It supports

• all 75 core brew commands (85 with aliases) and all their options
• official external commands with their subcommands and options:
  • bundle: Bundler for non-Ruby dependencies from Homebrew
  • cask: Install macOS applications distributed as binaries
  • services: Integrates Homebrew formulae with macOS's launchctl manager
• besides basic options completion, it also takes into account when some options are mutually exclusive or depend on other options

It is mostly based on the Homebrew documentation: manpage + brew help, but it also includes several "undocumented" commands, supported by Homebrew.