What is “re2” Package?

Alternative to backtracking PCRE-style regular expression engines
For more details: https://github.com/google/re2

Installation

• Open Terminal by pressing command+space then type terminal and hit Enter key.
• Install homebrew first.

  ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null

• Install re2.

  brew install re2

Now, use re2!