Homebrew external-command script to show syntax-highlited formulae, using Pygments

brew-show.sh

#!/usr/bin/env bash
#:  * `show` <formula> [<formula>...]:
#:     Show the syntax-highlighted source of the specified formulae

function brew() {
    "${HOMEBREW_PREFIX}/bin/brew" "$@"
}

pygmentize="$(which pygmentize)"

if [[ ! -x $pygmentize ]]; then
    echo "* ERROR: The “pygmentize” command was not found"
    echo "* ERROR: Try installing the Python “pygments” package"
    return 1
else
    for argument in "$@"; do
        brew cat "${argument}" | "${pygmentize}" -l ruby
        echo ""
    done
fi

• Install this by renaming it brew-show (without the “.sh”), and copying it to a directory somewhere included in your $PATH
• Invoke with brew show <formula> e.g. brew show cmake

• Supports multiple formula-name arguments (versus e.g. the brew cat command)