Replaces all emoji within a string with ":#{NAME_OF_EMOJI}:"

replace_emoji.rb

require 'unicode/emoji'
require 'gemoji'

# Replaces all emoji within a string with ":#{NAME_OF_EMOJI}:"
# Ex:    "here's a sheep emoji 🐑" 
#     => "here's a sheep emoji :sheep:"
def replace_emoji(str)
  str.scan(Unicode::Emoji::REGEX).each do |emoji|
    emoji_name = Emoji.find_by_unicode(emoji).name
    puts "#{emoji} => #{emoji_name}"
    str.gsub!(emoji, ":#{emoji_name}:")
  end
  return str
end