tokens of heredocs

tokens_of_heredocs.md

Examples for https://twitter.com/koic/status/1772524244896825639

<<

<<TXT
  first
  second
  third
TXT

$ ruby -y example.rb | grep 'Reading a token' | wc -l
       5

<<-

<<-TXT
  first
  second
  third
TXT

$ ruby -y example.rb | grep 'Reading a token' | wc -l
       5

<<~

<<~TXT
  first
  second
  third
TXT

$ ruby -y example.rb | grep 'Reading a token' | wc -l
       7