I wanted to write a function for reading the keyboard in Ruby, but it doesn’t understand shift, what’s wrong?

Question

ruby

Have a function

def read_char
  STDIN.echo = false
  STDIN.raw!

  input = STDIN.getc.chr
  
  return input
end

She does not understand all the keys.
And how to adapt it, under say 'shift'.
How to track combinations? by timeout?

Answer 1

line = STDIN.readline # идёт набор символов до нажатия клавиши <Enter>
lines = STDIN.read # идёт набор символов до нажатия <Ctrl-D>

?
zetcode.com/lang/rubytutorial/io

Answer 2

https://msdn.microsoft.com/en-us/library/aa243025(...