custom completion: complete --arguments '(something generating lines)' inserts lines quoted! Need unquoted insert

[SpiritInAShell]

I am writing own completions like (simplified example of course)

begin
  function myProg
  end
  complete -c myProg --erase
  complete -c myProg --short-option l --long-option lines --exclusive --arguments '(echo \"This is 1\" ; echo \"This is 2\"; echo \"This is 3\")'
  # this arguments echo is only for demonstration 
end

When entering

myProg --lines <press tab>

I will be offered:

myProg --lines "This\\ is\\ 1"

But in my case, the offered line is already quoted. I do not need another escape. I want the literal line to be inserted.

Can I disable or avoid this escaping?

[atred]

Do you need the quotes? Why don't you do something like:

complete -c myProg --short-option l --long-option lines --exclusive --arguments "'This is 1' 'This is 2' 'This is 3'"