Author comes to bemoan preface written in Spain with lines repeated (5,4)

'author comes to bemoan preface written' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'spain with lines repeated' is the wordplay.
I cannot really understand how this works, but
'spain' could be 'e' (abbreviation for Espana) and 'e' is found within the answer.
'lines' could be 'll' (two abbreviations for line) and 'll' is found in the answer.
This may be the basis of the clue (or it may be nonsense).

'in' acts as a link.

Can you help me to learn more?