about bare infinitive

[Jerry Yoon]

I understand why we don't see 'to' in "All I want to do is play basketball."


However, today I've read a new strangely looking(to me) sentence below.




"But all we’ve done is written(?) and distributed(?) electronic data."





I think that not only is 'to' omitted but also 'have' is omitted.


If just 'to' is omitted in that sentence, written(pp) and distributed(pp) are awkward, I think.

I strongly suspect that 'to have' has been omitted but is it possible?



If it is so, could you tell some examples?

 

[Grumpy Old Man]

The sentence isn't good English. It should read: All we've done is write and distribute electronic data.

GOM

 

[entangledbank]

It sounds fine (though colloquial) to me to omit the repeated 'we've': What we've done is we've written a program. What we've done is written a program.

 

[Ivan_I]

It sounds fine (though colloquial) to me to omit the repeated 'we've': What we've done is we've written a program. What we've done is written a program.

Which one is more idiomatic?

What we've done is written a program.
What we've done is write a program.