Delighted to finally have vi functionality and thanks for adding it because it is the one thing I hated about Xcode, but unfortunately it does still need a bit of work on some features. There also appears to be a fault with "d", because "dw" should delete to the end of the current word, but it seems to delete the whole line? One hugely important feature that appears to be missing is the ability to press "." to repeat the last action. I agree with other posters that "m" should be there.

Wishing to update my comment above, rather than leave it as a sub-posting that might be missed: If you use dw to deletes the last word on a line (with no punctuation following it) then it will delete the whole of that line and the line below it. Also if you search using / and find a word but then step back before that word when you press n it skips the word. For example create the line: my big test test Search for the word test using /test and the first time it might take you to the first or second occurrence of the word "test", but if you then move the pointer back to the start of the line (or even further up the document) and then press n it moves the pointer to the start of the second occurrence of "test" not the first. In my tests pressing 'n' always seems to skip the first occurrence and jump to the second, but then if you press n again it will loop round to the first occurrence.