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Sometimes when running a Vim macro the results aren't exactly as expected. Is there a way to "debug" this?

For example, it I could slow down macro execution and see what the input was for each step it would be very easy to see the issue.

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up vote 5 down vote accepted

What I do is edit the macro, either by putting and then yanking the register in a scratch buffer, or directly on the command line (:let @q = <C-r>=string(@q)<CR>). Unless I see the error, this usually means cutting of the tail of the macro to see where it goes wrong.

You could alternatively try to intersperse [N]gs (i.e. sleep N seconds) commands, if that helps you.

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Thanks! I didn't know that you could view macro registers. It's :reg q to view the q register, for anyone else who's wondering. – Dean Jun 28 '13 at 20:12

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