I find that when I come against issues like those that my first instinct is to define things and set standards. It does mean that you have to stop and decide something right now, but it means that when these things are done in the future then you will have consistency.
This pair-programming endeavour of ours is actually starting to set something like this into motion in our team. :) It's the first time we do this so deliberately, we as a team are already learning and adapting things.
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