We used to wrap code at 80 columns to make things easier to read on a terminal. Graphic text editors and large monitors eliminated the need for it.
But now we need to wrap at 47 to make code readable in phones, which is where most people will be able to read it.
I still wrap at 80 so I can fit 3 panes on a screen.
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I am actually liking the exercise of 47. It keeps you in check. Readability is much better.
I think 47 is overdoing it. I do 60/64, still perfectly readable on a phone.
