It's not just a technical issue. longer lines are harder for the human mind to parse out. In text, 50-60 characters are ideal. I think more than 80 in code is pushing it. Having said that, I agree that it's not something to be too dogmatic over. We have our linter set to 125 cpl.
I'm pretty fond of 80 characters being the limit.
I have heard of the 50-60 being ideal, but I thought that was more for reading sentences than text in general. I could be wrong though, I haven't looked at the studies on it.
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