At my billing rate "15 days straight" is approximately equal to a low end BMW. So I think tabdo/bufdo will have to do for now. At least until I get a salaried job and can learn the rest at my employer's expense.
I do think there's Pareto principle at play with all this obscure stuff. Knowing 20% gets you 80% of the benefit, every additional percent gets you exponentially smaller fraction of the remaining 20%. That's how I play it anyway. I don't feel like I'm any less productive with my 20%.
It doesn’t take 100% of your time to learn vim. You just work 20% slower while you are intensely learning, then you work back at 100% for a while, then you work at 120% after you have internalized everything.
Oh no, I learn "something new" every day. It's just not related to text editing. Don't get me wrong, I'm pretty good at editing in vim. After all, it's been my editor of choice for the last 15 years or so, and I see no reason why it would not remain in that role indefinitely. I'm just not convincing that learning the more obscure stuff is valuable.
I do think there's Pareto principle at play with all this obscure stuff. Knowing 20% gets you 80% of the benefit, every additional percent gets you exponentially smaller fraction of the remaining 20%. That's how I play it anyway. I don't feel like I'm any less productive with my 20%.