Bbedit can handle text files that would choke most other editors. I'm sure it has it's limits (and not having line breaks usually pushes editors to that as that is how they segment their data) but it is what you want if you are working with large text files.Ah thanks for the link! The specialized features are geared towards programmers although the price is totally reasonable if not a bit low. I am surprised this company still in business 30 years later with 90% of the features free. They almost have no other app to sell.
Maybe I am noob, but I opened a text file and it seems that you can write infinitely horizontally.