I regularly need to hand-edit tabular data I have generated from other data when it turns out there are a few weird cases I didn't handle right. I do a lot of o

I regularly need to hand-edit tabular data I have generated from other data when it turns out there are a few weird cases I didn't handle right. I do a lot of one-off data processing in several stages, so it's not just a question of fixing the generator. If I want to edit the structure, sure, I'll take it into Sheets, but for data that's slightly weird, a text editor or shell pipe is often faster.