I've actually started working on something very similar: https://github.com/tmccombs/ssv https://github.com/tmccombs/ssv So far it's just a python library, but

I've actually started working on something very similar: https://github.com/tmccombs/ssv https://github.com/tmccombs/ssv So far it's just a python library, but I'm planning on adding editor plugins at least for vim, vscode and maybe emacs, libraries for additional languages, and maybe some cli commands for it. One distinction from the OP is the delimiters also include a tab (for fields) or newline (for records) by default (but not in "compact" mode). That has the benefit that the files are at least readable with editors and pagers that aren't aware of the format.