I don't think you can fix CSV. You could define a reasonable-by-today's-standards subset - I'd say, UTF-8, 0x20 delimiters and per-lexem choice of C-style ident

I don't think you can fix CSV. You could define a reasonable-by-today's-standards subset - I'd say, UTF-8, 0x20 delimiters and per-lexem choice of C-style identifiers or string literals. But I need more structure. My format supports an arbitrary number of tables in a single file, some automated integrity checking, and direct conversion of text from/to runtime structures (e.g. C structs, possibly with automatically allocated backing buffers for variable-width datatypes) with only little boilerplate. So yes, that's a different format.