So this is what "3.403 Text File" says: A file that contains characters organized into zero or more lines [so characters with no newlines are OK] No NUL, and

So this is what "3.403 Text File" says: A file that contains characters organized into zero or more lines [so characters with no newlines are OK] No NUL, and lines (delimited by and including newline) not exceeding LINE_MAX bytes.