csv-peek - A 700-Line Rust CLI That Pretty-Prints CSV in the Terminal With a Hand-Rolled RFC 4180 Parser, Type Inference, and One Dependency

It looks like you have a well-structured and efficient Rust program for handling CSV files, with several key features that make it robust and user-friendly. Here's a summary of the main points from your description:

1. Automatic Delimiter Detection: The program automatically detects the delimiter used in the CSV file by scanning the first line and counting occurrences of common delimiters (,, \t, ;, |). This makes it more versatile for handling different types of input files without requiring manual configuration.

2. TTY Detection: Instead of using an external crate like atty, your program uses std::io::IsTerminal to detect whether the output is being piped or redirected, and disables color output accordingly. It also respects the NO_COLOR environment variable for controlling color output manually.

3. Type Inference and Parsing:

   • The program infers column types based on the first 10 lines of data.
   • It uses a simple heuristic to determine whether each column should be treated as text or numeric, which helps in rendering the CSV content more meaningfully.

4. Rendering with Color:

   • If color output is enabled (by default if the terminal supports it), the program renders

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