cobra VS readline

We can use the flag with --date or -date, Go already does the automatic check. We can make our entire boilerplate with this approach, but let's make it a little easier and use the Cobra CLI package.

In this tutorial, we'll walk through the process of creating a simple command-line tool similar to curl using Go and Cobra, a CLI library for Go.

I use https://github.com/spf13/cobra religiously for this kind of thing - it handles all the annoying corner cases of parsing flags, and also has an intuitive notion of subcommands (with basic usage/help text generated) for picking which task you want to run with positional arguments.

We recently chose cobra[1] to create a cli application. It comes with so many best practices already packaged like autocompletions, help texts etc. etc.

[1]: https://github.com/spf13/cobra

github.com/spf13/cobra

I looked at the docs: https://cobra.dev/ ... and there are only examples on how to add new flags.

For installing Cobra-CLI you can go to Cobraor run go install github.com/spf13/cobra-cli@latest in the terminal.

In my build phase, I compile the source to create a k3sup binary and I also run the binary to generate shell script completions. Give kudos to this functionality which comes from spf13/cobra Go library for CLIs.

NWA is a command-line tool built on cobra. Here's an overview of NWA's commands:

That's nice, were you aware of readline?

Do you want to build an interactive shell or a cli tool? For a custom shell I have used https://github.com/chzyer/readline before, but I did not work on it a lot.

I also wanted custom completions based on context and this readline implementation was decent for that.

On first glance, it seems like the Mac layout would be less convenient with Linux due to the alt/option key being further from the spacebar and more awkward to hit with your thumb. This makes a lot of commonly used keybindings (such as the standard readline keybindings, https://github.com/chzyer/readline/blob/master/doc/shortcut.md, commonly used in bash and other shells amongst other applications) harder to hit. Linux GUI applications use alt/option more frequently than super/command as well.

The authors keep a crib sheet here: https://github.com/chzyer/readline/blob/master/doc/shortcut.md

but that's the readline shortcuts which are the same no matter which Unix terminal you are using, on macOS, Linux, cygwin, git bash, WSL...

https://github.com/chzyer/readline/blob/master/doc/shortcut....