fish shell support

[lordlycastle]

When you do cod init --help it lists that you can specify fish as an argument but no script is returned when fish is used.

So does this tool have FISH shell support? If not I would like to request it as it is very popular shell.

Thanks!

[dim-an]

First version of cod supported fish since it was shell on my local machine those days.

But then I decided to focus my efforts on zsh and bash (and switched to zsh myself).

Anyway a agree support of fish should be added.

[lordlycastle]

Awesome. So what is needed for this? How does this work? Do we need a hook to feed it all the commands we run and it filters for anything with -h|--help? Or does it read the history file?

Would help in any way I can!

[dim-an]

You can take a look at existing implementation for bash.

We need to implement an interface ShellScriptGenerator that generates a bunch of shell code.

• GetPreamble returns initialization code that defines hooks and helper functions
• GenerateCompletions is used to generate shell code that notifies shell about completions for newly learned command
• ResetCommand removes cod completions from givven command.

First of all we need a hook that is launched after command execution (check __cod_postexec_bash). This hook:

• gets last executed command
• checks its exit status (we don't check commands with nonzero exitcode)
• feed command into cod api postexec ... (this api call checks if call looks like help invocation and shows UI)
• calls cod api poll-updates to poll updates (e.g. we learned new command from other terminal window and we want to get notification about it).

About GeneratesCompletions. This script doesn't actually feeds shell with bunch of learned flags. Instead it asks shell to use cod api complete-words to get required completions. This api call unifies completion generation for all shells and can do complex logic while generating list of completions.