Initial commit for zsh native completion support

[b-per]

Add support for native zsh completion for the dbt command

As mentioned in issue #6:

Pros:

• Completion for models works with strings in the middle of the model names (e.g. typing invoice will match models customer_invoice and vendor_invoice
• Completion has been set up for some flags and commands (listing most of the flags available when running dbt run, dbt test and dbt docs as well as the global flags)
• Support for '+' and '@' has been replicated from the bash completion script
• [NEW] This script supports separating models with a comma, as defined in dbt 0.18

Cons:

• Currently, when running dbt run or dbt test the models will be suggested even though there is no model selection flag defined or if the model selection flag is not the last one in the list

[ghost]

@camfrout could you include proposed README updates (if any) for installation process if taking this route? i'd love to test this out but i'm not super familiar with completion functionality in zsh and don't want to accidentally bork up my dotfiles making guesses 😅

[b-per]

Sure, I have just added instructions. The easy way is if you are already using oh-my-zsh.

[ghost]

Sure, I have just added instructions. The easy way is if you are already using oh-my-zsh.

Awesome, thank you! I've got it up and running, so far working very nicely! I'll put it through its paces on client work tomorrow - thanks again this is very cool 🌻

[ghost]

i've had zero issues with this @jtcohen6 -- functions flawlessly, install was a breeze: 👍🏻 👍🏻 from me to merge

[jtcohen6]

Thanks for testing @grantwinship!

@camfrout Tiny thing: could you rename the file from _dbt to something like dbt-completion.zsh, to mirror the existing bash version?

[b-per]

Hi.

I don't think I can, it is actually part of the naming convention for ZSH completion scripts.

Source: "Completion functions for commands are stored in files with names beginning with an underscore _, and these files should be placed in a directory listed in the $fpath variable. You can add a directory to $fpath by adding a line like this to your ~/.zshrc file:"

Looking at this repo of ZSH completion scripts, we can see that all the scripts are named _<command>

[jtcohen6]

TIL! Thanks for the links @camfrout. I'm good with merging this as-is, then :)