Add Terraform filetypes

[thiagowfx]

https://github.com/beyondgrep/ack3/blob/dev/CONTRIBUTING.md:

• The name of the filetype: Terraform
• What the definition of the filetype would be, taken from the .ackrc file that you've been using: .tf, .tfvars
• URL of a web page that discusses what the filetype is: https://www.terraform.io/
• What the file contains, and why it should be a filetype: terraform configuration, which is its own domain language
• How widely used this filetype will be: Terraform is a quite popular IaC tool

[petdance]

What the definition of the filetype would be, taken from the .ackrc file that you've been using: .tf, .tfvars

Can you please paste your .ackrc in here?

[petdance]

URL of a web page that discusses what the filetype is: https://www.terraform.io/

Please point me to a page that describes this file format.

[thiagowfx]

Can you please paste your .ackrc in here?

# terraform
--type-add=tf=.tf,.tfvars

Please point me to a page that describes this file format.

• .tf: https://developer.hashicorp.com/terraform/language/files
• .tfvars: https://developer.hashicorp.com/terraform/language/values/variables

[petdance]

Is there a different between the .tf and .tfvars? Why are they combined in one fileytype?

I'm thinking it might make more sense to be --terraform than --tf, for clarity, if not brevity.

[thiagowfx]

Let me make an analogy with shell: .tf. is like .sh, where you put in the bulk of your terraform config.

.tfvars is like .env or .envrc where you set / populate variables (environment variables in case of shell).

[thiagowfx]

--terraform is more verbose but it's indeed unambiguous, that would be fine too

[petdance]

So .tf and .tfvars are the same format, but the extension you choose is based on its usage and convention?

[thiagowfx]

I chose tf initially merely because it's shorter.

In hindsight, --terraform is better as it can unambiguously refer to both formats.

Again, if I were to make an analogy with shell, --shell encompasses .bash, .zsh, .sh, etc. Whereas --sh is short to type but it's not apparently obvious whether it refers to only .sh or "any shell extension".

So let's go with your suggestion :P

--type-add=terraform=.tf,.tfvars

[petdance]

Done, thanks, 9fd9834