feat: Edit list type

[alanbccoe]

I'm trying to programmatically modify tfvars files, but it appears attribute append doesn't work for them.

E.g. given this file:

owner = [
  "tom",
  "dave"
]

I was hoping I could append a new item with:

hcledit -f terraform.tfvars attribute append owner '"me"'

but this just replaces the whole list to give owner = "me"

It'd be great if this program supported append/rm/set operations just on terraform vars in tfvars files.

Get does seem to work already - I haven't tried the others yet since I need append.

[minamijoyo]

Thank you for opening this.

It's a missing feature to add an element to list. To implement this, we need to a feature to hclwrite, which is a library we depends on.