Hi,
I AFAIK handling of hidden files between modules is not supported - hidden files are simply ignored during initialization of modules.

Hi @denis256, thanks for response.
I think hidden files are still getting passed, because part of my root terragrunt config looks like this, and its working fine:

locals {
  # Automatically load account-level variables
  account_vars = read_terragrunt_config(find_in_parent_folders(".account.hcl"))

  # Automatically load region-level variables
  region_vars = read_terragrunt_config(find_in_parent_folders(".region.hcl"))

  # Extract the variables we need for easy access
  bucket    = local.account_vars.locals.bucket
  region   = local.region_vars.locals.region
}

Meaning I do load hidden files between modules.

Hello,
after a couple of tests, I think it is a bug since value of TERRAGRUNT_CONFIG is ignored

From what I see, the logic for identification of default terragrunt file should be updated to fetch value from --terragrunt-config / TERRAGRUNT_CONFIG

https://github.com/gruntwork-io/terragrunt/blob/master/config/config.go#L498

https://github.com/gruntwork-io/terragrunt/blob/master/config/config.go#L28

Hi @denis256, thanks for testing this out!
I see you've labeled it as a "good first issue", I can try and fix that in next couple of days if it's ok.

Resolved in v0.50.15 release.