Ready, probably :)

.pre-commit-config.yaml

@@ -1,5 +1,5 @@
 -   repo: git://github.com/pre-commit/pre-commit-hooks
-    sha: v0.4.2
+    sha: v0.6.0
     hooks:
       -   id: check-yaml
       -   id: end-of-file-fixer

README.md

@@ -1,4 +1,4 @@
-# pre-commit-terraform hooks
+# pre-commit-terraform hook
 
 Single [pre-commit](http://pre-commit.com/) hook which runs `terraform fmt` on `*.tf` files.
 
@@ -11,4 +11,4 @@ An example `.pre-commit-config.yaml`:
     -   id: terraform_fmt
 ```
 
-Enjoy the clean code!
+Enjoy the clean code!

hooks.yaml

@@ -1,6 +1,7 @@
 -   id: terraform_fmt
     name: Terraform fmt
     description: Rewrites all Terraform configuration files to a canonical format.
-    entry: tffmthook.sh
+    entry: terrraform_fmt.sh
     language: script
     files: \.tf$
+    exclude: \.terraform\/.*$

terrraform_fmt.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+for file in "$@"; do
+  terraform fmt `dirname $file`
+done

tffmthook.sh

@@ -1,3 +0,0 @@
-#!/usr/bin/env bash
-
-[[ -z $(terraform fmt "$@") ]]