Terraform 0.15.

Terraform 0.15 removed the option to specify the directory as an
argument. Instead it offers a new optional parameter. Instead of dealing
with different versions in specific ways, just cd to that directory.

tff

@@ -3,7 +3,10 @@ set -eu
 
 command -v terraform >/dev/null || { echo "Can't find the terraform binary, aborting." >&2; exit 1; }
 
+original_pwd="$PWD"
 for i in "$@"
 do
-    terraform fmt "$(dirname "$i")" || true
+    cd "$(dirname "$i")"
+    terraform fmt || true
+    cd "$original_pwd"
 done

tfv

@@ -6,10 +6,13 @@ command -v terraform >/dev/null || { echo "Can't find the terraform binary, abor
 export TF_INPUT='0'
 export TF_IN_AUTOMATION='1'
 
+original_pwd="$PWD"
 for i in "$@"
 do
-    terraform init -backend=false "$(dirname "$i")" || { code='1'; continue; }
-    terraform validate "$(dirname "$i")" || code='1'
+    cd "$(dirname "$i")"
+    terraform init -backend=false || { code='1'; continue; }
+    terraform validate || code='1'
+    cd "$original_pwd"
 done
 
 exit "${code:-0}"