have terraform completion support also OpenTofu

Author: Ira Abramov

completion/available/terraform.completion.bash

@@ -1,10 +1,19 @@
 # shellcheck shell=bash
 
-# Make sure terraform is installed
-_command_exists terraform || return
+if _command_exists terraform; then
 
-# Don't handle completion if it's already managed
-complete -p terraform &> /dev/null && return
+	# Don't handle completion if it's already managed
+	complete -p terraform &> /dev/null && return
 
-# Terraform completes itself
-complete -C terraform terraform
+	# Terraform completes itself
+	complete -C terraform terraform
+
+elif _command_exists tofu; then
+
+	# Don't handle completion if it's already managed
+	complete -p tofu &> /dev/null && return
+
+	# OpenTofu completes itself
+	complete -C tofu tofu
+
+fi