1 files changed, 31 insertions, 0 deletions
diff --git a/users/aspen/emacs.d/terraform.el b/users/aspen/emacs.d/terraform.el
new file mode 100644
index 000000000000..2d69c9bad9db
--- /dev/null
+++ b/users/aspen/emacs.d/terraform.el
@@ -0,0 +1,31 @@
+;;; -*- lexical-binding: t; -*-
+
+(add-hook 'terraform-mode-hook #'terraform-format-on-save-mode)
+
+(defun packer-format-buffer ()
+  (interactive)
+  (let ((buf (get-buffer-create "*packer-fmt*")))
+    (if (zerop (call-process-region (point-min) (point-max)
+                "packer" nil buf nil "fmt" "-"))
+        (let ((point (point))
+              (window-start (window-start)))
+          (erase-buffer)
+          (insert-buffer-substring buf)
+          (goto-char point)
+          (set-window-start nil window-start))
+      (message "packer fmt failed: %s" (with-current-buffer buf (buffer-string))))
+    (kill-buffer buf)))
+
+(define-minor-mode packer-format-on-save-mode
+  "Run packer-format-buffer before saving the current buffer"
+  :lighter nil
+  (if packer-format-on-save-mode
+      (add-hook 'before-save-hook #'packer-format-buffer nil t)
+    (remove-hook 'before-save-hook #'packer-format-buffer t)))
+
+(defun maybe-init-packer ()
+  (interactive)
+  (when (s-ends-with-p ".pkr" (file-name-base (buffer-file-name)))
+    (packer-format-on-save-mode)))
+
+(add-hook 'hcl-mode-hook #'maybe-init-packer)