feat(fontlock): add highlighting of null keyword

hcl-emacs · Nov 16, 2023 · e8b57df · e8b57df
1 parent 25a22a6
commit e8b57df
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diff --git a/terraform-mode.el b/terraform-mode.el
@@ -77,6 +77,9 @@
   "Face for varriables."
   :group 'terraform-mode)
 
+(defconst terraform--constants-regexp
+  (concat "\\(?:^\\|[^.]\\)" (regexp-opt '("null") 'words)))
+
 (defconst terraform--block-builtins-without-name-or-type-regexp
   (rx line-start
       (zero-or-more space)
@@ -154,6 +157,7 @@
      (1 'terraform-builtin-face)
      (2 'terraform-resource-type-face t)
      (3 'terraform-resource-name-face t))
+    (,terraform--constants-regexp 1 'font-lock-constant-face)
     ,@hcl-font-lock-keywords))
 
 (defun terraform-format-buffer ()

diff --git a/test/test-highlighting.el b/test/test-highlighting.el
@@ -32,6 +32,14 @@
       keyword
       (should (face-at-cursor-p 'font-lock-constant-face)))))
 
+(ert-deftest font-lock--constants-keywords ()
+  "Syntax highlight of constant keywords"
+
+  (dolist (keyword '("null"))
+    (with-terraform-temp-buffer
+      keyword
+      (should (face-at-cursor-p 'font-lock-constant-face)))))
+
 (ert-deftest font-lock--provider-block--with-one-space ()
   "Syntax highlight of `provider' block."