[sil-mode.el] Add syntax highlighting for pack instructions.

Author: gottesmm

utils/sil-mode.el

@@ -191,6 +191,13 @@
                     "copyable_to_moveonlywrapper" "copyable_to_moveonlywrapper_addr"
                     "moveonlywrapper_to_copyable_box")
                   'words) . font-lock-keyword-face)
+   ;; pack
+   `(,(regexp-opt '("pack_length" "open_pack_element" "pack_element_get" "pack_element_set"
+                    "alloc_pack" "alloc_pack_metadata"
+                    "tuple_pack_element_addr" "tuple_pack_extract"
+                    "dynamic_pack_index" "pack_pack_index" "scalar_pack_index"
+                    "dealloc_pack" "dealloc_pack_metadata")
+                  'words) . font-lock-keyword-face)
    ;; SIL Value
    '("\\b[%][A-Za-z_0-9]+\\([#][0-9]+\\)?\\b" . font-lock-variable-name-face)
    ;; Variables