diff --git a/modules/lang/markdown/autoload.el b/modules/lang/markdown/autoload.el
index c0445c35e..1ae173fc1 100644
--- a/modules/lang/markdown/autoload.el
+++ b/modules/lang/markdown/autoload.el
@@ -1,26 +1,5 @@
 ;;; lang/markdown/autoload.el -*- lexical-binding: t; -*-
 
-;; Implement strike-through formatting
-(defvar +markdown--regex-del
-  "\\(^\\|[^\\]\\)\\(\\(~\\{2\\}\\)\\([^ \n	\\]\\|[^ \n	]\\(?:.\\|\n[^\n]\\)*?[^\\ ]\\)\\(\\3\\)\\)")
-
-;;;###autoload
-(defun +markdown/insert-del ()
-  "Surround region in github strike-through delimiters."
-  (interactive)
-  (let ((delim "~~"))
-    (if (markdown-use-region-p)
-        ;; Active region
-        (cl-destructuring-bind (beg . end)
-            (markdown-unwrap-things-in-region
-             (region-beginning) (region-end)
-             +markdown--regex-del 2 4)
-          (markdown-wrap-or-insert delim delim nil beg end))
-      ;; Bold markup removal, bold word at point, or empty markup insertion
-      (if (thing-at-point-looking-at +markdown--regex-del)
-          (markdown-unwrap-thing-at-point nil 2 4)
-        (markdown-wrap-or-insert delim delim 'word nil nil)))))
-
 ;;;###autoload
 (defun +markdown-flyspell-word-p ()
   "Return t if point is on a word that should be spell checked.
@@ -95,3 +74,36 @@ available. Returns its exit code."
                          shell-file-name nil output-buffer nil
                          shell-command-switch
                          exe)))
+
+;;
+;;; Commands
+
+;;;###autoload
+(defun +markdown/insert-del ()
+  "Surround region in github strike-through delimiters."
+  (interactive)
+  (let ((regexp "\\(^\\|[^\\]\\)\\(\\(~\\{2\\}\\)\\([^ \n	\\]\\|[^ \n	]\\(?:.\\|\n[^\n]\\)*?[^\\ ]\\)\\(\\3\\)\\)")
+        (delim "~~"))
+    (if (markdown-use-region-p)
+        ;; Active region
+        (cl-destructuring-bind (beg . end)
+            (markdown-unwrap-things-in-region
+             (region-beginning) (region-end)
+             regexp 2 4)
+          (markdown-wrap-or-insert delim delim nil beg end))
+      ;; Bold markup removal, bold word at point, or empty markup insertion
+      (if (thing-at-point-looking-at regexp)
+          (markdown-unwrap-thing-at-point nil 2 4)
+        (markdown-wrap-or-insert delim delim 'word nil nil)))))
+
+
+;;
+;;; Advice
+
+;;;###autoload
+(defun +markdown-disable-front-matter-fontification-a (&rest _)
+  "Prevent fontification of YAML metadata blocks in `markdown-mode'.
+This prevents a mis-feature wherein if the first line of a Markdown document has
+a colon in it, then it's distractingly and usually wrongly fontified as a
+metadata block. See https://github.com/jrblevin/markdown-mode/issues/328."
+  (ignore (goto-char (point-max))))