diff --git a/gists.org b/gists.org
index 7ec35ee..b145e64 100644
--- a/gists.org
+++ b/gists.org
@@ -623,6 +623,21 @@ An improved version was [[https://github.com/xenodium/dwim-shell-command/commit/
                "\n")
 #+end_src
 
+* Run code when opening a file with a certain name :emacs:
+
+Based on an answer at the [[https://emacs.stackexchange.com/a/77480/34645][Emacs StackExchange]], to have some code executed for files that have no specific extension or mode set. For example, to have =yaml-mode= enabled when opening a /.clang-format/ file:
+
+#+begin_src elisp :tangle gists/find-file-hook-for-certain-filenames.el
+  (setq my/setup-functions-alist '((".clang-format" . yaml-mode)))
+
+  (defun my/file-setup ()
+    (when-let* ((filename (file-name-nondirectory (buffer-file-name)))
+                (f (map-elt my/setup-functions-alist filename)))
+      (funcall f)))
+
+  (add-hook 'find-file-hook #'my/file-setup)
+#+end_src
+
 * Meta
 ** License
 
diff --git a/gists/find-file-hook-for-certain-filenames.el b/gists/find-file-hook-for-certain-filenames.el
new file mode 100644
index 0000000..9301318
--- /dev/null
+++ b/gists/find-file-hook-for-certain-filenames.el
@@ -0,0 +1,8 @@
+(setq my/setup-functions-alist '((".clang-format" . yaml-mode)))
+
+(defun my/file-setup ()
+  (when-let* ((filename (file-name-nondirectory (buffer-file-name)))
+              (f (map-elt my/setup-functions-alist filename)))
+    (funcall f)))
+
+(add-hook 'find-file-hook #'my/file-setup)