diff --git a/users/crumb/programs/emacs/lib/syd-project.el b/users/crumb/programs/emacs/lib/syd-project.el
index 8a1fefb..77bf8c0 100644
--- a/users/crumb/programs/emacs/lib/syd-project.el
+++ b/users/crumb/programs/emacs/lib/syd-project.el
@@ -33,6 +33,7 @@ project\"."
   (interactive)
   (require 'syd-file)
   ;; TODO: Prompt for path project root is not found.
+  ;; TODO: Respect gitignore.
   (syd-search-directory (syd-project-root)))
 
 (defun syd-project-root-find-file (file-name)
diff --git a/users/crumb/programs/emacs/modules/lang/syd-lang-clojure.el b/users/crumb/programs/emacs/modules/lang/syd-lang-clojure.el
index 7f17577..300d963 100644
--- a/users/crumb/programs/emacs/modules/lang/syd-lang-clojure.el
+++ b/users/crumb/programs/emacs/modules/lang/syd-lang-clojure.el
@@ -1,7 +1,12 @@
 ;;; syd-lang-clojure.el -*- lexical-binding: t; -*-
 
 (use-package clojure-mode
-  :mode (rx "." (or "clj" "cljs" "edn" "cljc") eol)
+  :mode (("\\.\\(clj\\|cljd\\|dtm\\|edn\\|lpy\\)\\'" . clojure-mode)
+         ("\\.cljc\\'" . clojurec-mode)
+         ("\\.cljs\\'" . clojurescript-mode)
+         ("\\(?:build\\|profile\\)\\.boot\\'" . clojure-mode))
+  :interpreter (("bb" . clojure-mode)
+                ("nbb" . clojurescript-mode))
   :config
   (add-hook 'clojure-mode-hook #'syd-lisp-mode)
   (dolist (c '(?- ?_ ?? ?! ?+ ?* ?/ ?: ?> ?< ?= ?&))
@@ -28,6 +33,10 @@
         (message "Starting CIDER server for the first time...done")
         (pop-to-buffer (cider-current-repl type))))))
 
+(defun syd-clojure-open-cljs-repl (&optional arg)
+  (interactive "P")
+  (syd-clojure-open-repl arg 'cljs))
+
 (use-package cider-mode
   :straight nil
   ;; :after clojure-mode
@@ -40,19 +49,36 @@
       #'syd-clojure-open-cljs-repl :persist t)
     (set-eval-handler! '(clojure-mode clojurec-mode clojurescript-mode)
       #'cider-eval-region))
+  :custom ((cider-show-error-buffer nil))
   :general
   (:keymaps 'cider-repl-mode-map
    :states '(normal insert)
    "C-k" #'cider-repl-backward-input
    "C-j" #'cider-repl-forward-input
    "C-s" #'cider-repl-previous-matching-input)
+  (:keymaps 'clojure-mode-map
+   :states '(normal visual motion emacs insert)
+   :major-modes t
+   :prefix syd-localleader-key
+   :non-normal-prefix syd-alt-localleader-key
+   "\"" #'cider-jack-in-cljs
+   "'" #'cider-jack-in-clj
+   "c" #'cider-connect-clj
+   "C" #'cider-connect-cljs
+   "r l" #'cider-load-buffer
+   "r n" #'cider-repl-set-ns
+   "r r" #'cider-ns-refresh
+   "r R" #'cider-restart
+   "r q" #'cider-quit
+   "h c" #'cider-cheatsheet)
   :config
   (add-hook 'cider-mode-hook #'eldoc-mode)
   (add-hook 'cider-repl-mode-hook #'syd-lisp-mode)
   (set-popup-rules!
-    `(("^\\*cider-error*" :ignore t)
+    `(("^\\*cider-error\\*" :ignore t)
       ("^\\*cider-repl" :quit nil :ttl nil)
       ("^\\*cider-repl-history" :vslot 2 :ttl nil)
+      (,(rx bol "*cider-nrepl-middleware") :slot 3 :quit t :ttl 0)
       (,(rx bol "*cider-cheatsheet*")
        :width ,(lambda (win)
                  (with-selected-window win
@@ -67,22 +93,9 @@
     (defun syd-clojure-set-handlers-h ()
       (setq-local syd-lookup-documentation-handlers
                   (list #'cider-doc))))
-  (general-define-key
-   :keymaps 'cider-mode-map
-   :states '(normal visual motion emacs insert)
-   :major-modes t
-   :prefix syd-localleader-key
-   :non-normal-prefix syd-alt-localleader-key
-   "\"" #'cider-jack-in-cljs
-   "'" #'cider-jack-in-clj
-   "c" #'cider-connect-clj
-   "C" #'cider-connect-cljs
-   "r l" #'cider-load-buffer
-   "r n" #'cider-repl-set-ns
-   "r r" #'cider-ns-refresh
-   "r R" #'cider-restart
-   "r q" #'cider-quit
-   "h c" #'cider-cheatsheet))
+
+  ;; Correctly indent some common macros.
+  (put-clojure-indent 'match 1))
 
 ;; Give different pairs of delimiters different colours.
 (use-package rainbow-delimiters