Add imenu support for markdown-mode.

init.el

@@ -102,6 +102,7 @@ Emacs load path."
 (require 'prelude-js)
 (require 'prelude-latex)
 (require 'prelude-lisp)
+(require 'prelude-markdown)
 (require 'prelude-mediawiki)
 (require 'prelude-org)
 (require 'prelude-perl)

modules/prelude-markdown.el

@@ -0,0 +1,18 @@
+(prelude-ensure-module-deps '(markdown-mode))
+
+(setq markdown-imenu-generic-expression
+      '(("title"  "^\\(.*\\)[\n]=+$" 1)
+        ("h2-"    "^\\(.*\\)[\n]-+$" 1)
+        ("h1"   "^# \\(.*\\)$" 1)
+        ("h2"   "^## \\(.*\\)$" 1)
+        ("h3"   "^### \\(.*\\)$" 1)
+        ("h4"   "^#### \\(.*\\)$" 1)
+        ("h5"   "^##### \\(.*\\)$" 1)
+        ("h6"   "^###### \\(.*\\)$" 1)
+        ("fn"   "^\\[\\^\\(.*\\)\\]" 1)))
+
+(add-hook 'markdown-mode-hook
+          (lambda ()
+            (setq imenu-generic-expression markdown-imenu-generic-expression)))
+
+(provide 'prelude-markdown)