From c3086244fe11d21898d550bdc9d2ee72d4f5ee61 Mon Sep 17 00:00:00 2001
From: Henrik Lissner <henrik@lissner.net>
Date: Sun, 8 May 2016 18:29:07 -0400
Subject: [PATCH] Add extra-tags.el (wip)

---
 modules/extra-tags.el | 48 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 modules/extra-tags.el

diff --git a/modules/extra-tags.el b/modules/extra-tags.el
new file mode 100644
index 000000000..92dd7e966
--- /dev/null
+++ b/modules/extra-tags.el
@@ -0,0 +1,48 @@
+;;; extra-tags.el
+
+;; WIP
+
+(defvar narf-ctags-alist
+  '((ruby-mode :exec "ripper-tags -R -f %t --emacs")
+    (c++-mode :ext "cpp")
+    (c-mode :ext "c")
+    (all :exec "find . -type f -iname \"*.%e\" | ctags -e -f %t -")
+    ;; TODO add c-mode/c++-mode ctags
+    ))
+
+
+(add-hook 'find-file-hook 'narf|init-tags)
+(defun narf|init-tags ()
+  (awhen (narf/tags-p)
+    (setq tags-table-list (list it))))
+
+;; TODO
+;; (defun narf/tags-generate ()
+;;   (interactive)
+;;   (let ((command (assoc major-mode narf-ctags-alist))
+;;         (default-directory (narf/project-root)))
+;;     (unless command
+;;       (user-error "No tag generator for %s" major-mode))
+;;     (async-shell-command command "*narf:generate-tags*")))
+
+;;;###autoload
+(defun narf/find-def ()
+  (interactive)
+  (let ((orig-pt (point))
+        (orig-file (buffer-file-name)))
+    (cond ((and (narf/tags-p)
+                (progn (call-interactively 'helm-etags-select)
+                       (and (/= orig-pt (point))
+                            (f-same? orig-file buffer-file-name)))))
+          ((progn (dumb-jump-go)
+                  (and (/= orig-pt (point))
+                       (f-same? orig-file buffer-file-name))))
+          (t (call-interactively 'evil-goto-definition)))))
+
+;;;###autoload
+(defun narf/tags-p ()
+  (let ((path (expand-file-name ".tags" (narf/project-root))))
+    (and (f-exists? path) path)))
+
+(provide 'extra-tags)
+;;; extra-tags.el ends here