rename file func and separate util.el

moved whitespace cleanup here

2 files changed, 29 insertions, 8 deletions

diff --git a/conf/em.el b/conf/em.el
index b919d85..6b5f12e 100644
--- a/conf/em.el
+++ b/conf/em.el
@@ -96,11 +96,3 @@
 ;; tramp
 (require 'tramp)
 (setq tramp-default-method "ssh")
-
-;; whitespace cleanup
-(defun cleanup-buffer ()
-  (interactive)
-  (untabify (point-min) (point-max))
-  (delete-trailing-whitespace)
-  (set-buffer-file-coding-system 'utf-8))
-(add-hook 'before-save-hook 'cleanup-buffer)
diff --git a/conf/util.el b/conf/util.el
new file mode 100644
index 0000000..bf9519d
--- /dev/null
+++ b/conf/util.el
@@ -0,0 +1,29 @@
+;; util.el -- utility functions
+
+;; http://whattheemacsd.com/
+;; whitespace cleanup
+(defun cleanup-buffer ()
+  (interactive)
+  (untabify (point-min) (point-max))
+  (delete-trailing-whitespace)
+  (set-buffer-file-coding-system 'utf-8))
+(add-hook 'before-save-hook 'cleanup-buffer)
+
+(defun rename-current-buffer-file ()
+  "Renames current buffer and file it is visiting."
+  (interactive)
+  (let ((name (buffer-name))
+        (filename (buffer-file-name)))
+    (if (not (and filename (file-exists-p filename)))
+        (error "Buffer '%s' is not visiting a file!" name)
+      (let ((new-name (read-file-name "New name: " filename)))
+        (if (get-buffer new-name)
+            (error "A buffer named '%s' already exists!" new-name)
+          (rename-file filename new-name 1)
+          (rename-buffer new-name)
+          (set-visited-file-name new-name)
+          (set-buffer-modified-p nil)
+          (message "File '%s' successfully renamed to '%s'"
+                   name (file-name-nondirectory new-name)))))))
+
+(global-set-key (kbd "C-x C-r") 'rename-current-buffer-file)