[emacs] Add a few functions

1 files changed, 31 insertions, 0 deletions

diff --git a/emacs.d/core/core-defun.el b/emacs.d/core/core-defun.el
index deb315b..a2fb02f 100644
--- a/emacs.d/core/core-defun.el
+++ b/emacs.d/core/core-defun.el
@@ -6,4 +6,35 @@
     (ansi-term "/bin/bash"))
   (get-buffer-process "*ansi-term*"))
 
+(defun switch-to-scratch ()
+  "Switch to scratch, grab the region if it's active."
+  (interactive)
+  (let ((contents
+         (and (region-active-p)
+              (buffer-substring (region-beginning)
+                                (region-end)))))
+    (switch-to-buffer "*scratch*")
+    (if contents
+        (progn
+          (goto-char (buffer-end 1))
+          (insert contents)))))
+
+(defun rename-this-buffer-and-file ()
+  "Renames current buffer and file it is visiting."
+  (interactive)
+  (let ((name (buffer-name))
+        (filename (buffer-file-name))
+        (read-file-name-function 'read-file-name-default))
+    (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)))
+        (cond ((get-buffer new-name)
+               (error "A buffer named '%s' already exists!" new-name))
+              (t
+               (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))))))))
+
 (provide 'core-defun)