1 files changed, 37 insertions, 0 deletions

diff --git a/.emacs.d/snippets/prog-mode/.yas-setup.el b/.emacs.d/snippets/prog-mode/.yas-setup.el
index 03d07cf..22a8168 100644
--- a/.emacs.d/snippets/prog-mode/.yas-setup.el
+++ b/.emacs.d/snippets/prog-mode/.yas-setup.el
@@ -1,2 +1,39 @@
+(require 'yasnippet)
+
 (defun yas-with-comment (str)
   (format "%s%s%s" comment-start str comment-end))
+
+;; whitespace removing functions from Magnar Sveen ;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+(defun yas-s-trim-left (s)
+  "Remove whitespace at the beginning of S."
+  (if (string-match "\\`[ \t\n\r]+" s)
+      (replace-match "" t t s)
+    s))
+
+(defun yas-s-trim-right (s)
+  "Remove whitespace at the end of S."
+  (if (string-match "[ \t\n\r]+\\'" s)
+      (replace-match "" t t s)
+    s))
+
+(defun yas-s-trim (s)
+  "Remove whitespace at the beginning and end of S."
+  (yas-s-trim-left (yas-s-trim-right s)))
+
+
+(defun yas-string-reverse (str)
+  "Reverse a string STR manually to be compatible with emacs versions < 25."
+  (apply #'string
+         (reverse
+          (string-to-list str))))
+
+(defun yas-trimmed-comment-start ()
+  "This function returns `comment-start' trimmed by whitespaces."
+  (yas-s-trim comment-start))
+
+(defun yas-trimmed-comment-end ()
+  "This function returns `comment-end' trimmed by whitespaces if `comment-end' is not empty.
+Otherwise the reversed output of function `yas-trimmed-comment-start' is returned."
+  (if (eq (length comment-end) 0)
+      (yas-string-reverse (yas-trimmed-comment-start))
+    (yas-s-trim comment-end)))