Add some new functions

* Run function on a region of text
* Mark text as translatable by Jinja
* URL encode/decode text

configuration.org

@@ -121,6 +121,17 @@ Taken from [[http://ergoemacs.org/emacs/emacs_set_backup_into_a_directory.html][
       (make-directory (file-name-directory backup-file-path) (file-name-directory backup-file-path))
       backup-file-path))
 #+END_SRC
+
+*** Run a function on a region
+
+#+BEGIN_SRC emacs-lisp
+(defun func-region (start end func)
+  "Run a function over the region between START and END in current buffer."
+  (save-excursion
+    (let ((text (delete-and-extract-region start end)))
+      (insert (funcall func text)))))
+#+END_SRC
+
 ** Check if we are running under Termux
 
 We need to do things differently, if so.
@@ -758,6 +769,39 @@ Copied from https://ryuslash.org/posts/C-d-to-close-eshell.html
   `(gpolonkai/idm-get-field-for-account ,account 'account-id))
 #+END_SRC
 
+** Jinja related
+
+*** Mark a string as translatable
+
+#+BEGIN_SRC emacs-lisp
+(defun jinja-mark-translatable (begin end)
+  (interactive (if (use-region-p)
+                   (list (region-beginning) (region-end))
+                 (list (point-min) (point-max))))
+  (save-excursion
+    (goto-char end)
+    (insert "{% endtrans %}")
+    (goto-char begin)
+    (insert "{% trans %}")))
+#+END_SRC
+
+*** URL-ify and de-URL-ify region
+
+These functions URL-encode/decode a text.  Might be helpful when embedding/extracting data to/from
+HTML.
+
+#+BEGIN_SRC emacs-lisp
+(defun hex-region (start end)
+  "urlencode the region between START and END in current buffer."
+  (interactive "r")
+  (func-region start end #'url-hexify-string))
+
+(defun unhex-region (start end)
+  "de-urlencode the region between START and END in current buffer."
+  (interactive "r")
+  (func-region start end #'url-unhex-string))
+#+END_SRC
+
 ** Automatically zone out after 60 seconds
 
 #+BEGIN_SRC emacs-lisp