Re: Removing duplicated lines

[Dani Moncayo]

> Something like this ...
>
>     (defun delete-duplicate-lines (beg end)
>       (interactive "r")
>       (let ((lines (split-string (buffer-substring beg end) "\n")))
>         (delete-region beg end)
>         (insert
>          (mapconcat #'identity (delete-dups lines) "\n"))))

Seem to do the job, indeed.  Thanks!

It could be improved by accepting a prefix argument to control an
optional reordering of the region (as side effect):
* If the argument is > 0 --> Region sorted in ascending order.
* If the argument is < 0 --> Region sorted in descending order.
* If the argument is 0 or nil --> Region is left unsorted.

-- 
Dani Moncayo