Hello Larsen,
Thanks again for guidelines,just one question more, what command/GUI output you use to make correct patch diff output on Windows?

I used command git diff a/file.txt b/file.txt but it returned error.

Poslano s mog Windows Phonea

> If you could send me those notes, or even update it on wiki, it would be
> great benefit.

Here you go:

== Send in a patch ==
* Thunderbird > Compose new mail
* Options > Enable Word Wrap: disable
* Recipient: development@lists.ipfire.org <development@lists.ipfire.org>
* Subject: [PATCH] <text>
* Body:
First line contains a short description of the patch.

After a blank line, a more precise description follows (if needed; you can
leave that out for smaller patches). Optionally together with a "Fixes bug
<number>" in case the patch fixes a bug

Signed-off-by: Your Name <your@email.adress>
---

* After the "---" and blank line you put the patch as plain text
* Having sent the mail to the list, you can check
http://patchwork.ipfire.org/project/ipfire/list
* In case there is a corresponding bug in the bugtracker, you should add a
note there with the URL to the patch