Tortoise SVN is a simple solution for Windows users working with Joomla!'s SVN environment. You can use it to download a current copy of the development repository and to create, apply, and revert patches for testing with the Joomla Bug Squad.
Prerequisites: A local web host environment, such as XAMPP and You administrator privileges on a Windows environment.
If you are using an IDE, you can generally perform these functions in that environment. Instructions for Eclipse are available. If you use Eclipse, Tortoise SVN is not required (although it can still be used along side Eclipse.)
Navigate to the Tortoise SVN Site.
Download and install either the 32 or 64-bit option, depending upon your operating system requirements.
Prerequisite:XAMPP or another local host environment.
Create an empty folder for a new Web site within the Web sites folder (usually named htdocs) of your localhost environment.
Right-click the name of the empty folder and select SVN Checkout from the popup list.
Enter http://joomlacode.org/svn/joomla/development/trunk for URL of repository and press OK.
If prompted, enter anonymous for username and nothing for password. Wait while all files are downloaded from Joomlacode.
Right-click the repository created above. Click SVN-Update.
Download the patch file from an Issue report on Joomlacode. (File tab on bottom of an issue report page.) Right click-the repository folder created above. Select Apply Patch. Locate the patch saved in step 1, click open. Wait for the "File patches" dialog box to appear, right click and select "Patch all."
Right-click the repository where you applied the patch. Click Tortoise-SVN-Revert Select specific files or all files (bottom) to revert the patch changes. Press OK. Wait until the Revert action is complete, then press ok.
Right-click the repository where you made changes to the code. Click Tortoise-SVN-Create Patch. Select specific files or all files (bottom) that apply to the patch changes. Press OK. Save the patch file (usually named Issue #.patch) to your local environment. Upload the file as an attachment to the Issue. (Note: always delete old patch files so that it's clear to testers which file to use.) Document your issue to include clear testing instructions.