Offline Editor with WordPress Syntax Support (Windows)

Hello everyone,

I’m looking for an offline editor for Windows that recognizes WordPress shortcode syntax and can do tag matching, indentation and error highlighting at a minimum, and preferably auto-complete and collapsing code blocks. This is mainly for editing pages and parts of the theme. If this question has been answered before I apologize in advance, I did do some searches, perhaps not using the right terminology?

I currently use Notepad++ and did some searching for a custom “language” for Notepad++ with little luck, but I’m open to other tools. One of the reasons I’m looking for an offline editor is that once you paste / edit the code within the web admin interface, you lose any indentation you had and it does not point out some errors with mis-matched tags, and I’m looking to store a cache of pages offline.

Some background – I’m currently working on our company website using WordPress 3.4 and a commercial theme (that’s editable). I have plenty of experience with web technologies, but mainly from a HTML5/JS/JQuery/ASP.NET perspective, and I’m still learning about WordPress and PHP. I used PHP several years ago, so it’s not completely foreign to me as a developer – this is my first post, thanks for your help in advance.