Hello,
I need to edit some web application JSP pages (Java Server Pages) with Sublime.
I’d like autocomplete for custom tags, they’re written in TLD (Tag Library Descriptor) files, these are XML documents.

Is there anything that does this already?
Otherwise I can try to write a plugin, but I need some advice about where to start, i.e. which plugin should I consider as an example? Is the HTML_completions package in the standard distribution enough? Or should I start studying a plugin like SublimeCodeIntel?

Basically, I need informations on how to provide Sublime with autocomplete elements for its list (showing an extra help like a list entry description would be a plus, and it is not a requirement at this stage). I’m a bit lost here, any advice would be very welcome.