This provides simple syntax highlighting and indentation for Xi in Emacs.

Clone this repository to a location of your choice. Add it to the laod path, and then require xi-mode. For Spacemacs, this looks like adding the following lines to dotspacemacs/user-config in your .spacemacs file:

(push "~/.emacs.d/private/xi-mode" load-path)
(require 'xi-mode)

I imagine it looks very similar for pure emacs, but haven't actually tried it myself.

• The indentation code isn't aware of comments which means that a lone bracket in a comment will throw off indentation.
• If and While statements that don't use brackets won't have indented bodies. This is more of an issue that the first so I will probably fix this soon.
• Negative numbers not highlighted