I’ve made a new syntax highlighter for ZBrush’s ZScript scripting language in Sublime Text, which you can grab from Package Control. You can also just install it from within Sublime Text through the Command Palette as well.
It supports syntax highlighting and auto-completion of all commands as per the ZBrush documentation.
Hopefully this helps out any fellow artists/sculptors who might be looking to get into a little bit of ZBrush automation!
(And if you’re a fellow developer who would like direct access to the source, you can always visit the source BitBucket repo.)