As far as I can tell from reading some old posts and requests, Geany does not support Scintillua.
I am neither a C nor C++ programmer (although I am making some feeble efforts at trying to write a lexer for Scintilla / Geany for a variation on the TWiki markup language).
So, from an ignorant point of view, because Scintillua is a variant of Scintilla, I would think (or hope ;-) that it should be fairly easy to use Scintillua in place of Scintilla in Geany.
Has anyone dug into this at all?
I ask because it looks like it would be a whole lot easier to write my lexer in Scintillua than in C/C++ (and don't even think about me trying to integrate Scintillua into Geany unless it would be some very simple matter of changing sort of a dependency or something (like saying "include Scintillua" instead of saying "include Scintilla" if that is how Scintilla gets "attached" to Geany)).