I am working on a patch for 1.4pre to allow renaming of macro templates and modifying the number of arguments. It all works, except the case that a macro template has already been instantiated within the text. Specifically, I would like to grow the argument list as required. The most straight forward place to do this is in metrics(), however this is obviously dodgy because a) it's a const function b) although the metrics will change, it's probably not the intended function of this function
Anyway, changing cells_ in MathNestInset to mutable get's around a), but it's dodgy. My other option is to create a non-const update() function for MathArray's & call that prior to calling metrics() in text.C. Given that this is a one off issue, it seems a bit wastefull to cycle through everything twice. So, my question is, where is an appropriate place to resize the argument list of a MathMacro object when it's associated MathMacroTemplate has been modified - specifically the number of arguments? cheers, andrew
