+ // Don't update requirements if the macro comes from
+ // the symbols file and has not been redefined.
+ MathWordList const & words = mathedWordList();
+ MathWordList::const_iterator it = words.find(name());
+ MacroNameSet macros;
+ buffer().listMacroNames(macros);
+ if (it == words.end() || it->second.inset != "macro"
+ || macros.find(name()) != macros.end()) {
+ d->definition_.validate(features);
+ }