The method Menu::expand in Menubackend.C has the following signature:
/// Expands some special entries of the menu
/** The entries with the following kind are exanded to a
sequence of Command MenuItems: Lastfiles, Documents,
ViewFormats, ExportFormats, UpdateFormats
*/
void expand(Menu & tomenu, Buffer *) const;
It would have been more reasonable to have something like
Menu const expand(Buffer *) const;
The reason I did not do it is that I was not sure what would happen:
if you create a temporary object in a function, and return it at the
end, is the object copied or do you return it without copy? This can
have some importance if the object is a big vector (think 'table of
contents').
So what is the right way to return this kind of big objects?
JMarc
