debd066edd
The attached patch makes remove_child() available as removeChild(pos, keep). That's consistent with getChild. Only renamed remove_child to removeChild and added a check for validity of the pos argument. removeChildren() will be used in input.cxx, and a lot in the upcoming dynamic new_gui dialogs, which are aiming at replacing the hard-coded dialogs. I'll discuss them on the list once the infrastructure is in place. (The <hide> gui property was one part of it.)
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