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[Sc-devel] PathName:parent

Hello all, a bit of time ago, Dan and I had a short exchange of emails
at the user's list; We both saw handy the inclusion of a parent method
for PathName; From that conversation, Dan suggested something like

+ PathName {
	// Dan
	parentPath {
		var ci = this.colonIndices;
		^if((fullPath.last == $/) && (ci.size > 1), {
			fullPath.copyRange(0, ci[ci.size - 2]);
		}, {
			fullPath.copyRange(0, this.lastColonIndex)

could we add this or something that supplies the same functionality to
the object class?