- don't export duplicate items

- don't export top-level collection name
- use file name for name of collection when importing

chrome/content/zotero/fileInterface.js

@@ -258,9 +258,21 @@ var Zotero_File_Interface = new function() {
 	
 	function _importTranslatorsAvailable(translation, translators) {
 		if(translators.length) {
+			if(translation.location instanceof Components.interfaces.nsIFile) {
+				var collectionName = translation.location.leafName.substr(0, translation.location.leafName.lastIndexOf("."));
+				var allCollections = Zotero.getCollections();
+				for(var i=0; i<allCollections.length; i++) {
+					if(allCollections[i].name == collectionName) {
+						collectionName += " "+(new Date()).toLocaleString();
+						break;
+					}
+				}
+			} else {
+				var collectionName = Zotero.getString("fileInterface.imported")+" "+(new Date()).toLocaleString();
+			}
+			
 			// create a new collection to take in imported items
-			var date = new Date();
-			_importCollection = Zotero.Collections.add(Zotero.getString("fileInterface.imported")+" "+date.toLocaleString());
+			_importCollection = Zotero.Collections.add(collectionName);
 			
 			// import items
 			translation.setTranslator(translators[0]);

chrome/content/zotero/xpcom/translation/item_local.js

@@ -505,7 +505,9 @@ Zotero.Translate.ItemGetter.prototype = {
 	
 	"setCollection":function(collection, getChildCollections) {
 		// get items in this collection
+		var haveItems = {};
 		this._itemsLeft = collection.getChildItems();
+		for each(var item in this._itemsLeft) haveItems[item.id] = true;
 		if(!this._itemsLeft) {
 			this._itemsLeft = [];
 		}
@@ -514,16 +516,16 @@ Zotero.Translate.ItemGetter.prototype = {
 			// get child collections
 			this._collectionsLeft = Zotero.getCollections(collection.id, true);
 			
-			if(this._collectionsLeft.length) {
-				// only include parent collection if there are actually children
-				this._collectionsLeft.unshift(collection);
-			}
-			
 			// get items in child collections
 			for each(var collection in this._collectionsLeft) {
 				var childItems = collection.getChildItems();
 				if(childItems) {
-					this._itemsLeft = this._itemsLeft.concat(childItems);
+					for each(var item in childItems) {
+						if(!haveItems[item.id]) {
+							haveItems[item.id] = true;
+							this._itemsLeft.push(item);;
+						}
+					}
 				}
 			}
 		}
@@ -679,7 +681,7 @@ Zotero.Translate.ItemGetter.prototype = {
 				var returnItemArray = this._attachmentToArray(returnItem);
 				if(returnItemArray) return returnItemArray;
 			} else {
-				returnItemArray = this._itemToArray(returnItem);
+				var returnItemArray = this._itemToArray(returnItem);
 				
 				// get attachments, although only urls will be passed if exportFileData
 				// is off

chrome/content/zotero/xpcom/translation/translate.js

@@ -1526,8 +1526,6 @@ Zotero.Translate.IO._RDFSandbox.prototype = {
 	 *     (false)
 	 */
 	"addStatement":function(about, relation, value, literal) {
-		this
-		
 		if(literal) {
 			// zap chars that Mozilla will mangle
 			value = value.toString().replace(/[\x00-\x08\x0B\x0C\x0E-\x1F]/g, '');