more work on ig ls...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>

Viewer/features/cli.js

@@ -326,17 +326,36 @@ var CLIActions = actions.Actions({
 				doc: 'List nested/recursive indexes',
 				type: 'bool',
 			},
+
+			'-n': '-nested-only',
+			'-nested-only': {
+				doc: 'Ignore the top-level index and only list the indexes below',
+				type: 'bool',
+			},
+
 		})},
 		function(path, options={}){
+			var that = this
+			this.setupFeatures()
 			file.listIndexes(path)
 				.on('end', function(paths){
-					paths = 
-						(options.recursive ? 
-							paths
-							: file.skipNested(paths))
-						.sortAs(paths)
+					paths = paths
+						.map(function(p){
+							return p
+								.split(that.config['index-dir'])
+								.shift() })
+					// normalize path...
+					path.at(-1) != '/'
+						&& (path += '/')
+					// handle --nested-only
+					options['nested-only']
+						&& paths.splice(paths.indexOf(path), 1)
+					paths = options.recursive ? 
+						paths
+						: file.skipNested(paths)
+							.sortAs(paths)
 					for(var p of paths){
-						console.log(p.replace(/.ImageGrid$/, '')) } }) }],
+						console.log(p) } }) }],
 
 	/* XXX
 	startWorker: ['- System/Start as worker',

Viewer/imagegrid/file.js

@@ -43,30 +43,26 @@ var INDEX_DIR = '.ImageGrid'
 var skipNested = 
 module.skipNested =
 function(paths, index_dir, logger){
+	index_dir = index_dir || INDEX_DIR
 	logger = logger && logger.push('Skipping nested')
 
 	paths = paths
-		.map(function(p){ return p.split(index_dir).shift() })
-		.sort(function(a, b){ return a.length - b.length })
+		.map(function(p){ 
+			return p.split(index_dir).shift() })
+		.sort(function(a, b){ 
+			return a.length - b.length })
 	for(var i=0; i < paths.length; i++){
 		var p = paths[i]
-
-		if(p == null){
-			continue
-		}
-
+		if(p instanceof Array){
+			continue }
 		for(var j=i+1; j < paths.length; j++){
+			if(paths[j] instanceof Array){
+				continue }
 			var o = paths[j].split(p)
-
 			if(o[0] == '' && o.length > 1){
 				logger && logger.emit('skipping', paths[j])
-				delete paths[j]
-			}
-		}
-	}
-	return paths
-		.filter(function(p){ return !!p })
-}
+				paths[j] = [] } } }
+	return paths.flat() }
 
 
 // Guarantee that the 'end' and 'match' handlers will always get called