Add some experimental brush commands.

/br set <shape> <radius> <pattern>
/br deform <shape> <expression>
/br scatter <shape> <density> <generator>
/br apply <shape> <generator>

<shape> can be: cuboid, cyl[inder], sphere

<density> is 0-100

<generator> can be:
forest|tree <type>
item <item>[:<data>] (ONLY WORKS ON FORGE)

Examples:

/br deform cuboid 5 y-=0.2
/br scatter sphere 5 100 minecraft:dye:15

worldedit-core/src/main/java/com/sk89q/worldedit/extension/factory/DefaultItemParser.java

@@ -0,0 +1,80 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.extension.factory;
+
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.blocks.BaseItem;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.extension.input.ParserContext;
+import com.sk89q.worldedit.internal.registry.InputParser;
+
+public class DefaultItemParser extends InputParser<BaseItem> {
+
+    protected DefaultItemParser(WorldEdit worldEdit) {
+        super(worldEdit);
+    }
+
+    @Override
+    public BaseItem parseFromInput(String input, ParserContext context) throws InputParseException {
+        String[] tokens = input.split(":", 3);
+        BaseItem item;
+        short meta = 0;
+
+        try {
+            int id = Integer.parseInt(tokens[0]);
+
+            // Parse metadata
+            if (tokens.length == 2) {
+                try {
+                    meta = Short.parseShort(tokens[1]);
+                } catch (NumberFormatException ignored) {
+                    throw new InputParseException("Expected '" + tokens[1] + "' to be a metadata value but it's not a number");
+                }
+            }
+
+            item = context.requireWorld().getWorldData().getItemRegistry().createFromId(id);
+        } catch (NumberFormatException e) {
+            if (input.length() < 2) {
+                throw new InputParseException("'" + input + "' isn't a known item name format");
+            }
+
+            String name = tokens[0] + ":" + tokens[1];
+
+            // Parse metadata
+            if (tokens.length == 3) {
+                try {
+                    meta = Short.parseShort(tokens[2]);
+                } catch (NumberFormatException ignored) {
+                    throw new InputParseException("Expected '" + tokens[2] + "' to be a metadata value but it's not a number");
+                }
+            }
+
+            item = context.requireWorld().getWorldData().getItemRegistry().createFromId(name);
+        }
+
+        if (item == null) {
+            throw new InputParseException("'" + input + "' did not match any item");
+        } else {
+            item.setData(meta);
+            return item;
+        }
+    }
+
+}