Various minor

JavaScript-API
Allow command replacing
Tweak primary thread checks
Tab completion
Schematic resolving
help tweaks
optimize change set
fix color brush

bukkit/build.gradle

@@ -53,7 +53,6 @@ apply plugin: 'com.github.johnrengelman.shadow'
 shadowJar {
     dependencies {
         include(dependency('com.github.luben:zstd-jni:1.1.1'))
-//        include(dependency('org.javassist:javassist:3.22.0-CR1'))
         include(dependency('co.aikar:fastutil-lite:1.0'))
         include(dependency(':core'))
     }

bukkit/src/main/java/com/boydti/fawe/bukkit/FaweBukkit.java

@@ -627,6 +627,11 @@ public class FaweBukkit implements IFawe, Listener {
         return ((BlocksHubBukkit) blocksHubPlugin).getApi();
     }
 
+    @Override
+    public boolean isMainThread() {
+        return Bukkit.isPrimaryThread();
+    }
+
     private Version version = null;
 
     public Version getVersion() {

bukkit/src/main/java/com/boydti/fawe/bukkit/wrapper/AsyncChunk.java

@@ -68,7 +68,7 @@ public class AsyncChunk implements Chunk {
 
     @Override
     public ChunkSnapshot getChunkSnapshot(boolean includeMaxblocky, boolean includeBiome, boolean includeBiomeTempRain) {
-        if (Thread.currentThread() == Fawe.get().getMainThread()) {
+        if (Fawe.isMainThread()) {
             return world.getChunkAt(x, z).getChunkSnapshot(includeMaxblocky, includeBiome, includeBiomeTempRain);
         }
         return whenLoaded(new RunnableVal<ChunkSnapshot>() {
@@ -80,7 +80,7 @@ public class AsyncChunk implements Chunk {
     }
 
     private <T> T whenLoaded(RunnableVal<T> task) {
-        if (Thread.currentThread() == Fawe.get().getMainThread()) {
+        if (Fawe.isMainThread()) {
             task.run();
             return task.value;
         }

core/src/main/java/com/boydti/fawe/Fawe.java

@@ -201,6 +201,11 @@ public class Fawe {
      * @param s
      */
     public static void debug(Object s) {
+        Actor actor = Request.request().getActor();
+        if (actor != null && actor.isPlayer()) {
+            actor.print(BBC.color(BBC.PREFIX.original() + " " + s));
+            return;
+        }
         debugPlain(BBC.PREFIX.original() + " " + s);
     }
 
@@ -729,7 +734,7 @@ public class Fawe {
     }
 
     public static boolean isMainThread() {
-        return INSTANCE != null ? INSTANCE.thread == Thread.currentThread() : true;
+        return INSTANCE != null ? imp().isMainThread() : true;
     }
 
     /**

core/src/main/java/com/boydti/fawe/IFawe.java

@@ -65,4 +65,8 @@ public interface IFawe {
     public default FormBuilder getFormBuilder() {
         return null;
     }
+
+    default boolean isMainThread() {
+        return Fawe.get().getMainThread() == Thread.currentThread();
+    }
 }

core/src/main/java/com/boydti/fawe/command/FaweParser.java

@@ -6,11 +6,8 @@ import com.sk89q.worldedit.extension.input.InputParseException;
 import com.sk89q.worldedit.extension.input.ParserContext;
 import com.sk89q.worldedit.internal.registry.InputParser;
 import com.sk89q.worldedit.util.command.Dispatcher;
-import java.util.AbstractMap;
+
-import java.util.ArrayList;
+import java.util.*;
-import java.util.Arrays;
-import java.util.List;
-import java.util.Map;
 
 public abstract class FaweParser<T> extends InputParser<T> {
     protected FaweParser(WorldEdit worldEdit) {
@@ -28,27 +25,13 @@ public abstract class FaweParser<T> extends InputParser<T> {
 
     public abstract Dispatcher getDispatcher();
 
-    public List<String> suggestRemaining(String input, String... expected) throws InputParseException {
-        List<String> remainder = StringMan.split(input, ':');
-        int len = remainder.size();
-        if (len != expected.length - 1) {
-            if (len <= expected.length - 1 && len != 0) {
-                if (remainder.get(len - 1).endsWith(":")) {
-                    throw new SuggestInputParseException(null, StringMan.join(expected, ":"));
-                }
-                throw new SuggestInputParseException(null, expected[0] + ":" + input + ":" + StringMan.join(Arrays.copyOfRange(expected, len + 1, 3), ":"));
-            } else {
-                throw new SuggestInputParseException(null, StringMan.join(expected, ":"));
-            }
-        }
-        return remainder;
-    }
-
     protected static class ParseEntry {
         public boolean and;
         public String input;
+        public String full;
 
-        public ParseEntry(String input, boolean type) {
+        public ParseEntry(String full, String input, boolean type) {
+            this.full = full;
             this.input = input;
             this.and = type;
         }
@@ -59,67 +42,55 @@ public abstract class FaweParser<T> extends InputParser<T> {
         }
     }
 
-    public List<Map.Entry<ParseEntry, List<String>>> parse(String command) throws InputParseException {
+    public static List<Map.Entry<ParseEntry, List<String>>> parse(String toParse) throws InputParseException {
         List<Map.Entry<ParseEntry, List<String>>> keys = new ArrayList<>();
-        List<String> args = new ArrayList<>();
+        List<String> inputs = new ArrayList<>();
-        int len = command.length();
+        List<Boolean> and = new ArrayList<>();
-        String current = null;
+        int last = 0;
-        int end = -1;
+        outer:
-        boolean newEntry = true;
+        for (int i = 0; i < toParse.length(); i++) {
-        for (int i = 0; i < len; i++) {
+            char c = toParse.charAt(i);
-            int prefix = 0;
-            boolean or = false;
-            char c = command.charAt(i);
-            if (i < end) continue;
             switch (c) {
+                case ',':
                 case '&':
-                    or = true;
+                    String result = toParse.substring(last, i);
-                case ',': {
+                    if (!result.isEmpty()) {
-                    prefix = 1;
+                        inputs.add(result);
-                    if (current == null) {
+                        and.add(c == '&');
-                        throw new InputParseException("Duplicate separator");
+                    } else {
+                        throw new InputParseException("Invalid dangling character " + c);
                     }
-                    newEntry = true;
+                    last = i + 1;
-                    break;
+                    continue outer;
+                default:
+                    if (StringMan.getMatchingBracket(c) != c) {
+                        int next = StringMan.findMatchingBracket(toParse, i);
+                        if (next != -1) {
+                            i = next;
+                        } else {
+                            toParse += "]";
+                            i = toParse.length();
                         }
-                case '[': {
+                        continue outer;
-                    int depth = 0;
-                    end = len;
-                    loop:
-                    for (int j = i + 1; j < len; j++) {
-                        char c2 = command.charAt(j);
-                        switch (c2) {
-                            case '[':
-                                depth++;
-                                continue;
-                            case ']':
-                                if (depth-- <= 0) {
-                                    end = j;
-                                    break loop;
                     }
             }
         }
-                    String arg = command.substring(i + 1, end);
+        inputs.add(toParse.substring(last, toParse.length()));
+        for (int i = 0; i < inputs.size(); i++) {
+            String full = inputs.get(i);
+            String command = full;
+            List<String> args = new ArrayList<>();
+            while (!command.isEmpty() && command.charAt(command.length() - 1) == ']') {
+                int startPos = StringMan.findMatchingBracket(command, command.length() - 1);
+                if (startPos == -1) break;
+                String arg = command.substring(startPos + 1, command.length() - 1);
                 args.add(arg);
-                    break;
+                command = full.substring(0, startPos);
             }
-            }
+            Collections.reverse(args);
-            if (newEntry) {
+            ParseEntry entry = new ParseEntry(full, command, i > 0 ? and.get(i - 1) : false);
-                newEntry = false;
-                int index = StringMan.indexOf(command, Math.max(i, end) + prefix, '[', '&', ',');
-                if (index < 0) index = len;
-                end = index;
-                current = command.substring(i + prefix, end);
-                if (prefix == 1) args = new ArrayList<>();
-                ParseEntry entry = new ParseEntry(current, or);
             keys.add(new AbstractMap.SimpleEntry<>(entry, args));
         }
-        }
-        for (int i = 0; i < keys.size() - 1; i++) { // Apply greedy and
-            if (keys.get(i + 1).getKey().and) {
-                keys.get(i).getKey().and = true;
-            }
-        }
         return keys;
     }
 }

core/src/main/java/com/boydti/fawe/command/SuggestInputParseException.java

@@ -2,87 +2,87 @@ package com.boydti.fawe.command;
 
 import com.boydti.fawe.util.MainUtil;
 import com.boydti.fawe.util.StringMan;
+import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.extension.input.InputParseException;
+
+import java.lang.reflect.InvocationTargetException;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collection;
 import java.util.List;
+import java.util.function.Supplier;
+
+import static com.google.common.base.Preconditions.checkNotNull;
 
 public class SuggestInputParseException extends InputParseException {
 
-    private final String message;
+    private final InputParseException cause;
+    private final SuggestSupplier<List<String>> getSuggestions;
     private String prefix;
-    private ArrayList<String> suggestions = new ArrayList<>();
 
-    public SuggestInputParseException(String input, Collection<String> inputs) {
+    public SuggestInputParseException(String msg, String prefix, SuggestSupplier<List<String>> getSuggestions) {
-        super("");
+        this(new InputParseException(msg), prefix, getSuggestions);
-        this.message = "Suggested input: " + StringMan.join(suggestions = getSuggestions(input, inputs), ", ");
-        this.prefix = "";
     }
 
-    public SuggestInputParseException(String input, String... inputs) {
+    public static SuggestInputParseException of(Throwable other, String prefix, SuggestSupplier<List<String>> getSuggestions) {
-        super("");
+        InputParseException e = find(other);
-        this.message = "Suggested input: " + StringMan.join(suggestions = getSuggestions(input, inputs), ", ");
+        if (e != null) return of(e, prefix, getSuggestions);
-        this.prefix = "";
+        return of(new InputParseException(other.getMessage()), prefix, getSuggestions);
+    }
+
+    public static SuggestInputParseException of(InputParseException other, String prefix, SuggestSupplier<List<String>> getSuggestions) {
+        if (other instanceof SuggestInputParseException) return (SuggestInputParseException) other;
+        return new SuggestInputParseException(other, prefix, getSuggestions);
+    }
+
+    public SuggestInputParseException(InputParseException other, String prefix, SuggestSupplier<List<String>> getSuggestions) {
+        super(other.getMessage());
+        checkNotNull(getSuggestions);
+        checkNotNull(other);
+        this.cause = other;
+        this.getSuggestions = getSuggestions;
+        this.prefix = prefix;
+    }
+
+    public interface SuggestSupplier<T> {
+        T get() throws InputParseException;
+    }
+
+    public static InputParseException find(Throwable e) {
+        do {
+            if (e instanceof InputParseException) return (InputParseException) e;
+            e = e.getCause();
+        }
+        while (e != null);
+        return null;
+    }
+
+    public static SuggestInputParseException get(Throwable e) {
+        Throwable t = e;
+        while (t.getCause() != null) {
+            t = t.getCause();
+            if (t instanceof SuggestInputParseException) return (SuggestInputParseException) t;
+        }
+        return null;
+    }
+
+    @Override
+    public synchronized Throwable getCause() {
+        return cause.getCause();
     }
 
     @Override
     public String getMessage() {
-        return message;
+        return cause.getMessage();
     }
 
-    public List<String> getSuggestions() {
+
-        return MainUtil.prepend(prefix, suggestions);
+    public List<String> getSuggestions() throws InputParseException {
+        return getSuggestions.get();
     }
 
     public SuggestInputParseException prepend(String input) {
         this.prefix = input + prefix;
         return this;
     }
-
-    public static SuggestInputParseException get(Throwable e) {
-        if (e instanceof SuggestInputParseException) {
-            return (SuggestInputParseException) e;
-        }
-        Throwable cause = e.getCause();
-        if (cause == null) {
-            return null;
-        }
-        return get(cause);
-    }
-
-    private static ArrayList<String> getSuggestions(String input, Collection<String> inputs) {
-        ArrayList<String> suggestions = new ArrayList<>();
-        if (input != null) {
-            String tmp = input.toLowerCase();
-            for (String s : inputs) {
-                if (s.startsWith(tmp)) {
-                    suggestions.add(s);
-                }
-
-            }
-        }
-        if (suggestions.isEmpty()) {
-            suggestions.addAll(inputs);
-        }
-        return suggestions;
-    }
-
-    private static ArrayList<String> getSuggestions(String input, String... inputs) {
-        ArrayList<String> suggestions = new ArrayList<>();
-        if (input != null) {
-            String tmp = input.toLowerCase();
-            for (String s : inputs) {
-                if (s.startsWith(tmp)) {
-                    suggestions.add(s);
-                }
-
-            }
-        }
-        if (suggestions.isEmpty()) {
-            for (String s : inputs) {
-                suggestions.add(s);
-            }
-        }
-        return suggestions;
-    }
 }

core/src/main/java/com/boydti/fawe/config/Commands.java

@@ -30,6 +30,47 @@ public class Commands {
         }
     }
 
+    public static Command fromArgs(String[] aliases, String usage, String desc, int min, int max, String flags, String help, boolean queued /* ignored */) {
+        return new Command() {
+            @Override
+            public Class<? extends Annotation> annotationType() {
+                return Command.class;
+            }
+            @Override
+            public String[] aliases() {
+                return aliases;
+            }
+            @Override
+            public String usage() {
+                return usage;
+            }
+            @Override
+            public String desc() {
+                return desc;
+            }
+            @Override
+            public int min() {
+                return min;
+            }
+            @Override
+            public int max() {
+                return max;
+            }
+            @Override
+            public String flags() {
+                return flags;
+            }
+            @Override
+            public String help() {
+                return help;
+            }
+            @Override
+            public boolean anyFlags() {
+                return !(flags.isEmpty() || flags.matches("[a-z]+"));
+            }
+        };
+    }
+
     public static Command translate(Class clazz, final Command command) {
         if (cmdConfig == null || command instanceof TranslatedCommand) {
             return command;

core/src/main/java/com/boydti/fawe/config/Settings.java

@@ -76,8 +76,6 @@ public class Settings extends Config {
         @Comment({
                 "Put any minecraft or mod jars for FAWE to be aware of block textures",
         })
-        public String PATTERNS = "patterns";
-        public String MASKS = "masks";
         public String TEXTURES = "textures";
         public String HEIGHTMAP = "heightmap";
         public String HISTORY = "history";
@@ -88,6 +86,7 @@ public class Settings extends Config {
         public String CLIPBOARD = "clipboard";
         @Comment("Each player has their own sub directory for schematics")
         public boolean PER_PLAYER_SCHEMATICS = true;
+        public String COMMANDS = "commands";
     }
 
     @Comment("Region restriction settings")

core/src/main/java/com/boydti/fawe/example/MappedFaweQueue.java

@@ -21,10 +21,9 @@ import com.sk89q.worldedit.blocks.BlockMaterial;
 import com.sk89q.worldedit.world.World;
 import com.sk89q.worldedit.world.biome.BaseBiome;
 import com.sk89q.worldedit.world.registry.BundledBlockData;
-import java.util.ArrayDeque;
+
-import java.util.Collection;
+import java.lang.reflect.InvocationTargetException;
-import java.util.HashSet;
+import java.util.*;
-import java.util.UUID;
 import java.util.concurrent.ConcurrentLinkedDeque;
 import java.util.concurrent.ForkJoinPool;
 import java.util.concurrent.TimeUnit;
@@ -409,7 +408,7 @@ public abstract class MappedFaweQueue<WORLD, CHUNK, CHUNKSECTIONS, SECTION> impl
         if (chunk != null) {
             return chunk;
         }
-        boolean sync = Thread.currentThread() == Fawe.get().getMainThread();
+        boolean sync = Fawe.isMainThread();
         if (sync) {
             return loadChunk(getWorld(), cx, cz, true);
         } else if (getSettings().HISTORY.CHUNK_WAIT_MS > 0) {

core/src/main/java/com/boydti/fawe/object/changeset/FaweChangeSet.java

@@ -265,9 +265,12 @@ public abstract class FaweChangeSet implements ChangeSet {
                             int bz = cz << 4;
                             synchronized (FaweChangeSet.this) {
                                 // Biome changes
-                                if (previous.getBiomeArray() != null) {
+                                {
-                                    byte[] previousBiomes = previous.getBiomeArray();
                                     byte[] nextBiomes = next.getBiomeArray();
+                                    if (nextBiomes != null) {
+                                        byte[] previousBiomes = previous.getBiomeArray();
+                                        if (previousBiomes != null) {
+
                                             int index = 0;
                                             for (int z = 0; z < 16; z++) {
                                                 int zz = bz + z;
@@ -280,15 +283,16 @@ public abstract class FaweChangeSet implements ChangeSet {
                                                     index++;
                                                 }
                                             }
-                                    // TODO
+                                        }
+                                    }
                                 }
                                 // Block changes
                                 for (int layer = 0; layer < layers; layer++) {
                                     char[] currentLayer = next.getIdArray(layer);
-                                    char[] previousLayer = previous.getIdArray(layer);
                                     if (currentLayer == null) {
                                         continue;
                                     }
+                                    char[] previousLayer = previous.getIdArray(layer);
                                     int startY = layer << 4;
                                     int index = 0;
                                     for (int y = 0; y < 16; y++) {

core/src/main/java/com/boydti/fawe/object/collection/SummedColorTable.java

@@ -24,7 +24,7 @@ public class SummedColorTable {
         this.hasAlpha = new int[raw.length];
         this.alpha = calculateAlpha ? new long[raw.length] : null;
         this.alphaInverse = calculateAlpha ? new float[256] : null;
-        this.areaInverses = new float[Character.MAX_VALUE];
+        this.areaInverses = new float[1024 * 1024];
         for (int i = 0; i < areaInverses.length; i++) {
             areaInverses[i] = 1f / (i + 1);
         }

core/src/main/java/com/boydti/fawe/object/extent/NullExtent.java

@@ -14,6 +14,8 @@ import com.sk89q.worldedit.function.operation.Operation;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.world.biome.BaseBiome;
+
+import javax.annotation.Nullable;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
@@ -123,6 +125,12 @@ public class NullExtent extends FaweRegionExtent {
         return null;
     }
 
+    @Nullable
+    @Override
+    public Operation commit() {
+        return null;
+    }
+
     @Override
     public int getNearestSurfaceLayer(int x, int z, int y, int minY, int maxY) {
         throw new FaweException(reason);

core/src/main/java/com/boydti/fawe/object/extent/StripNBTExtent.java

@@ -28,8 +28,7 @@ public class StripNBTExtent extends AbstractDelegateExtent {
      */
     public StripNBTExtent(Extent extent, Set<String> strip) {
         super(extent);
-        this.
+        this.strip = strip.toArray(new String[strip.size()]);
-                strip = strip.toArray(new String[strip.size()]);
     }
 
     @Override

core/src/main/java/com/boydti/fawe/object/pattern/AngleColorPattern.java

@@ -48,7 +48,7 @@ public class AngleColorPattern extends DataAnglePattern {
             int height = extent.getNearestSurfaceTerrainBlock(x, z, y, 0, maxY);
             if (height > 0) {
                 BaseBlock below = extent.getLazyBlock(x, height - 1, z);
-                if (FaweCache.canPassThrough(block.getId(), block.getData())) {
+                if (FaweCache.canPassThrough(below.getId(), below.getData())) {
                     return Integer.MAX_VALUE;
                 }
             }

core/src/main/java/com/boydti/fawe/object/schematic/StructureFormat.java

@@ -139,7 +139,7 @@ public class StructureFormat implements ClipboardReader, ClipboardWriter {
                 Map<String, Tag> entityEntryMap = entityEntry.getValue();
                 ListTag posTag = (ListTag) entityEntryMap.get("pos");
                 CompoundTag nbtTag = (CompoundTag) entityEntryMap.get("nbt");
-                String id = ((StringTag) entityEntryMap.get("Id")).getValue();
+                String id = nbtTag.getString("Id");
                 Location location = NBTConversions.toLocation(clipboard, posTag, nbtTag.getListTag("Rotation"));
                 if (!id.isEmpty()) {
                     BaseEntity state = new BaseEntity(id, nbtTag);

core/src/main/java/com/boydti/fawe/util/MainUtil.java

@@ -585,7 +585,7 @@ public class MainUtil {
             long ratio = total / compressedSize;
             long saved = total - compressedSize;
 
-            if (ratio > 3 && Thread.currentThread() != Fawe.get().getMainThread() && actor != null) {
+            if (ratio > 3 && !Fawe.isMainThread() && actor != null) {
                 BBC.COMPRESSED.send(actor, saved, ratio);
             }
         } catch (Exception e) {

core/src/main/java/com/boydti/fawe/util/StringMan.java

@@ -10,6 +10,8 @@ import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
 import java.util.function.Function;
+import java.util.function.IntConsumer;
+import java.util.function.IntFunction;
 
 public class StringMan {
     public static String replaceFromMap(final String string, final Map<String, String> replacements) {
@@ -33,6 +35,85 @@ public class StringMan {
         return sb.toString();
     }
 
+    public static boolean containsAny(CharSequence sequence, String any) {
+        for (int i = 0; i < sequence.length(); i++) {
+            if (any.indexOf(sequence.charAt(i)) != -1) return true;
+        }
+        return false;
+    }
+
+    public static int findMatchingBracket(CharSequence sequence, int index) {
+        char startC = sequence.charAt(index);
+        char lookC = getMatchingBracket(startC);
+        if (lookC == startC) return -1;
+        boolean forward = isBracketForwards(startC);
+        int increment = forward ? 1 : -1;
+        int end = forward ? sequence.length() : -1;
+        int count = 0;
+        for (int i = index + increment; i != end; i += increment) {
+            char c = sequence.charAt(i);
+            if (c == startC) {
+                count++;
+            } else if (c == lookC && count-- == 0) {
+                return i;
+            }
+        }
+        return -1;
+    }
+
+    public static String prettyFormat(double d) {
+        if (d == Double.MIN_VALUE) return "-∞";
+        if (d == Double.MAX_VALUE) return "∞";
+        if(d == (long) d) return String.format("%d",(long)d);
+        else return String.format("%s",d);
+    }
+
+    public static boolean isBracketForwards(char c) {
+        switch (c) {
+            case '[':
+            case '(':
+            case '{':
+            case '<':
+                return true;
+            default: return false;
+        }
+    }
+
+    public static char getMatchingBracket(char c) {
+        switch (c) {
+            case '[': return ']';
+            case '(': return ')';
+            case '{': return '}';
+            case '<': return '>';
+            case ']': return '[';
+            case ')': return '(';
+            case '}': return '{';
+            case '>': return '<';
+            default: return c;
+        }
+    }
+
+    public static int parseInt(CharSequence string) {
+        int val = 0;
+        boolean neg = false;
+        int numIndex = 1;
+        int len = string.length();
+        outer:
+        for (int i = len - 1; i >= 0; i--) {
+            char c = string.charAt(i);
+            switch (c) {
+                case '-':
+                    val = -val;
+                    break;
+                default:
+                    val = val + (c - 48) * numIndex;
+                    numIndex *= 10;
+                    break;
+            }
+        }
+        return val;
+    }
+
     public static String removeFromSet(final String string, final Collection<String> replacements) {
         final StringBuilder sb = new StringBuilder(string);
         int size = string.length();
@@ -189,7 +270,7 @@ public class StringMan {
         return true;
     }
 
-    public static boolean isAlphanumericUnd(final String str) {
+    public static boolean isAlphanumericUnd(final CharSequence str) {
         for (int i = 0; i < str.length(); i++) {
             final char c = str.charAt(i);
             if ((c < 0x30) || ((c >= 0x3a) && (c <= 0x40)) || ((c > 0x5a) && (c <= 0x60)) || (c > 0x7a) || (c == '_')) {

core/src/main/java/com/boydti/fawe/util/TaskManager.java

@@ -188,7 +188,7 @@ public abstract class TaskManager {
         if (r == null) {
             return;
         }
-        if (Thread.currentThread() == Fawe.get().getMainThread()) {
+        if (Fawe.isMainThread()) {
             r.run();
         } else {
             task(r);
@@ -336,7 +336,7 @@ public abstract class TaskManager {
      * @return
      */
     public <T> T syncWhenFree(final RunnableVal<T> function, int timeout) {
-        if (Fawe.get().getMainThread() == Thread.currentThread()) {
+        if (Fawe.isMainThread()) {
             function.run();
             return function.value;
         }
@@ -389,7 +389,7 @@ public abstract class TaskManager {
     }
 
     public <T> T sync(final Supplier<T> function, int timeout) {
-        if (Fawe.get().getMainThread() == Thread.currentThread()) {
+        if (Fawe.isMainThread()) {
             return function.get();
         }
         final AtomicBoolean running = new AtomicBoolean(true);

core/src/main/java/com/boydti/fawe/util/image/ImageUtil.java

@@ -3,6 +3,7 @@ package com.boydti.fawe.util.image;
 import com.boydti.fawe.Fawe;
 import com.boydti.fawe.util.MainUtil;
 import com.boydti.fawe.util.MathMan;
+import com.boydti.fawe.util.StringMan;
 import com.sk89q.worldedit.util.command.parametric.ParameterException;
 import java.awt.Graphics2D;
 import java.awt.RenderingHints;
@@ -16,6 +17,13 @@ import java.io.InputStream;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.net.URL;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
 
 public class ImageUtil {
     public static BufferedImage getScaledInstance(BufferedImage img,
@@ -208,7 +216,6 @@ public class ImageUtil {
         }
     }
 
-
     public static URI getImageURI(String arg) throws ParameterException {
         try {
             if (arg.startsWith("http")) {

core/src/main/java/com/sk89q/worldedit/EditSession.java

@@ -363,19 +363,6 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
         this(world, null, null, null, null, null, true, null, null, null, blockBag, eventBus, event);
     }
 
-    /**
-     * Lazily copy a region
-     *
-     * @param region
-     * @return
-     */
-    public BlockArrayClipboard lazyCopy(Region region) {
-        WorldCopyClipboard faweClipboard = new WorldCopyClipboard(this, region);
-        BlockArrayClipboard weClipboard = new BlockArrayClipboard(region, faweClipboard);
-        weClipboard.setOrigin(region.getMinimumPoint());
-        return weClipboard;
-    }
-
     /**
      * The limit for this specific edit (blocks etc)
      *
@@ -2865,9 +2852,7 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
                 distribution.add(new Countable<BaseBlock>(FaweCache.CACHE_BLOCK[i], count));
             }
         }
-        Collections.sort(distribution);
         // Collections.reverse(distribution);
-
         return distribution;
     }
 

core/src/main/java/com/sk89q/worldedit/LocalSession.java

@@ -36,6 +36,7 @@ import com.boydti.fawe.object.extent.ResettableExtent;
 import com.boydti.fawe.util.*;
 import com.boydti.fawe.util.cui.CUI;
 import com.boydti.fawe.wrappers.WorldWrapper;
+import com.intellectualcrafters.plot.object.PlotArea;
 import com.sk89q.jchronic.Chronic;
 import com.sk89q.jchronic.Options;
 import com.sk89q.jchronic.utils.Span;
@@ -1170,7 +1171,7 @@ public class LocalSession implements TextureHolder {
 
         if (hasCUISupport) {
             actor.dispatchCUIEvent(event);
-        } else {
+        } else if (actor.isPlayer()) {
             CUI cui = Fawe.get().getCUI(actor);
             if (cui != null) cui.dispatchCUIEvent(event);
         }

core/src/main/java/com/sk89q/worldedit/command/HelpBuilder.java

@@ -8,7 +8,8 @@ import com.sk89q.minecraft.util.commands.CommandContext;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.extension.platform.CommandManager;
 import com.sk89q.worldedit.util.command.*;
-import com.sk89q.worldedit.util.command.parametric.ParametricCallable;
+import com.sk89q.worldedit.util.command.parametric.AParametricCallable;
+
 import java.util.*;
 
 public abstract class HelpBuilder implements Runnable {
@@ -69,13 +70,12 @@ public abstract class HelpBuilder implements Runnable {
                         if (c instanceof DelegateCallable) {
                             c = ((DelegateCallable) c).getParent();
                         }
-                        if (c instanceof ParametricCallable) {
+                        if (c instanceof AParametricCallable) {
-                            Object obj = ((ParametricCallable) c).getObject();
+                            Command command = ((AParametricCallable) c).getCommand();
-                            Command command = obj.getClass().getAnnotation(Command.class);
                             if (command != null && command.aliases().length != 0) {
                                 group = command.aliases()[0];
                             } else {
-                                group = obj.getClass().getSimpleName().replaceAll("Commands", "").replaceAll("Util$", "");
+                                group = ((AParametricCallable) c).getGroup();
                             }
                         } else if (c instanceof Dispatcher) {
                             group = mapping.getPrimaryAlias();

core/src/main/java/com/sk89q/worldedit/command/PatternCommands.java

@@ -1,5 +1,8 @@
 package com.sk89q.worldedit.command;
 
+import com.boydti.fawe.Fawe;
+import com.boydti.fawe.FaweAPI;
+import com.boydti.fawe.config.Settings;
 import com.boydti.fawe.object.DataAnglePattern;
 import com.boydti.fawe.object.FawePlayer;
 import com.boydti.fawe.object.clipboard.MultiClipboardHolder;
@@ -8,11 +11,11 @@ import com.boydti.fawe.object.pattern.*;
 import com.boydti.fawe.object.random.SimplexRandom;
 import com.boydti.fawe.util.ColorUtil;
 import com.boydti.fawe.util.TextureUtil;
+import com.boydti.fawe.wrappers.LocationMaskedPlayerWrapper;
 import com.sk89q.minecraft.util.commands.Command;
-import com.sk89q.worldedit.EmptyClipboardException;
+import com.sk89q.minecraft.util.commands.CommandContext;
-import com.sk89q.worldedit.LocalSession;
+import com.sk89q.worldedit.*;
-import com.sk89q.worldedit.Vector;
+import com.sk89q.worldedit.blocks.BaseBlock;
-import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.extension.input.InputParseException;
 import com.sk89q.worldedit.extension.platform.Actor;
@@ -26,11 +29,13 @@ import com.sk89q.worldedit.function.pattern.RandomPattern;
 import com.sk89q.worldedit.internal.expression.Expression;
 import com.sk89q.worldedit.internal.expression.ExpressionException;
 import com.sk89q.worldedit.regions.shape.WorldEditExpressionEnvironment;
+import com.sk89q.worldedit.scripting.RhinoCraftScriptEngine;
 import com.sk89q.worldedit.session.ClipboardHolder;
 import com.sk89q.worldedit.util.command.binding.Range;
 import com.sk89q.worldedit.util.command.parametric.Optional;
 import com.sk89q.worldedit.world.biome.BaseBiome;
 import java.awt.Color;
+import java.io.File;
 import java.io.IOException;
 import java.util.Collections;
 import java.util.List;

core/src/main/java/com/sk89q/worldedit/command/SchematicCommands.java

@@ -45,6 +45,7 @@ import com.sk89q.worldedit.event.extent.PlayerSaveClipboardEvent;
 import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.extent.clipboard.BlockArrayClipboard;
 import com.sk89q.worldedit.extent.clipboard.Clipboard;
+import com.sk89q.worldedit.extent.clipboard.ClipboardFormats;
 import com.sk89q.worldedit.extent.clipboard.io.ClipboardFormat;
 import com.sk89q.worldedit.extent.clipboard.io.ClipboardWriter;
 import com.sk89q.worldedit.function.operation.Operations;
@@ -54,6 +55,8 @@ import com.sk89q.worldedit.util.command.binding.Switch;
 import com.sk89q.worldedit.util.command.parametric.Optional;
 import com.sk89q.worldedit.util.io.file.FilenameException;
 import com.sk89q.worldedit.world.registry.WorldData;
+
+import javax.annotation.Nullable;
 import java.io.*;
 import java.net.URI;
 import java.net.URISyntaxException;
@@ -69,6 +72,7 @@ import java.util.regex.Pattern;
 
 
 import static com.boydti.fawe.util.ReflectionUtils.as;
+import static com.google.common.base.Preconditions.checkNotNull;
 
 /**
  * Commands that work with schematic files.
@@ -187,16 +191,26 @@ public class SchematicCommands extends MethodCommands {
         player.print(BBC.getPrefix() + "Remapped schematic");
     }
 
+    private File resolve(File dir, String filename, @Nullable ClipboardFormat format) {
+        if (format != null) {
+            if (!filename.matches(".*\\.[\\w].*")) {
+                filename = filename + "." + format.getExtension();
+            }
+            return MainUtil.resolveRelative(new File(dir, filename));
+        }
+        for (ClipboardFormat f : ClipboardFormat.values()) {
+            File file = MainUtil.resolveRelative(new File(dir, filename + "." + f.getExtension()));
+            if (file.exists()) return file;
+        }
+        return null;
+    }
+
     @Command(aliases = {"load"}, usage = "[<format>] <filename>", desc = "Load a schematic into your clipboard")
     @Deprecated
     @CommandPermissions({"worldedit.clipboard.load", "worldedit.schematic.load", "worldedit.schematic.upload", "worldedit.schematic.load.other"})
-    public void load(final Player player, final LocalSession session, @Optional("schematic") final String formatName, String filename) throws FilenameException {
+    public void load(final Player player, final LocalSession session, @Optional() final String formatName, String filename) throws FilenameException {
         final LocalConfiguration config = this.worldEdit.getConfiguration();
-        final ClipboardFormat format = ClipboardFormat.findByAlias(formatName);
+        ClipboardFormat format = formatName == null ? null : ClipboardFormat.findByAlias(formatName);
-        if (format == null) {
-            BBC.CLIPBOARD_INVALID_FORMAT.send(player, formatName);
-            return;
-        }
         InputStream in = null;
         try {
             URI uri;
@@ -220,8 +234,14 @@ public class SchematicCommands extends MethodCommands {
                 File dir = Settings.IMP.PATHS.PER_PLAYER_SCHEMATICS ? new File(working, player.getUniqueId().toString()) : working;
                 File f;
                 if (filename.startsWith("#")) {
-                    f = player.openFileOpenDialog(new String[] { format.getExtension() });
+                    String[] extensions;
-                    if (!f.exists()) {
+                    if (format != null) {
+                        extensions = new String[] { format.getExtension() };
+                    } else {
+                        extensions = ClipboardFormats.getFileExtensionArray();
+                    }
+                    f = player.openFileOpenDialog(extensions);
+                    if (f == null || !f.exists()) {
                         player.printError("Schematic " + filename + " does not exist! (" + f + ")");
                         return;
                     }
@@ -230,32 +250,30 @@ public class SchematicCommands extends MethodCommands {
                         BBC.NO_PERM.send(player, "worldedit.schematic.load.other");
                         return;
                     }
-                    if (!filename.matches(".*\\.[\\w].*")) {
+                    if (format == null && filename.matches(".*\\.[\\w].*")) {
-                        filename += "." + format.getExtension();
+                        String extension = filename.substring(filename.lastIndexOf('.') + 1, filename.length());
+                        format = ClipboardFormat.findByExtension(extension);
                     }
-                    f = MainUtil.resolveRelative(new File(dir, filename));
+                    f = resolve(dir, filename, format);
                 }
-                if (f.getName().replaceAll("." + format.getExtension(), "").isEmpty()) {
+                if (f == null || !f.exists()) {
-                    File directory = f.getParentFile();
-                    if (directory.exists()) {
-                        int max = MainUtil.getMaxFileId(directory) - 1;
-                        f = new File(directory, max + "." + format.getExtension());
-                    } else {
-                        f = new File(directory, "1." + format.getExtension());
-                    }
-                }
-                if (!f.exists()) {
                     if (!filename.contains("../")) {
                         dir = this.worldEdit.getWorkingDirectoryFile(config.saveDir);
-                        f = this.worldEdit.getSafeSaveFile(player, dir, filename, format.getExtension(), format.getExtension());
+                        f = resolve(dir, filename, format);
                     }
                 }
-                if (!f.exists() || !MainUtil.isInSubDirectory(working, f)) {
+                if (f == null || !f.exists() || !MainUtil.isInSubDirectory(working, f)) {
                     player.printError("Schematic " + filename + " does not exist! (" + f.exists() + "|" + f + "|" + (!MainUtil.isInSubDirectory(working, f)) + ")");
                     return;
                 }
+                if (format == null) {
+                    format = ClipboardFormat.findByFile(f);
+                    if (format == null) {
+                        BBC.CLIPBOARD_INVALID_FORMAT.send(player, f.getName());
+                        return;
+                    }
+                }
                 in = new FileInputStream(f);
-
                 uri = f.toURI();
             }
             format.hold(player, uri, in);

core/src/main/java/com/sk89q/worldedit/command/tool/AreaPickaxe.java

@@ -46,8 +46,8 @@ public class AreaPickaxe implements BlockTool {
         editSession.getSurvivalExtent().setToolUse(config.superPickaxeManyDrop);
 
         for (int x = ox - range; x <= ox + range; ++x) {
-            for (int y = oy - range; y <= oy + range; ++y) {
             for (int z = oz - range; z <= oz + range; ++z) {
+                for (int y = oy + range; y >= oy - range; --y) {
                     if (editSession.getLazyBlock(x, y, z).getId() != initialType) {
                         continue;
                     }

core/src/main/java/com/sk89q/worldedit/extension/factory/DefaultMaskParser.java

@@ -1,8 +1,10 @@
 package com.sk89q.worldedit.extension.factory;
 
 import com.boydti.fawe.command.FaweParser;
+import com.boydti.fawe.command.SuggestInputParseException;
 import com.boydti.fawe.config.BBC;
 import com.boydti.fawe.util.StringMan;
+import com.sk89q.minecraft.util.commands.CommandException;
 import com.sk89q.minecraft.util.commands.CommandLocals;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.blocks.BaseBlock;
@@ -22,11 +24,13 @@ import com.sk89q.worldedit.session.request.Request;
 import com.sk89q.worldedit.util.command.Dispatcher;
 import com.sk89q.worldedit.util.command.SimpleDispatcher;
 import com.sk89q.worldedit.util.command.parametric.ParametricBuilder;
+
 import java.util.ArrayList;
-import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.regex.Pattern;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
 public class DefaultMaskParser extends FaweParser<Mask> {
     private final Dispatcher dispatcher;
@@ -52,23 +56,27 @@ public class DefaultMaskParser extends FaweParser<Mask> {
 
     @Override
     public Mask parseFromInput(String input, ParserContext context) throws InputParseException {
-        if (input.isEmpty()) return null;
+        if (input.isEmpty()) {
+            throw new SuggestInputParseException("No input provided", "", () -> Stream.of("#", ",", "&").map(n -> n + ":").collect(Collectors.toList())
+                // TODO namespaces
+            );
+        }
         Extent extent = Request.request().getExtent();
         if (extent == null) extent = context.getExtent();
-        HashSet<BaseBlock> blocks = new HashSet<BaseBlock>();
+        List<List<Mask>> masks = new ArrayList<>();
-        List<Mask> intersection = new ArrayList<>();
+        masks.add(new ArrayList<>());
-        List<Mask> union = new ArrayList<>();
+
         final CommandLocals locals = new CommandLocals();
         Actor actor = context != null ? context.getActor() : null;
         if (actor != null) {
             locals.put(Actor.class, actor);
         }
-        //
         try {
             List<Map.Entry<ParseEntry, List<String>>> parsed = parse(input);
             for (Map.Entry<ParseEntry, List<String>> entry : parsed) {
                 ParseEntry pe = entry.getKey();
-                String command = pe.input;
+                final String command = pe.input;
+                String full = pe.full;
                 Mask mask = null;
                 if (command.isEmpty()) {
                     mask = parseFromInput(StringMan.join(entry.getValue(), ','), context);
@@ -79,7 +87,16 @@ public class DefaultMaskParser extends FaweParser<Mask> {
                     if (charMask && input.charAt(0) == '=') {
                         return parseFromInput(char0 + "[" + input.substring(1) + "]", context);
                     }
-                    if (mask == null) {
+                    if (char0 == '#') {
+                        throw new SuggestInputParseException(new NoMatchException("Unkown mask: " + full + ", See: //masks"), full,
+                                () -> {
+                                    if (full.length() == 1) return new ArrayList<>(dispatcher.getPrimaryAliases());
+                                    return dispatcher.getAliases().stream().filter(
+                                            s -> s.startsWith(command.toLowerCase())
+                                    ).collect(Collectors.toList());
+                                }
+                        );
+                    }
                     // Legacy syntax
                     if (charMask) {
                         switch (char0) {
@@ -88,13 +105,12 @@ public class DefaultMaskParser extends FaweParser<Mask> {
                             case '{': //
                             case '$': //
                             case '%': {
-                                    command = command.substring(1);
+                                String value = command.substring(1) + ((entry.getValue().isEmpty()) ? "" : "[" + StringMan.join(entry.getValue(), "][") + "]");
-                                    String value = command + ((entry.getValue().isEmpty()) ? "" : "[" + StringMan.join(entry.getValue(), "][") + "]");
                                 if (value.contains(":")) {
                                     if (value.charAt(0) == ':') value.replaceFirst(":", "");
                                     value = value.replaceAll(":", "][");
                                 }
-                                    mask = parseFromInput(char0 + "[" + value + "]", context);
+                                mask = parseFromInput("#" + char0 + "[" + value + "]", context);
                                 break;
                             }
                             case '|':
@@ -115,65 +131,72 @@ public class DefaultMaskParser extends FaweParser<Mask> {
                             int end = command.lastIndexOf(']');
                             mask = parseFromInput(command.substring(1, end == -1 ? command.length() : end), context);
                         } else {
-                                try {
                             context.setPreferringWildcard(true);
                             context.setRestricted(false);
                             BaseBlock block = worldEdit.getBlockFactory().parseFromInput(command, context);
-                                    if (pe.and) {
                             mask = new BlockMask(extent, block);
-                                    } else {
-                                        blocks.add(block);
-                                        continue;
-                                    }
-                                } catch (NoMatchException e) {
-                                    throw new NoMatchException(e.getMessage() + " See: //masks");
-                                }
-                            }
                         }
                     }
                 } else {
                     List<String> args = entry.getValue();
-                    if (!args.isEmpty()) {
+                    String cmdArgs = ((args.isEmpty()) ? "" : " " + StringMan.join(args, " "));
-                        command += " " + StringMan.join(args, " ");
+                    try {
-                    }
+                        mask = (Mask) dispatcher.call(command + cmdArgs, locals, new String[0]);
-                    mask = (Mask) dispatcher.call(command, locals, new String[0]);
-                }
-                if (pe.and) { // &
-                    intersection.add(mask);
-                } else {
-                    if (!intersection.isEmpty()) {
-                        if (intersection.size() == 1) {
-                            throw new InputParseException("Error, floating &");
-                        }
-                        union.add(new MaskIntersection(intersection));
-                        intersection.clear();
-                    }
-                    union.add(mask);
-                }
-            }
                     } catch (Throwable e) {
+                        throw SuggestInputParseException.of(e, full, () -> {
+                            try {
+                                List<String> suggestions = dispatcher.get(command).getCallable().getSuggestions(cmdArgs, locals);
+                                if (suggestions.size() <= 2) {
+                                    for (int i = 0; i < suggestions.size(); i++) {
+                                        String suggestion = suggestions.get(i);
+                                        if (suggestion.indexOf(' ') != 0) {
+                                            String[] split = suggestion.split(" ");
+                                            suggestion = BBC.color("[" + StringMan.join(split, "][") + "]");
+                                            suggestions.set(i, suggestion);
+                                        }
+                                    }
+                                }
+                                return suggestions;
+                            } catch (CommandException e1) {
+                                throw new InputParseException(e1.getMessage());
+                            } catch (Throwable e2) {
+                                e2.printStackTrace();
+                                throw new InputParseException(e2.getMessage());
+                            }
+                        });
+                    }
+                }
+                if (pe.and) {
+                    masks.add(new ArrayList<>());
+                }
+                masks.get(masks.size() - 1).add(mask);
+            }
+        } catch (InputParseException rethrow) {
+            throw rethrow;
+        } catch (Throwable e) {
+            InputParseException ips = SuggestInputParseException.find(e);
+            if (ips != null) throw ips;
+            e.printStackTrace();
             throw new InputParseException(e.getMessage(), e);
         }
-        if (!blocks.isEmpty()) {
+        List<Mask> maskUnions = new ArrayList<>();
-            union.add(new BlockMask(extent, blocks));
+        for (List<Mask> maskList : masks) {
+            if (maskList.size() == 1) {
+                maskUnions.add(maskList.get(0));
+            } else if (maskList.size() != 0) {
+                maskUnions.add(new MaskUnion(maskList));
             }
-        if (!intersection.isEmpty()) {
-            if (intersection.size() == 1) {
-                throw new InputParseException("Error, floating &");
         }
-            union.add(new MaskIntersection(intersection));
+        if (maskUnions.size() == 1) {
-            intersection.clear();
+            return maskUnions.get(0);
-        }
+        } else if (maskUnions.size() != 0) {
-        if (union.isEmpty()) {
+            return new MaskIntersection(maskUnions);
-            return null;
-        } else if (union.size() == 1) {
-            return union.get(0);
         } else {
-            return new MaskUnion(union);
+            return null;
         }
     }
 
-    public static Class<?> inject() {
+    public static Class<DefaultMaskParser> inject() {
         return DefaultMaskParser.class;
     }
 }

core/src/main/java/com/sk89q/worldedit/extension/factory/HashTagPatternParser.java

@@ -1,6 +1,8 @@
 package com.sk89q.worldedit.extension.factory;
 
 import com.boydti.fawe.command.FaweParser;
+import com.boydti.fawe.command.SuggestInputParseException;
+import com.boydti.fawe.config.BBC;
 import com.boydti.fawe.object.random.TrueRandom;
 import com.boydti.fawe.util.StringMan;
 import com.sk89q.minecraft.util.commands.CommandException;
@@ -16,13 +18,15 @@ import com.sk89q.worldedit.function.pattern.RandomPattern;
 import com.sk89q.worldedit.internal.command.ActorAuthorizer;
 import com.sk89q.worldedit.internal.command.WorldEditBinding;
 import com.sk89q.worldedit.internal.expression.Expression;
-import com.sk89q.worldedit.internal.expression.ExpressionException;
 import com.sk89q.worldedit.util.command.Dispatcher;
 import com.sk89q.worldedit.util.command.SimpleDispatcher;
 import com.sk89q.worldedit.util.command.parametric.ParametricBuilder;
+
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
 public class HashTagPatternParser extends FaweParser<Pattern> {
     private final Dispatcher dispatcher;
@@ -47,7 +51,10 @@ public class HashTagPatternParser extends FaweParser<Pattern> {
 
     @Override
     public Pattern parseFromInput(String input, ParserContext context) throws InputParseException {
-        if (input.isEmpty()) return null;
+        if (input.isEmpty()) {
+            throw new SuggestInputParseException("No input provided", "", () -> Stream.of("#", ",", "&").map(n -> n + ":").collect(Collectors.toList()));
+            // TODO namespace
+        }
         List<Double> chances = new ArrayList<>();
         List<Pattern> patterns = new ArrayList<>();
         final CommandLocals locals = new CommandLocals();
@@ -58,7 +65,8 @@ public class HashTagPatternParser extends FaweParser<Pattern> {
         try {
             for (Map.Entry<ParseEntry, List<String>> entry : parse(input)) {
                 ParseEntry pe = entry.getKey();
-                String command = pe.input;
+                final String command = pe.input;
+                String full = pe.full;
                 Pattern pattern = null;
                 double chance = 1;
                 if (command.isEmpty()) {
@@ -70,11 +78,22 @@ public class HashTagPatternParser extends FaweParser<Pattern> {
                     if (charMask && input.charAt(0) == '=') {
                         return parseFromInput(char0 + "[" + input.substring(1) + "]", context);
                     }
+                    if (char0 == '#') {
+                        throw new SuggestInputParseException(new NoMatchException("Unkown pattern: " + full + ", See: //patterns"), full,
+                                () -> {
+                                    if (full.length() == 1) return new ArrayList<>(dispatcher.getPrimaryAliases());
+                                    return dispatcher.getAliases().stream().filter(
+                                            s -> s.startsWith(command.toLowerCase())
+                                    ).collect(Collectors.toList());
+                                }
+                        );
+                    }
+
+
                     if (charMask) {
                         switch (char0) {
                             case '$': {
-                                command = command.substring(1);
+                                String value = command.substring(1) + ((entry.getValue().isEmpty()) ? "" : "[" + StringMan.join(entry.getValue(), "][") + "]");
-                                String value = command + ((entry.getValue().isEmpty()) ? "" : "[" + StringMan.join(entry.getValue(), "][") + "]");
                                 if (value.contains(":")) {
                                     if (value.charAt(0) == ':') value.replaceFirst(":", "");
                                     value = value.replaceAll(":", "][");
@@ -92,15 +111,15 @@ public class HashTagPatternParser extends FaweParser<Pattern> {
                             int percentIndex = command.indexOf('%');
                             if (percentIndex != -1) {  // Legacy percent pattern
                                 chance = Expression.compile(command.substring(0, percentIndex)).evaluate();
-                                command = command.substring(percentIndex + 1);
+                                String value = command.substring(percentIndex + 1);
                                 if (!entry.getValue().isEmpty()) {
-                                    if (!command.isEmpty()) command += " ";
+                                    if (!value.isEmpty()) value += " ";
-                                    command += StringMan.join(entry.getValue(), " ");
+                                    value += StringMan.join(entry.getValue(), " ");
                                 }
-                                pattern = parseFromInput(command, context);
+                                pattern = parseFromInput(value, context);
                             } else { // legacy block pattern
                                 try {
-                                    pattern = worldEdit.getBlockFactory().parseFromInput(command, context);
+                                    pattern = worldEdit.getBlockFactory().parseFromInput(pe.full, context);
                                 } catch (NoMatchException e) {
                                     throw new NoMatchException(e.getMessage() + " See: //patterns");
                                 }
@@ -109,18 +128,45 @@ public class HashTagPatternParser extends FaweParser<Pattern> {
                     }
                 } else {
                     List<String> args = entry.getValue();
-                    if (!args.isEmpty()) {
+                    String cmdArgs = ((args.isEmpty()) ? "" : " " + StringMan.join(args, " "));
-                        command += " " + StringMan.join(args, " ");
+                    try {
+                        pattern = (Pattern) dispatcher.call(command + cmdArgs, locals, new String[0]);
+                    } catch (Throwable e) {
+                        throw SuggestInputParseException.of(e, full, () -> {
+                            try {
+                                List<String> suggestions = dispatcher.get(command).getCallable().getSuggestions(cmdArgs, locals);
+                                if (suggestions.size() <= 2) {
+                                    for (int i = 0; i < suggestions.size(); i++) {
+                                        String suggestion = suggestions.get(i);
+                                        if (suggestion.indexOf(' ') != 0) {
+                                            String[] split = suggestion.split(" ");
+                                            suggestion = BBC.color("[" + StringMan.join(split, "][") + "]");
+                                            suggestions.set(i, suggestion);
+                                        }
+                                    }
+                                }
+                                return suggestions;
+                            } catch (CommandException e1) {
+                                throw new InputParseException(e1.getMessage());
+                            } catch (Throwable e2) {
+                                e2.printStackTrace();
+                                throw new InputParseException(e2.getMessage());
+                            }
+                        });
                     }
-                    pattern = (Pattern) dispatcher.call(command, locals, new String[0]);
                 }
                 if (pattern != null) {
                     patterns.add(pattern);
                     chances.add(chance);
                 }
             }
-        } catch (CommandException | ExpressionException e) {
+        } catch (InputParseException rethrow) {
-            throw new RuntimeException(e);
+            throw rethrow;
+        } catch (Throwable e) {
+            InputParseException ips = SuggestInputParseException.find(e);
+            if (ips != null) throw ips;
+            e.printStackTrace();
+            throw new InputParseException(e.getMessage(), e);
         }
         if (patterns.isEmpty()) {
             return null;
@@ -135,7 +181,8 @@ public class HashTagPatternParser extends FaweParser<Pattern> {
         }
     }
 
-    public static Class<?> inject() {
+
+    public static Class<HashTagPatternParser> inject() {
         return HashTagPatternParser.class;
     }
 }

core/src/main/java/com/sk89q/worldedit/extension/platform/CommandManager.java

@@ -48,17 +48,14 @@ import com.sk89q.worldedit.event.platform.CommandSuggestionEvent;
 import com.sk89q.worldedit.function.factory.Deform;
 import com.sk89q.worldedit.function.factory.Deform.Mode;
 import com.sk89q.worldedit.internal.command.*;
+import com.sk89q.worldedit.scripting.CommandScriptLoader;
 import com.sk89q.worldedit.session.request.Request;
 import com.sk89q.worldedit.util.auth.AuthorizationException;
-import com.sk89q.worldedit.util.command.CommandCallable;
+import com.sk89q.worldedit.util.command.*;
-import com.sk89q.worldedit.util.command.Dispatcher;
-import com.sk89q.worldedit.util.command.InvalidUsageException;
 import com.sk89q.worldedit.util.command.composition.ProvidedValue;
 import com.sk89q.worldedit.util.command.fluent.CommandGraph;
 import com.sk89q.worldedit.util.command.fluent.DispatcherNode;
-import com.sk89q.worldedit.util.command.parametric.ExceptionConverter;
+import com.sk89q.worldedit.util.command.parametric.*;
-import com.sk89q.worldedit.util.command.parametric.LegacyCommandsHandler;
-import com.sk89q.worldedit.util.command.parametric.ParametricBuilder;
 import com.sk89q.worldedit.util.eventbus.Subscribe;
 import com.sk89q.worldedit.util.logging.DynamicStreamHandler;
 import com.sk89q.worldedit.util.logging.LogFormat;
@@ -184,13 +181,13 @@ public final class CommandManager {
      * @param clazz   The class containing all the sub command methods
      * @param aliases The aliases to give the command
      */
-    public void registerCommands(Object clazz, Object processor, String... aliases) {
+    public void registerCommands(Object clazz, CallableProcessor processor, String... aliases) {
         if (platform != null) {
             if (aliases.length == 0) {
-                builder.registerMethodsAsCommands(dispatcher, clazz);
+                builder.registerMethodsAsCommands(dispatcher, clazz, processor);
             } else {
                 DispatcherNode graph = new CommandGraph().builder(builder).commands();
-                graph = graph.registerMethods(clazz);
+                graph = graph.registerMethods(clazz, processor);
                 dispatcher.registerCommand(graph.graph().getDispatcher(), aliases);
             }
             platform.registerCommands(dispatcher);
@@ -244,6 +241,9 @@ public final class CommandManager {
             }
         }
 
+        commandMap.clear();
+        methodMap.clear();
+
         dispatcher = graph
                 .group("/anvil")
                 .describeAs("Anvil command")
@@ -295,6 +295,13 @@ public final class CommandManager {
 
     public void register(Platform platform) {
         log.log(Level.FINE, "Registering commands with " + platform.getClass().getCanonicalName());
+        this.platform = null;
+
+        try {
+            new CommandScriptLoader().load();
+        } catch (Throwable e) {
+            e.printStackTrace();
+        }
 
         LocalConfiguration config = platform.getConfiguration();
         boolean logging = config.logCommands;
@@ -403,6 +410,7 @@ public final class CommandManager {
             // exceptions without writing a hook into every dispatcher, we need to unwrap these
             // exceptions and rethrow their converted form, if their is one.
             try {
+                Request.request().setActor(finalActor);
                 Object result = dispatcher.call(Joiner.on(" ").join(split), locals, new String[0]);
             } catch (Throwable t) {
                 // Use the exception converter to convert the exception if any of its causes
@@ -485,6 +493,16 @@ public final class CommandManager {
         TaskManager.IMP.taskNow(new Runnable() {
             @Override
             public void run() {
+//                int space0 = args.indexOf(' ');
+//                String arg0 = space0 == -1 ? args : args.substring(0, space0);
+//                CommandMapping cmd = dispatcher.get(arg0);
+//                if (cmd != null && cmd.getCallable() instanceof AParametricCallable) {
+//                    Command info = ((AParametricCallable) cmd.getCallable()).getDefinition();
+//                    if (!info.queued()) {
+//                        handleCommandOnCurrentThread(finalEvent);
+//                        return;
+//                    }
+//                }
                 if (!fp.runAction(new Runnable() {
                     @Override
                     public void run() {
@@ -522,7 +540,8 @@ public final class CommandManager {
         return commandLog;
     }
 
-    public static Class<?> inject() {
+
+    public static Class<CommandManager> inject() {
         return CommandManager.class;
     }
 }

core/src/main/java/com/sk89q/worldedit/extension/platform/PlayerProxy.java

@@ -1,6 +1,8 @@
 package com.sk89q.worldedit.extension.platform;
 
+import com.boydti.fawe.util.ReflectionUtils;
 import com.google.common.base.Preconditions;
+import com.sk89q.util.ReflectionUtil;
 import com.sk89q.worldedit.Vector;
 import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.WorldVector;
@@ -13,7 +15,13 @@ import com.sk89q.worldedit.internal.cui.CUIEvent;
 import com.sk89q.worldedit.session.SessionKey;
 import com.sk89q.worldedit.util.Location;
 import com.sk89q.worldedit.world.World;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
 import java.util.UUID;
+import java.util.function.Function;
+import java.util.stream.Collectors;
 import javax.annotation.Nullable;
 
 public class PlayerProxy extends AbstractPlayerActor {

core/src/main/java/com/sk89q/worldedit/extent/AbstractDelegateExtent.java

@@ -213,9 +213,7 @@ public class AbstractDelegateExtent implements LightingExtent {
     }
 
     @Override
-    public final
+    public @Nullable Operation commit() {
-    @Nullable
-    Operation commit() {
         Operation ours = commitBefore();
         Operation other = null;
         if (extent != this) other = extent.commit();

core/src/main/java/com/sk89q/worldedit/extent/clipboard/ClipboardFormats.java

@@ -0,0 +1,97 @@
+/*
+ * 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.extent.clipboard;
+
+import com.google.common.collect.HashMultimap;
+import com.google.common.collect.Multimap;
+import com.sk89q.worldedit.extent.clipboard.io.ClipboardFormat;
+
+import javax.annotation.Nullable;
+import java.io.File;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.List;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+public class ClipboardFormats {
+    /**
+     * Find the clipboard format named by the given alias.
+     *
+     * @param alias
+     *            the alias
+     * @return the format, otherwise null if none is matched
+     */
+    @Nullable
+    public static ClipboardFormat findByAlias(String alias) {
+        return ClipboardFormat.findByAlias(alias);
+    }
+
+    /**
+     * Detect the format of given a file.
+     *
+     * @param file
+     *            the file
+     * @return the format, otherwise null if one cannot be detected
+     */
+    @Nullable
+    public static ClipboardFormat findByFile(File file) {
+        checkNotNull(file);
+
+        for (ClipboardFormat format : ClipboardFormat.values()) {
+            if (format.isFormat(file)) {
+                return format;
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * @return a multimap from a file extension to the potential matching formats.
+     */
+    public static Multimap<String, ClipboardFormat> getFileExtensionMap() {
+        HashMultimap<String, ClipboardFormat> map = HashMultimap.create();
+        for (ClipboardFormat format : ClipboardFormat.values()) {
+            map.put(format.getExtension(), format);
+        }
+        return map;
+    }
+
+    public static Collection<ClipboardFormat> getAll() {
+        return Arrays.asList(ClipboardFormat.values());
+    }
+
+    /**
+     * Not public API, only used by SchematicCommands.
+     * It is not in SchematicCommands because it may rely on internal register calls.
+     */
+    public static String[] getFileExtensionArray() {
+        List<String> exts = new ArrayList<>();
+        HashMultimap<String, ClipboardFormat> map = HashMultimap.create();
+        for (ClipboardFormat format : ClipboardFormat.values()) {
+            exts.add(format.getExtension());
+        }
+        return exts.toArray(new String[exts.size()]);
+    }
+
+    private ClipboardFormats() {}
+}

core/src/main/java/com/sk89q/worldedit/extent/clipboard/io/ClipboardFormat.java

@@ -45,6 +45,7 @@ import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.Vector;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.entity.Player;
+import com.sk89q.worldedit.event.extent.PlayerSaveClipboardEvent;
 import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.extent.clipboard.BlockArrayClipboard;
 import com.sk89q.worldedit.extent.clipboard.Clipboard;
@@ -540,6 +541,18 @@ public enum ClipboardFormat {
         return aliasMap.get(alias.toLowerCase().trim());
     }
 
+    @Nullable
+    public static ClipboardFormat findByExtension(String extension) {
+        checkNotNull(extension);
+        extension = extension.toLowerCase();
+        for (ClipboardFormat format : values()) {
+            if (format.getExtension().equalsIgnoreCase(extension)) {
+                return format;
+            }
+        }
+        return null;
+    }
+
     /**
      * Detect the format given a file.
      *

core/src/main/java/com/sk89q/worldedit/scripting/CommandScriptLoader.java

@@ -0,0 +1,102 @@
+package com.sk89q.worldedit.scripting;
+
+import com.boydti.fawe.Fawe;
+import com.boydti.fawe.FaweAPI;
+import com.boydti.fawe.command.FaweParser;
+import com.boydti.fawe.config.Settings;
+import com.boydti.fawe.util.MainUtil;
+import com.google.common.base.Charsets;
+import com.google.common.io.CharStreams;
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.command.BrushProcessor;
+import com.sk89q.worldedit.extension.factory.DefaultMaskParser;
+import com.sk89q.worldedit.extension.factory.HashTagPatternParser;
+import com.sk89q.worldedit.extension.platform.CommandManager;
+import com.sk89q.worldedit.util.command.ProcessedCallable;
+import com.sk89q.worldedit.util.command.parametric.FunctionParametricCallable;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.nio.file.Files;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+
+public class CommandScriptLoader {
+    private final NashornCraftScriptEngine engine;
+    private final String loader;
+
+    public CommandScriptLoader() throws IOException {
+        this.engine = new NashornCraftScriptEngine();
+
+        try (InputStream inputStream = Fawe.class.getResourceAsStream("/cs_adv.js")) {
+            this.loader = CharStreams.toString(new InputStreamReader(inputStream, Charsets.UTF_8));
+        }
+    }
+
+    /**
+     * Load all file commands
+     * @throws Throwable
+     */
+    public void load() throws Throwable {
+        File commands = MainUtil.getFile(Fawe.imp().getDirectory(), Settings.IMP.PATHS.COMMANDS);
+        if (commands.exists()) {
+            for (File file : commands.listFiles()) add(new String[0], file);
+        }
+    }
+
+    private void add(String[] aliases, File file) throws Throwable {
+        if (file.isDirectory()) {
+            if (aliases.length == 0) {
+                String[] newAliases = new String[] {file.getName()};
+                for (File newFile : file.listFiles()) {
+                    add(newAliases, newFile);
+                }
+            } else {
+                Fawe.debug("Ignoring nested directory: " + file);
+            }
+        } else {
+            String name = file.getName();
+            if (name.endsWith(".js")) {
+                Fawe.debug("Loading script: " + name);
+                List<FunctionParametricCallable> cmds = getCommands(file, Collections.emptyMap());
+                FaweParser parser = null;
+                if (aliases.length == 1) {
+                    switch (aliases[0]) {
+                        case "brush":
+                            if (!cmds.isEmpty()) {
+                                BrushProcessor processor = new BrushProcessor(WorldEdit.getInstance());
+                                for (FunctionParametricCallable cmd : cmds) {
+                                    ProcessedCallable processed = new ProcessedCallable(cmd, processor);
+                                    CommandManager.getInstance().registerCommand(aliases, cmd.getCommand(), processed);
+                                }
+                            }
+                            return;
+                        case "patterns":
+                            parser = FaweAPI.getParser(HashTagPatternParser.class);
+                            break;
+                        case "masks":
+                            parser = FaweAPI.getParser(DefaultMaskParser.class);
+                            break;
+                    }
+                    if (parser != null) {
+                        for (FunctionParametricCallable cmd : cmds) {
+                            parser.getDispatcher().registerCommand(cmd, cmd.getCommand().aliases());
+                        }
+                        return;
+                    }
+                }
+                for (FunctionParametricCallable cmd : cmds) {
+                    CommandManager.getInstance().registerCommand(aliases, cmd.getCommand(), cmd);
+                }
+            }
+        }
+    }
+
+    private List<FunctionParametricCallable> getCommands(File file, Map<String, Object> vars) throws Throwable {
+        String script = new String(Files.readAllBytes(file.toPath())) + loader;
+        return (List) engine.evaluate(script, file.getPath(), vars);
+    }
+}

core/src/main/java/com/sk89q/worldedit/scripting/NashornCraftScriptEngine.java

@@ -0,0 +1,79 @@
+/*
+ * 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.scripting;
+
+import com.boydti.fawe.Fawe;
+import com.sk89q.worldedit.WorldEditException;
+import jdk.nashorn.api.scripting.NashornScriptEngineFactory;
+
+import javax.script.ScriptEngine;
+import javax.script.ScriptException;
+import javax.script.SimpleBindings;
+import java.util.Map;
+
+public class NashornCraftScriptEngine implements CraftScriptEngine {
+    private static NashornScriptEngineFactory FACTORY;
+    private int timeLimit;
+
+    @Override
+    public void setTimeLimit(int milliseconds) {
+        timeLimit = milliseconds;
+    }
+
+    @Override
+    public int getTimeLimit() {
+        return timeLimit;
+    }
+
+    @Override
+    public Object evaluate(String script, String filename, Map<String, Object> args) throws Throwable {
+        ClassLoader cl = Fawe.get().getClass().getClassLoader();
+        Thread.currentThread().setContextClassLoader(cl);
+        synchronized (NashornCraftScriptEngine.class) {
+            if (FACTORY == null) FACTORY = new NashornScriptEngineFactory();
+        }
+        ;
+        ScriptEngine engine = FACTORY.getScriptEngine("--language=es6");
+        SimpleBindings bindings = new SimpleBindings();
+
+        for (Map.Entry<String, Object> entry : args.entrySet()) {
+            bindings.put(entry.getKey(), entry.getValue());
+        }
+
+       try {
+           Object result = engine.eval(script, bindings);
+           return result;
+        } catch (Error e) {
+            e.printStackTrace();
+            throw new ScriptException(e.getMessage());
+        } catch (Throwable e) {
+            e.printStackTrace();
+            while (e.getCause() != null) {
+                e = e.getCause();
+            }
+            if (e instanceof WorldEditException) {
+                throw e;
+            }
+            throw e;
+        } finally {
+        }
+    }
+
+}

core/src/main/java/com/sk89q/worldedit/session/SessionManager.java

@@ -169,7 +169,6 @@ public class SessionManager {
         checkNotNull(owner);
 
         LocalSession session = getIfPresent(owner);
-        LocalConfiguration config = worldEdit.getConfiguration();
         SessionKey sessionKey = owner.getSessionKey();
 
         // No session exists yet -- create one
@@ -182,12 +181,14 @@ public class SessionManager {
                 session = new LocalSession();
             }
 
+            LocalConfiguration config = worldEdit.getConfiguration();
             session.setConfiguration(config);
             session.setBlockChangeLimit(config.defaultChangeLimit);
 
             sessions.put(getKey(owner), new SessionHolder(sessionKey, session));
         }
 
+        LocalConfiguration config = worldEdit.getConfiguration();
         // Set the limit on the number of blocks that an operation can
         // change at once, or don't if the owner has an override or there
         // is no limit. There is also a default limit

core/src/main/java/com/sk89q/worldedit/session/request/Request.java

@@ -21,7 +21,10 @@ package com.sk89q.worldedit.session.request;
 
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.LocalSession;
+import com.sk89q.worldedit.entity.Player;
+import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.extent.Extent;
+import com.sk89q.worldedit.util.command.parametric.ParametricCallable;
 import com.sk89q.worldedit.world.World;
 import javax.annotation.Nullable;
 
@@ -30,19 +33,16 @@ import javax.annotation.Nullable;
  */
 public final class Request {
 
-    private static final ThreadLocal<Request> threadLocal =
+    private static final ThreadLocal<Request> threadLocal = ThreadLocal.withInitial(Request::new);
-            new ThreadLocal<Request>() {
-                @Override
-                protected Request initialValue() {
-                    return new Request();
-                }
-            };
 
     private
     @Nullable
     World world;
     private
     @Nullable
+    Actor actor;
+    private
+    @Nullable
     LocalSession session;
     private
     @Nullable
@@ -87,6 +87,15 @@ public final class Request {
         return null;
     }
 
+    @Nullable
+    public Actor getActor() {
+        return actor;
+    }
+
+    public void setActor(@Nullable Actor actor) {
+        this.actor = actor;
+    }
+
     /**
      * Get the request session.
      *
@@ -143,7 +152,8 @@ public final class Request {
         threadLocal.remove();
     }
 
-    public static Class<?> inject() {
+
+    public static Class<Request> inject() {
         return Request.class;
     }
 }

core/src/main/java/com/sk89q/worldedit/util/command/SimpleDispatcher.java

@@ -72,6 +72,7 @@ public class SimpleDispatcher implements Dispatcher {
                     continue;
                 } else {
                     Fawe.debug("Replacing commands is currently undefined behavior: " + StringMan.getString(alias));
+                    commands.put(lower, mapping);
                     continue;
                 }
             }

core/src/main/java/com/sk89q/worldedit/util/command/parametric/AParametricCallable.java

@@ -0,0 +1,310 @@
+package com.sk89q.worldedit.util.command.parametric;
+
+import com.boydti.fawe.command.SuggestInputParseException;
+import com.boydti.fawe.config.BBC;
+import com.boydti.fawe.util.chat.UsageMessage;
+import com.sk89q.minecraft.util.commands.*;
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.input.InputParseException;
+import com.sk89q.worldedit.util.command.*;
+
+import java.lang.reflect.InvocationTargetException;
+import java.util.*;
+
+public abstract class AParametricCallable implements CommandCallable {
+//    private final ParametricBuilder builder;
+//    private ParameterData[] parameters;
+//    private Set<Character> valueFlags = new HashSet<Character>();
+//    private boolean anyFlags;
+//    private Set<Character> legacyFlags = new HashSet<Character>();
+//    private SimpleDescription description = new SimpleDescription();
+//    private String permission;
+//    private Command command;
+
+    public abstract ParameterData[] getParameters();
+    public abstract Set<Character> getValueFlags();
+    public abstract Set<Character> getLegacyFlags();
+    public abstract SimpleDescription getDescription();
+    public abstract String[] getPermissions();
+    public abstract ParametricBuilder getBuilder();
+    public abstract boolean anyFlags();
+    public abstract Command getCommand();
+    public Command getDefinition() {
+        return getCommand();
+    }
+    public abstract String getGroup();
+    @Override
+    public abstract String toString();
+
+    /**
+     * Get the right {@link ArgumentStack}.
+     *
+     * @param parameter the parameter
+     * @param existing  the existing scoped context
+     * @return the context to use
+     */
+    public static ArgumentStack getScopedContext(Parameter parameter, ArgumentStack existing) {
+        if (parameter.getFlag() != null) {
+            CommandContext context = existing.getContext();
+
+            if (parameter.isValueFlag()) {
+                return new StringArgumentStack(context, context.getFlag(parameter.getFlag()), false);
+            } else {
+                String v = context.hasFlag(parameter.getFlag()) ? "true" : "false";
+                return new StringArgumentStack(context, v, true);
+            }
+        }
+
+        return existing;
+    }
+
+    /**
+     * Get whether a parameter is allowed to consume arguments.
+     *
+     * @param i      the index of the parameter
+     * @param scoped the scoped context
+     * @return true if arguments may be consumed
+     */
+    public boolean mayConsumeArguments(int i, ContextArgumentStack scoped) {
+        CommandContext context = scoped.getContext();
+        ParameterData parameter = getParameters()[i];
+
+        // Flag parameters: Always consume
+        // Required non-flag parameters: Always consume
+        // Optional non-flag parameters:
+        //     - Before required parameters: Consume if there are 'left over' args
+        //     - At the end: Always consumes
+
+        if (parameter.isOptional()) {
+            if (parameter.getFlag() != null) {
+                return !parameter.isValueFlag() || context.hasFlag(parameter.getFlag());
+            } else {
+                int numberFree = context.argsLength() - scoped.position();
+                for (int j = i; j < getParameters().length; j++) {
+                    if (getParameters()[j].isNonFlagConsumer() && !getParameters()[j].isOptional()) {
+                        // We already checked if the consumed count was > -1
+                        // when we created this object
+                        numberFree -= getParameters()[j].getConsumedCount();
+                    }
+                }
+
+                // Skip this optional parameter
+                if (numberFree < 1) {
+                    return false;
+                }
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Get the default value for a parameter.
+     *
+     * @param i      the index of the parameter
+     * @param scoped the scoped context
+     * @return a value
+     * @throws ParameterException on an error
+     * @throws CommandException   on an error
+     */
+    public Object getDefaultValue(int i, ContextArgumentStack scoped) throws ParameterException, CommandException, InvocationTargetException {
+        CommandContext context = scoped.getContext();
+        ParameterData parameter = getParameters()[i];
+
+        String[] defaultValue = parameter.getDefaultValue();
+        if (defaultValue != null) {
+            try {
+                return parameter.getBinding().bind(parameter, new StringArgumentStack(context, defaultValue, false), false);
+            } catch (MissingParameterException e) {
+                throw new ParametricException(
+                        "The default value of the parameter using the binding " +
+                                parameter.getBinding().getClass() + " in the method\n" +
+                                toString() + "\nis invalid");
+            }
+        }
+
+        return null;
+    }
+
+
+    /**
+     * Check to see if all arguments, including flag arguments, were consumed.
+     *
+     * @param scoped the argument scope
+     * @throws UnconsumedParameterException thrown if parameters were not consumed
+     */
+    public void checkUnconsumed(ContextArgumentStack scoped) throws UnconsumedParameterException {
+        CommandContext context = scoped.getContext();
+        String unconsumed;
+        String unconsumedFlags = getUnusedFlags(context);
+
+        if ((unconsumed = scoped.getUnconsumed()) != null) {
+            throw new UnconsumedParameterException(unconsumed + " " + unconsumedFlags);
+        }
+
+        if (unconsumedFlags != null) {
+            throw new UnconsumedParameterException(unconsumedFlags);
+        }
+    }
+
+    /**
+     * Get any unused flag arguments.
+     *
+     * @param context the command context
+     */
+    public String getUnusedFlags(CommandContext context) {
+        if (!anyFlags()) {
+            Set<Character> unusedFlags = null;
+            for (char flag : context.getFlags()) {
+                boolean found = false;
+
+                if (getLegacyFlags().contains(flag)) {
+                    break;
+                }
+
+                for (ParameterData parameter : getParameters()) {
+                    Character paramFlag = parameter.getFlag();
+                    if (paramFlag != null && flag == paramFlag) {
+                        found = true;
+                        break;
+                    }
+                }
+
+                if (!found) {
+                    if (unusedFlags == null) {
+                        unusedFlags = new HashSet<Character>();
+                    }
+                    unusedFlags.add(flag);
+                }
+            }
+
+            if (unusedFlags != null) {
+                StringBuilder builder = new StringBuilder();
+                for (Character flag : unusedFlags) {
+                    builder.append("-").append(flag).append(" ");
+                }
+
+                return builder.toString().trim();
+            }
+        }
+
+        return null;
+    }
+
+    @Override
+    public boolean testPermission(CommandLocals locals) {
+        String[] perms = getPermissions();
+        if (perms != null && perms.length != 0) {
+            for (String perm : perms) {
+                if (getBuilder().getAuthorizer().testPermission(locals, perm)) {
+                    return true;
+                }
+            }
+
+            return false;
+        } else {
+            return true;
+        }
+    }
+
+    @Override
+    public List<String> getSuggestions(String arguments, CommandLocals locals) throws CommandException {
+        String[] split = ("ignored" + " " + arguments).split(" ", -1);
+
+        // &a<current> &f<next>
+        // &cerrors
+
+        CommandContext context = new CommandContext(split, getValueFlags(), !arguments.endsWith(" "), locals);
+        ContextArgumentStack scoped = new ContextArgumentStack(context);
+        SuggestionContext suggestable = context.getSuggestionContext();
+
+        List<String> suggestions = new ArrayList<>(2);
+        ParameterData parameter = null;
+        ParameterData[] parameters = getParameters();
+        String consumed = "";
+
+        boolean hasSuggestion = false;
+        int maxConsumedI = 0; // The maximum argument index
+        int minConsumedI = 0; // The minimum argument that has been consumed
+        // Collect parameters
+        try {
+            for (;maxConsumedI < parameters.length; maxConsumedI++) {
+                parameter = parameters[maxConsumedI];
+                if (parameter.getBinding().getBehavior(parameter) != BindingBehavior.PROVIDES) {
+                    // Parse the user input into a method argument
+                    ArgumentStack usedArguments = getScopedContext(parameter, scoped);
+
+                    usedArguments.mark();
+                    try {
+                        parameter.getBinding().bind(parameter, usedArguments, false);
+                        minConsumedI = maxConsumedI + 1;
+                    } catch (Throwable e) {
+                        while (e.getCause() != null && !(e instanceof ParameterException || e instanceof InvocationTargetException)) e = e.getCause();
+                        consumed = usedArguments.reset();
+                        // Not optional? Then we can't execute this command
+                        if (!parameter.isOptional()) {
+                            if (!(e instanceof MissingParameterException)) minConsumedI = maxConsumedI;
+                            throw e;
+                        }
+                    }
+                }
+            }
+            if (minConsumedI >= maxConsumedI && (parameter == null || parameter.getType() == CommandContext.class)) checkUnconsumed(scoped);
+        } catch (MissingParameterException ignore) {
+        } catch (UnconsumedParameterException e) {
+            suggestions.add(BBC.color("&cToo many parameters! Unused parameters: " + e.getUnconsumed()));
+        } catch (ParameterException e) {
+            String name = parameter.getName();
+            suggestions.add(BBC.color("&cFor parameter '" + name + "': " + e.getMessage()));
+        } catch (InvocationTargetException e) {
+            Throwable tmp = e;
+            SuggestInputParseException suggestion = SuggestInputParseException.get(tmp);
+            try {
+                if (suggestion != null && !suggestion.getSuggestions().isEmpty()) {
+                    hasSuggestion = true;
+                    suggestions.addAll(suggestion.getSuggestions());
+                } else {
+                    Throwable t = tmp;
+                    while (t.getCause() != null) t = t.getCause();
+                    String msg = t.getMessage();
+                    String name = parameter.getName();
+                    if (msg != null && !msg.isEmpty())
+                        suggestions.add(BBC.color("&cFor parameter '" + name + "': " + msg));
+                }
+            } catch (InputParseException e2) {
+                throw new WrappedCommandException(e2);
+            }
+        } catch (Throwable t) {
+            t.printStackTrace();
+            throw new WrappedCommandException(t);
+        }
+        // If there's 1 or less suggestions already, then show parameter suggestion
+        if (!hasSuggestion && suggestions.size() <= 1) {
+            StringBuilder suggestion = new StringBuilder();
+            outer:
+            for (String prefix = ""; minConsumedI < parameters.length; minConsumedI++) {
+                parameter = parameters[minConsumedI];
+                if (parameter.getBinding().getBehavior(parameter) != BindingBehavior.PROVIDES) {
+                    suggestion.append(prefix);
+                    List<String> argSuggestions = parameter.getBinding().getSuggestions(parameter, consumed);
+                    switch (argSuggestions.size()) {
+                        case 0:
+                            break;
+                        case 1:
+                            suggestion.append(argSuggestions.iterator().next());
+                            break;
+                        default:
+                            suggestion.setLength(0);
+                            suggestions.addAll(argSuggestions);
+                            break outer;
+
+                    }
+                    consumed = "";
+                    prefix = " ";
+                }
+            }
+            if (suggestion.length() != 0) suggestions.add(suggestion.toString());
+        }
+        return suggestions;
+    }
+}

core/src/main/java/com/sk89q/worldedit/util/command/parametric/ContextArgumentStack.java

@@ -139,7 +139,7 @@ public class ContextArgumentStack implements ArgumentStack {
      */
     @Override
     public String reset() {
-        String value = context.getString(markedIndex, index - 1);
+        String value = (index - 1 > markedIndex) ? context.getString(markedIndex, index - 1) : "";
         index = markedIndex;
         return value;
     }

core/src/main/java/com/sk89q/worldedit/util/command/parametric/FunctionParametricCallable.java

@@ -0,0 +1,328 @@
+package com.sk89q.worldedit.util.command.parametric;
+
+import com.boydti.fawe.util.StringMan;
+import com.google.common.primitives.Chars;
+import com.sk89q.minecraft.util.commands.*;
+import com.sk89q.worldedit.util.command.*;
+
+import java.lang.annotation.Annotation;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Type;
+import java.util.*;
+import java.util.function.Function;
+
+public class FunctionParametricCallable extends AParametricCallable {
+
+    private final ParametricBuilder builder;
+    private final ParameterData[] parameters;
+    private final Set<Character> valueFlags = new HashSet<Character>();
+    private final boolean anyFlags;
+    private final Set<Character> legacyFlags = new HashSet<Character>();
+    private final SimpleDescription description = new SimpleDescription();
+    private final String permission;
+    private final Command command;
+    private final Function<Object[], ?> function;
+    private final String group;
+
+    public FunctionParametricCallable(ParametricBuilder builder, String group, Command command, String permission, List<String> arguments, Function<Object[], ?> function) {
+        this.command = command;
+        this.permission = permission;
+        this.builder = builder;
+        this.function = function;
+        this.group = group;
+
+        List<Object[]> paramParsables = new ArrayList<>();
+        {
+            Map<Type, Binding> bindings = builder.getBindings();
+            Map<String, Type> unqualified = new HashMap<>();
+            for (Map.Entry<Type, Binding> entry : bindings.entrySet()) {
+                Type type = entry.getKey();
+                String typeStr = type.getTypeName();
+                unqualified.put(typeStr, type);
+                unqualified.put(typeStr.substring(typeStr.lastIndexOf('.') + 1), type);
+            }
+            {
+                Object[] param = null; // name | type | optional value
+                boolean checkEq = false;
+                int checkEqI = 0;
+                for (int i = 0; i < arguments.size(); i++) {
+                    String arg = arguments.get(i);
+                    if (arg.equals("=")) {
+                        checkEqI++;
+                        checkEq = true;
+                    } else if (param == null || !checkEq) {
+                        if (param != null) paramParsables.add(param);
+                        param = new Object[3];
+                        param[0] = arg;
+                        if (arg.length() == 1 && command.flags().contains(arg)) {
+                            param[1] = Boolean.class;
+                        } else {
+                            param[1] = String.class;
+                        }
+                        param[2] = null;
+                        checkEqI = 0;
+                        checkEq = false;
+                    } else {
+                        if (checkEqI == 1) {
+                            param[1] = unqualified.getOrDefault(arg, String.class);
+                            checkEq = false;
+                        }
+                        else if (checkEqI == 2) {
+                            char c = arg.charAt(0);
+                            if (c == '\'' || c == '"') arg = arg.substring(1, arg.length() - 1);
+                            param[2] = arg;
+                            checkEqI = 0;
+                            checkEq = false;
+                        }
+                    }
+                }
+                if (param != null) paramParsables.add(param);
+            }
+        }
+
+        parameters = new ParameterData[paramParsables.size()];
+        List<Parameter> userParameters = new ArrayList<Parameter>();
+
+        // This helps keep tracks of @Nullables that appear in the middle of a list
+        // of parameters
+        int numOptional = 0;
+//
+        // Go through each parameter
+        for (int i = 0; i < paramParsables.size(); i++) {
+            Object[] parsable = paramParsables.get(i);
+            String paramName = (String) parsable[0];
+            Type type = (Type) parsable[1];
+            String optional = (String) parsable[2];
+
+            ParameterData parameter = new ParameterData();
+            parameter.setType(type);
+            parameter.setModifiers(new Annotation[0]);
+
+            boolean flag = paramName.length() == 1 && command.flags().contains(paramName);
+            if (flag) {
+                parameter.setFlag(paramName.charAt(0), type != boolean.class && type != Boolean.class);
+            }
+
+            if (optional != null) {
+                parameter.setOptional(true);
+                if (!optional.equalsIgnoreCase("null")) parameter.setDefaultValue(new String[]{optional});
+            }
+
+            parameter.setName(paramName);
+
+            // Track all value flags
+            if (parameter.isValueFlag()) {
+                valueFlags.add(parameter.getFlag());
+            }
+
+            // No special @annotation binding... let's check for the type
+            if (parameter.getBinding() == null) {
+                parameter.setBinding(builder.getBindings().get(type));
+
+                // Don't know how to parse for this type of value
+                if (parameter.getBinding() == null) {
+                    throw new ParametricException("Don't know how to handle the parameter type '" + type + "' in\n" + StringMan.getString(command.aliases()));
+                }
+            }
+
+            // Do some validation of this parameter
+            parameter.validate(() -> StringMan.getString(command.aliases()), i + 1);
+
+            // Keep track of optional parameters
+            if (parameter.isOptional() && parameter.getFlag() == null) {
+                numOptional++;
+            } else {
+                if (numOptional > 0 && parameter.isNonFlagConsumer()) {
+                    if (parameter.getConsumedCount() < 0) {
+                        throw new ParametricException(
+                                "Found an parameter using the binding " +
+                                        parameter.getBinding().getClass().getCanonicalName() +
+                                        "\nthat does not know how many arguments it consumes, but " +
+                                        "it follows an optional parameter\nMethod: " + StringMan.getString(command.aliases()));
+                    }
+                }
+            }
+
+            parameters[i] = parameter;
+
+            // Make a list of "real" parameters
+            if (parameter.isUserInput()) {
+                userParameters.add(parameter);
+            }
+        }
+
+
+        // Gather legacy flags
+        anyFlags = command.anyFlags();
+        legacyFlags.addAll(Chars.asList(command.flags().toCharArray()));
+
+        // Finish description
+        description.setDescription(!command.desc().isEmpty() ? command.desc() : null);
+        description.setHelp(!command.help().isEmpty() ? command.help() : null);
+        description.overrideUsage(!command.usage().isEmpty() ? command.usage() : null);
+        description.setPermissions(Arrays.asList(permission));
+
+        if (command.usage().isEmpty() && (command.min() > 0 || command.max() > 0)) {
+            boolean hasUserParameters = false;
+
+            for (ParameterData parameter : parameters) {
+                if (parameter.getBinding().getBehavior(parameter) != BindingBehavior.PROVIDES) {
+                    hasUserParameters = true;
+                    break;
+                }
+            }
+
+            if (!hasUserParameters) {
+                description.overrideUsage("(unknown usage information)");
+            }
+        }
+
+        // Set parameters
+        description.setParameters(userParameters);
+    }
+
+    @Override
+    public String getGroup() {
+        return group;
+    }
+
+    @Override
+    public Command getCommand() {
+        return command;
+    }
+
+    @Override
+    public ParameterData[] getParameters() {
+        return parameters;
+    }
+
+    public Set<Character> getValueFlags() {
+        return valueFlags;
+    }
+
+    @Override
+    public Set<Character> getLegacyFlags() {
+        return legacyFlags;
+    }
+
+    @Override
+    public Object call(String stringArguments, CommandLocals locals, String[] parentCommands) throws CommandException {
+        // Test permission
+        if (!testPermission(locals)) {
+            throw new CommandPermissionsException();
+        }
+        if (locals.get(CommandCallable.class) == null) locals.put(CommandCallable.class, this);
+
+        String calledCommand = parentCommands.length > 0 ? parentCommands[parentCommands.length - 1] : "_";
+        String[] split = (calledCommand + " " + stringArguments).split(" ", -1);
+        CommandContext context = new CommandContext(split, getValueFlags(), false, locals);
+
+        // Provide help if -? is specified
+        if (context.hasFlag('?')) {
+            throw new InvalidUsageException(null, this, true);
+        }
+
+        Object[] args = new Object[parameters.length];
+        ContextArgumentStack arguments = new ContextArgumentStack(context);
+        ParameterData parameter = null;
+
+        try {
+            // preProcess handlers
+            {
+
+            }
+
+            // Collect parameters
+            for (int i = 0; i < parameters.length; i++) {
+                parameter = parameters[i];
+
+                if (mayConsumeArguments(i, arguments)) {
+                    // Parse the user input into a method argument
+                    ArgumentStack usedArguments = getScopedContext(parameter, arguments);
+
+                    try {
+                        usedArguments.mark();
+                        args[i] = parameter.getBinding().bind(parameter, usedArguments, false);
+                    } catch (ParameterException e) {
+                        // Not optional? Then we can't execute this command
+                        if (!parameter.isOptional()) {
+                            throw e;
+                        }
+
+                        usedArguments.reset();
+                        args[i] = getDefaultValue(i, arguments);
+                    }
+                } else {
+                    args[i] = getDefaultValue(i, arguments);
+                }
+            }
+
+            // Check for unused arguments
+            checkUnconsumed(arguments);
+
+            // preInvoke handlers
+            {
+                if (context.argsLength() < command.min()) {
+                    throw new MissingParameterException();
+                }
+                if (command.max() != -1 && context.argsLength() > command.max()) {
+                    throw new UnconsumedParameterException(context.getRemainingString(command.max()));
+                }
+            }
+
+            // Execute!
+            Object result = function.apply(args);
+
+            // postInvoke handlers
+            {
+            }
+            return result;
+        } catch (MissingParameterException e) {
+            throw new InvalidUsageException("Too few parameters!", this, true);
+        } catch (UnconsumedParameterException e) {
+            throw new InvalidUsageException("Too many parameters! Unused parameters: " + e.getUnconsumed(), this, true);
+        } catch (ParameterException e) {
+            assert parameter != null;
+            String name = parameter.getName();
+
+            throw new InvalidUsageException("For parameter '" + name + "': " + e.getMessage(), this, true);
+        } catch (InvocationTargetException e) {
+            if (e.getCause() instanceof CommandException) {
+                throw (CommandException) e.getCause();
+            }
+            throw new WrappedCommandException(e);
+        } catch (Throwable t) {
+            throw new WrappedCommandException(t);
+        }
+    }
+
+    @Override
+    public boolean testPermission(CommandLocals locals) {
+        return permission != null ? (builder.getAuthorizer().testPermission(locals, permission)) : true;
+    }
+
+    @Override
+    public SimpleDescription getDescription() {
+        return description;
+    }
+
+    @Override
+    public String[] getPermissions() {
+        return new String[]{permission};
+    }
+
+    @Override
+    public ParametricBuilder getBuilder() {
+        return builder;
+    }
+
+    @Override
+    public boolean anyFlags() {
+        return anyFlags;
+    }
+
+    @Override
+    public String toString() {
+        return command.aliases()[0];
+    }
+}

core/src/main/java/com/sk89q/worldedit/util/command/parametric/ParameterData.java

@@ -23,9 +23,13 @@ import com.sk89q.worldedit.util.command.SimpleParameter;
 import com.sk89q.worldedit.util.command.binding.PrimitiveBindings;
 import com.sk89q.worldedit.util.command.binding.Range;
 import com.sk89q.worldedit.util.command.binding.Text;
+
+import javax.xml.ws.Provider;
 import java.lang.annotation.Annotation;
 import java.lang.reflect.Method;
 import java.lang.reflect.Type;
+import java.util.concurrent.Callable;
+import java.util.function.Supplier;
 
 /**
  * Describes a parameter in detail.
@@ -155,6 +159,10 @@ public class ParameterData extends SimpleParameter {
      * Validate this parameter and its binding.
      */
     public void validate(Method method, int parameterIndex) throws ParametricException {
+        validate(() -> method.toGenericString(), parameterIndex);
+    }
+
+    public void validate(Supplier<String> method, int parameterIndex) throws ParametricException {
         // We can't have indeterminate consumers without @Switches otherwise
         // it may screw up parameter processing for later bindings
         BindingBehavior behavior = getBinding().getBehavior(this);
@@ -166,7 +174,7 @@ public class ParameterData extends SimpleParameter {
                             getBinding().getClass().getCanonicalName() +
                             "\nmay or may not consume parameters (isIndeterminateConsumer(" + type + ") = true)" +
                             "\nand therefore @Switch(flag) is required for parameter #" + parameterIndex + " of \n" +
-                            method.toGenericString());
+                            method.get());
         }
 
         // getConsumedCount() better return -1 if the BindingBehavior is not CONSUMES
@@ -176,7 +184,7 @@ public class ParameterData extends SimpleParameter {
                             getBinding().getClass().getCanonicalName() +
                             "\neven though its behavior type is " + behavior.name() +
                             "\nfor parameter #" + parameterIndex + " of \n" +
-                            method.toGenericString());
+                            method.get());
         }
 
         // getConsumedCount() should not return 0 if the BindingBehavior is not PROVIDES
@@ -186,7 +194,7 @@ public class ParameterData extends SimpleParameter {
                             getBinding().getClass().getCanonicalName() +
                             "\nwhen its behavior type is " + behavior.name() + " and not PROVIDES " +
                             "\nfor parameter #" + parameterIndex + " of \n" +
-                            method.toGenericString());
+                            method.get());
         }
     }
 

core/src/main/java/com/sk89q/worldedit/util/command/parametric/ParametricCallable.java

@@ -49,7 +49,7 @@ import java.util.Set;
 /**
  * The implementation of a {@link CommandCallable} for the {@link ParametricBuilder}.
  */
-public class ParametricCallable implements CommandCallable {
+public class ParametricCallable extends AParametricCallable {
 
     private final ParametricBuilder builder;
     private final Object object;
@@ -60,6 +60,7 @@ public class ParametricCallable implements CommandCallable {
     private final Set<Character> legacyFlags = new HashSet<Character>();
     private final SimpleDescription description = new SimpleDescription();
     private final CommandPermissions commandPermissions;
+    private final Command definition;
 
     /**
      * Create a new instance.
@@ -179,6 +180,22 @@ public class ParametricCallable implements CommandCallable {
 
         // Get permissions annotation
         commandPermissions = method.getAnnotation(CommandPermissions.class);
+        this.definition = definition;
+    }
+
+    @Override
+    public Command getCommand() {
+        return object.getClass().getAnnotation(Command.class);
+    }
+
+    @Override
+    public Command getDefinition() {
+        return definition;
+    }
+
+    @Override
+    public String getGroup() {
+        return object.getClass().getSimpleName().replaceAll("Commands", "").replaceAll("Util$", "");
     }
 
     @Override
@@ -187,6 +204,7 @@ public class ParametricCallable implements CommandCallable {
         if (!testPermission(locals)) {
             throw new CommandPermissionsException();
         }
+        if (locals.get(CommandCallable.class) == null) locals.put(CommandCallable.class, this);
 
         String calledCommand = parentCommands.length > 0 ? parentCommands[parentCommands.length - 1] : "_";
         String[] split = (calledCommand + " " + stringArguments).split(" ", -1);
@@ -279,94 +297,8 @@ public class ParametricCallable implements CommandCallable {
     }
 
     @Override
-    public List<String> getSuggestions(String arguments, CommandLocals locals) throws CommandException {
+    public ParameterData[] getParameters() {
-        String[] split = ("ignored" + " " + arguments).split(" ", -1);
+        return parameters;
-        CommandContext context = new CommandContext(split, getValueFlags(), !arguments.endsWith(" "), locals);
-        ContextArgumentStack scoped = new ContextArgumentStack(context);
-        SuggestionContext suggestable = context.getSuggestionContext();
-
-
-        // For /command -f |
-        // For /command -f flag|
-        if (suggestable.forFlag()) {
-            for (int i = 0; i < parameters.length; i++) {
-                ParameterData parameter = parameters[i];
-
-                if (parameter.getFlag() == suggestable.getFlag()) {
-                    String prefix = context.getFlag(parameter.getFlag());
-                    if (prefix == null) {
-                        prefix = "";
-                    }
-
-                    return parameter.getBinding().getSuggestions(parameter, prefix);
-                }
-            }
-
-            // This should not happen
-            return new ArrayList<String>();
-        }
-
-        int consumerIndex = 0;
-        ParameterData lastConsumer = null;
-        String lastConsumed = null;
-
-        for (int i = 0; i < parameters.length; i++) {
-            ParameterData parameter = parameters[i];
-            if (parameter.getFlag() != null) {
-                continue; // We already handled flags
-            }
-
-            try {
-                scoped.mark();
-                parameter.getBinding().bind(parameter, scoped, true);
-                if (scoped.wasConsumed()) {
-                    lastConsumer = parameter;
-                    lastConsumed = context.getString(scoped.position() - 1);
-                    consumerIndex++;
-                }
-            } catch (MissingParameterException e) {
-                // For /command value1 |value2
-                // For /command |value1 value2
-                if (suggestable.forHangingValue()) {
-                    return parameter.getBinding().getSuggestions(parameter, "");
-                } else {
-                    // For /command value1| value2
-                    if (lastConsumer != null) {
-                        return lastConsumer.getBinding().getSuggestions(lastConsumer, lastConsumed);
-                        // For /command| value1 value2
-                        // This should never occur
-                    } else {
-                        throw new RuntimeException("Invalid suggestion context");
-                    }
-                }
-            } catch (ParameterException | InvocationTargetException e) {
-                SuggestInputParseException suggestion = SuggestInputParseException.get(e);
-                if (suggestion != null) {
-                    return suggestion.getSuggestions();
-                }
-                if (suggestable.forHangingValue()) {
-                    String name = getDescription().getParameters().get(consumerIndex).getName();
-                    throw new InvalidUsageException("For parameter '" + name + "': " + e.getMessage(), this);
-                } else {
-                    return parameter.getBinding().getSuggestions(parameter, "");
-                }
-            }
-        }
-        // For /command value1 value2 |
-        if (suggestable.forHangingValue()) {
-            // There's nothing that we can suggest because there's no more parameters
-            // to add on, and we can't change the previous parameter
-            return new ArrayList<String>();
-        } else {
-            // For /command value1 value2|
-            if (lastConsumer != null) {
-                return lastConsumer.getBinding().getSuggestions(lastConsumer, lastConsumed);
-                // This should never occur
-            } else {
-                throw new RuntimeException("Invalid suggestion context");
-            }
-
-        }
     }
 
     /**
@@ -378,179 +310,34 @@ public class ParametricCallable implements CommandCallable {
         return valueFlags;
     }
 
+    @Override
+    public Set<Character> getLegacyFlags() {
+        return legacyFlags;
+    }
+
     @Override
     public SimpleDescription getDescription() {
         return description;
     }
 
     @Override
-    public boolean testPermission(CommandLocals locals) {
+    public String[] getPermissions() {
-        if (commandPermissions != null) {
+        return commandPermissions != null ? commandPermissions.value() : new String[0];
-            for (String perm : commandPermissions.value()) {
-                if (builder.getAuthorizer().testPermission(locals, perm)) {
-                    return true;
-                }
     }
 
-            return false;
+    @Override
-        } else {
+    public ParametricBuilder getBuilder() {
-            return true;
+        return builder;
-        }
     }
 
-    /**
+    @Override
-     * Get the right {@link ArgumentStack}.
+    public boolean anyFlags() {
-     *
+        return anyFlags;
-     * @param parameter the parameter
-     * @param existing  the existing scoped context
-     * @return the context to use
-     */
-    public static ArgumentStack getScopedContext(Parameter parameter, ArgumentStack existing) {
-        if (parameter.getFlag() != null) {
-            CommandContext context = existing.getContext();
-
-            if (parameter.isValueFlag()) {
-                return new StringArgumentStack(context, context.getFlag(parameter.getFlag()), false);
-            } else {
-                String v = context.hasFlag(parameter.getFlag()) ? "true" : "false";
-                return new StringArgumentStack(context, v, true);
-            }
     }
 
-        return existing;
+    @Override
-    }
+    public String toString() {
-
+        return method.toGenericString();
-    /**
-     * Get whether a parameter is allowed to consume arguments.
-     *
-     * @param i      the index of the parameter
-     * @param scoped the scoped context
-     * @return true if arguments may be consumed
-     */
-    public boolean mayConsumeArguments(int i, ContextArgumentStack scoped) {
-        CommandContext context = scoped.getContext();
-        ParameterData parameter = parameters[i];
-
-        // Flag parameters: Always consume
-        // Required non-flag parameters: Always consume
-        // Optional non-flag parameters:
-        //     - Before required parameters: Consume if there are 'left over' args
-        //     - At the end: Always consumes
-
-        if (parameter.isOptional()) {
-            if (parameter.getFlag() != null) {
-                return !parameter.isValueFlag() || context.hasFlag(parameter.getFlag());
-            } else {
-                int numberFree = context.argsLength() - scoped.position();
-                for (int j = i; j < parameters.length; j++) {
-                    if (parameters[j].isNonFlagConsumer() && !parameters[j].isOptional()) {
-                        // We already checked if the consumed count was > -1
-                        // when we created this object
-                        numberFree -= parameters[j].getConsumedCount();
-                    }
-                }
-
-                // Skip this optional parameter
-                if (numberFree < 1) {
-                    return false;
-                }
-            }
-        }
-
-        return true;
-    }
-
-    /**
-     * Get the default value for a parameter.
-     *
-     * @param i      the index of the parameter
-     * @param scoped the scoped context
-     * @return a value
-     * @throws ParameterException on an error
-     * @throws CommandException   on an error
-     */
-    public Object getDefaultValue(int i, ContextArgumentStack scoped) throws ParameterException, CommandException, InvocationTargetException {
-        CommandContext context = scoped.getContext();
-        ParameterData parameter = parameters[i];
-
-        String[] defaultValue = parameter.getDefaultValue();
-        if (defaultValue != null) {
-            try {
-                return parameter.getBinding().bind(parameter, new StringArgumentStack(context, defaultValue, false), false);
-            } catch (MissingParameterException e) {
-                throw new ParametricException(
-                        "The default value of the parameter using the binding " +
-                                parameter.getBinding().getClass() + " in the method\n" +
-                                method.toGenericString() + "\nis invalid");
-            }
-        }
-
-        return null;
-    }
-
-
-    /**
-     * Check to see if all arguments, including flag arguments, were consumed.
-     *
-     * @param scoped the argument scope
-     * @throws UnconsumedParameterException thrown if parameters were not consumed
-     */
-    public void checkUnconsumed(ContextArgumentStack scoped) throws UnconsumedParameterException {
-        CommandContext context = scoped.getContext();
-        String unconsumed;
-        String unconsumedFlags = getUnusedFlags(context);
-
-        if ((unconsumed = scoped.getUnconsumed()) != null) {
-            throw new UnconsumedParameterException(unconsumed + " " + unconsumedFlags);
-        }
-
-        if (unconsumedFlags != null) {
-            throw new UnconsumedParameterException(unconsumedFlags);
-        }
-    }
-
-    /**
-     * Get any unused flag arguments.
-     *
-     * @param context the command context
-     */
-    public String getUnusedFlags(CommandContext context) {
-        if (!anyFlags) {
-            Set<Character> unusedFlags = null;
-            for (char flag : context.getFlags()) {
-                boolean found = false;
-
-                if (legacyFlags.contains(flag)) {
-                    break;
-                }
-
-                for (ParameterData parameter : parameters) {
-                    Character paramFlag = parameter.getFlag();
-                    if (paramFlag != null && flag == paramFlag) {
-                        found = true;
-                        break;
-                    }
-                }
-
-                if (!found) {
-                    if (unusedFlags == null) {
-                        unusedFlags = new HashSet<Character>();
-                    }
-                    unusedFlags.add(flag);
-                }
-            }
-
-            if (unusedFlags != null) {
-                StringBuilder builder = new StringBuilder();
-                for (Character flag : unusedFlags) {
-                    builder.append("-").append(flag).append(" ");
-                }
-
-                return builder.toString().trim();
-            }
-        }
-
-        return null;
     }
 
     /**
@@ -573,7 +360,8 @@ public class ParametricCallable implements CommandCallable {
         }
     }
 
-    public static Class<?> inject() {
+
+    public static Class<ParametricCallable> inject() {
         return ParametricCallable.class;
     }
 }

core/src/main/java/com/sk89q/worldedit/util/command/parametric/StringArgumentStack.java

@@ -146,7 +146,7 @@ public class StringArgumentStack implements ArgumentStack {
      */
     @Override
     public String reset() {
-        String value = context.getString(markedIndex, index - 1);
+        String value = (index - 1 > markedIndex) ? context.getString(markedIndex, index - 1) : "";
         index = markedIndex;
         return value;
     }

core/src/main/resources/cs_adv.js

@@ -0,0 +1,51 @@
+{
+    var STRIP_COMMENTS = /((\/\/.*$)|(\/\*[\s\S]*?\*\/))/mg;
+    var ARGUMENT_NAMES = /([^\s,]+)/g;
+    function getParamNames(func) {
+      var a = func.toString().replace(STRIP_COMMENTS, '');
+      var r = a.slice(a.indexOf('(')+1, a.indexOf(')')).match(ARGUMENT_NAMES);
+      var l = new java.util.ArrayList();
+      if(r !== null) {
+          for (var i = 0; i < r.length; i++) {
+              l.add(r[i]);
+          }
+      }
+      return l;
+    }
+
+    function getAllFunctions(){
+      var a = new java.util.ArrayList();
+      for (var f in this){
+        if (this.hasOwnProperty(f) && this[f] instanceof Function && !/a/i.test(f)){
+          a.add(this[f]);
+        }
+      }
+      return a;
+    }
+
+    var functions = getAllFunctions();
+    var commands = new java.util.ArrayList()
+    for (var i = 0; i < functions.length; i++) {
+        var f = functions[i];
+        if (f.hasOwnProperty('desc'))
+        {
+            if (!f.hasOwnProperty('permission')) f.permission = "fawe.use";
+            if (!f.hasOwnProperty('aliases')) f.aliases = [f.name];
+            if (!f.hasOwnProperty('queued')) f.queued = true;
+            var cmd = com.boydti.fawe.config.Commands.fromArgs(f.aliases, f.usage, f.desc, f.min, f.max, f.flags, f.help, f.queued);
+            var man = com.sk89q.worldedit.extension.platform.CommandManager.getInstance();
+            var builder = man.getBuilder();
+            var args = getParamNames(f);
+
+            var wrap = Java.extend(java.util.function.Function, {
+                apply: function(a) {
+                    return f.apply(null, a);
+                }
+            });
+            var w2 = new wrap();
+            var callable = new com.sk89q.worldedit.util.command.parametric.FunctionParametricCallable(builder, "", cmd, f.permission, args, w2);
+            commands.add(callable);
+        }
+    }
+    commands;
+}