Some command refactoring. Switch usages of page args to -p flag.

worldedit-core/src/main/java/com/sk89q/worldedit/command/BiomeCommands.java

@@ -26,7 +26,9 @@ import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.command.util.CommandPermissions;
 import com.sk89q.worldedit.command.util.CommandPermissionsConditionGenerator;
 import com.sk89q.worldedit.command.util.Logging;
+import com.sk89q.worldedit.command.util.WorldEditAsyncCommandBuilder;
 import com.sk89q.worldedit.entity.Player;
+import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.extension.platform.Capability;
 import com.sk89q.worldedit.function.FlatRegionFunction;
 import com.sk89q.worldedit.function.FlatRegionMaskingFilter;
@@ -50,10 +52,10 @@ import com.sk89q.worldedit.world.registry.BiomeRegistry;
 import org.enginehub.piston.annotation.Command;
 import org.enginehub.piston.annotation.CommandContainer;
 import org.enginehub.piston.annotation.param.Arg;
+import org.enginehub.piston.annotation.param.ArgFlag;
 import org.enginehub.piston.annotation.param.Switch;
 
 import java.util.HashSet;
-import java.util.Objects;
 import java.util.Set;
 import java.util.stream.Collectors;
 
@@ -77,17 +79,28 @@ public class BiomeCommands {
         desc = "Gets all biomes available."
     )
     @CommandPermissions("worldedit.biome.list")
-    public void biomeList(Player player,
+    public void biomeList(Actor actor,
-                          @Arg(desc = "Page number.", def = "1")
+                          @ArgFlag(name = 'p', desc = "Page number.", def = "1")
-                              int page) throws WorldEditException {
+                              int page) {
-        BiomeRegistry biomeRegistry = WorldEdit.getInstance().getPlatformManager()
+        WorldEditAsyncCommandBuilder.createAndSendMessage(actor, () -> {
-                .queryCapability(Capability.GAME_HOOKS).getRegistries().getBiomeRegistry();
+            BiomeRegistry biomeRegistry = WorldEdit.getInstance().getPlatformManager()
+                    .queryCapability(Capability.GAME_HOOKS).getRegistries().getBiomeRegistry();
 
-        PaginationBox paginationBox = PaginationBox.fromStrings("Available Biomes", "/biomelist %page%",
+            PaginationBox paginationBox = PaginationBox.fromStrings("Available Biomes", "/biomelist -p %page%",
-                BiomeType.REGISTRY.values().stream()
+                    BiomeType.REGISTRY.values().stream()
-                        .map(biomeRegistry::getData).filter(Objects::nonNull)
+                            .map(biomeType -> {
-                        .map(BiomeData::getName).collect(Collectors.toList()));
+                                String id = biomeType.getId();
-        player.print(paginationBox.create(page));
+                                final BiomeData data = biomeRegistry.getData(biomeType);
+                                if (data != null) {
+                                    String name = data.getName();
+                                    return id + " (" + name + ")";
+                                } else {
+                                    return id;
+                                }
+                            })
+                            .collect(Collectors.toList()));
+             return paginationBox.create(page);
+        }, null);
     }
 
     @Command(

worldedit-core/src/main/java/com/sk89q/worldedit/command/BrushCommands.java

@@ -90,7 +90,7 @@ public class BrushCommands {
     @CommandPermissions("worldedit.brush.sphere")
     public void sphereBrush(Player player, LocalSession session,
                             @Arg(desc = "The pattern of blocks to set")
-                                Pattern fill,
+                                Pattern pattern,
                             @Arg(desc = "The radius of the sphere", def = "2")
                                 double radius,
                             @Switch(name = 'h', desc = "Create hollow spheres instead")
@@ -98,7 +98,7 @@ public class BrushCommands {
         worldEdit.checkMaxBrushRadius(radius);
 
         BrushTool tool = session.getBrushTool(player.getItemInHand(HandSide.MAIN_HAND).getType());
-        tool.setFill(fill);
+        tool.setFill(pattern);
         tool.setSize(radius);
 
         if (hollow) {
@@ -118,7 +118,7 @@ public class BrushCommands {
     @CommandPermissions("worldedit.brush.cylinder")
     public void cylinderBrush(Player player, LocalSession session,
                               @Arg(desc = "The pattern of blocks to set")
-                                  Pattern fill,
+                                  Pattern pattern,
                               @Arg(desc = "The radius of the cylinder", def = "2")
                                   double radius,
                               @Arg(desc = "The height of the cylinder", def = "1")
@@ -129,7 +129,7 @@ public class BrushCommands {
         worldEdit.checkMaxBrushRadius(height);
 
         BrushTool tool = session.getBrushTool(player.getItemInHand(HandSide.MAIN_HAND).getType());
-        tool.setFill(fill);
+        tool.setFill(pattern);
         tool.setSize(radius);
 
         if (hollow) {

worldedit-core/src/main/java/com/sk89q/worldedit/command/ChunkCommands.java

@@ -39,6 +39,7 @@ import com.sk89q.worldedit.world.storage.McRegionChunkStore;
 import org.enginehub.piston.annotation.Command;
 import org.enginehub.piston.annotation.CommandContainer;
 import org.enginehub.piston.annotation.param.Arg;
+import org.enginehub.piston.annotation.param.ArgFlag;
 
 import java.io.FileOutputStream;
 import java.io.IOException;
@@ -86,10 +87,10 @@ public class ChunkCommands {
     )
     @CommandPermissions("worldedit.listchunks")
     public void listChunks(Player player, LocalSession session,
-            @Arg(desc = "Page number.", def = "1") int page) throws WorldEditException {
+            @ArgFlag(name = 'p', desc = "Page number.", def = "1") int page) throws WorldEditException {
         Set<BlockVector2> chunks = session.getSelection(player.getWorld()).getChunks();
 
-        PaginationBox paginationBox = PaginationBox.fromStrings("Selected Chunks", "/listchunks %page%",
+        PaginationBox paginationBox = PaginationBox.fromStrings("Selected Chunks", "/listchunks -p %page%",
                 chunks.stream().map(BlockVector2::toString).collect(Collectors.toList()));
         player.print(paginationBox.create(page));
     }

worldedit-core/src/main/java/com/sk89q/worldedit/command/GeneralCommands.java

@@ -19,25 +19,35 @@
 
 package com.sk89q.worldedit.command;
 
-import com.google.common.collect.Sets;
 import com.sk89q.worldedit.EditSession;
 import com.sk89q.worldedit.LocalConfiguration;
 import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.WorldEditException;
+import com.sk89q.worldedit.command.util.AsyncCommandBuilder;
 import com.sk89q.worldedit.command.util.CommandPermissions;
 import com.sk89q.worldedit.command.util.CommandPermissionsConditionGenerator;
+import com.sk89q.worldedit.command.util.WorldEditAsyncCommandBuilder;
 import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.extension.input.DisallowedUsageException;
 import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.function.mask.Mask;
+import com.sk89q.worldedit.util.formatting.component.PaginationBox;
+import com.sk89q.worldedit.util.formatting.text.Component;
 import com.sk89q.worldedit.world.item.ItemType;
-import com.sk89q.worldedit.world.item.ItemTypes;
 import org.enginehub.piston.annotation.Command;
 import org.enginehub.piston.annotation.CommandContainer;
 import org.enginehub.piston.annotation.param.Arg;
+import org.enginehub.piston.annotation.param.ArgFlag;
 import org.enginehub.piston.annotation.param.Switch;
 
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Locale;
+import java.util.Map;
+import java.util.TreeMap;
+import java.util.concurrent.Callable;
+
 import static com.google.common.base.Preconditions.checkNotNull;
 
 /**
@@ -65,7 +75,7 @@ public class GeneralCommands {
     @CommandPermissions("worldedit.limit")
     public void limit(Player player, LocalSession session,
                       @Arg(desc = "The limit to set", def = "")
-                          Integer limit) throws WorldEditException {
+                          Integer limit) {
 
         LocalConfiguration config = worldEdit.getConfiguration();
         boolean mayDisable = player.hasPermission("worldedit.limit.unrestricted");
@@ -79,12 +89,8 @@ public class GeneralCommands {
         }
 
         session.setBlockChangeLimit(limit);
-
+        player.print("Block change limit set to " + limit + "."
-        if (limit != config.defaultChangeLimit) {
+                + (limit == config.defaultChangeLimit ? "" : " (Use //limit to go back to the default.)"));
-            player.print("Block change limit set to " + limit + ". (Use //limit to go back to the default.)");
-        } else {
-            player.print("Block change limit set to " + limit + ".");
-        }
     }
 
     @Command(
@@ -94,8 +100,7 @@ public class GeneralCommands {
     @CommandPermissions("worldedit.timeout")
     public void timeout(Player player, LocalSession session,
                         @Arg(desc = "The timeout time to set", def = "")
-                            Integer limit) throws WorldEditException {
+                            Integer limit) {
-
         LocalConfiguration config = worldEdit.getConfiguration();
         boolean mayDisable = player.hasPermission("worldedit.timeout.unrestricted");
 
@@ -108,12 +113,8 @@ public class GeneralCommands {
         }
 
         session.setTimeout(limit);
-
+        player.print("Timeout time set to " + limit + " ms."
-        if (limit != config.calculationTimeout) {
+                + (limit == config.calculationTimeout ? "" : " (Use //timeout to go back to the default.)"));
-            player.print("Timeout time set to " + limit + " ms. (Use //timeout to go back to the default.)");
-        } else {
-            player.print("Timeout time set to " + limit + " ms.");
-        }
     }
 
     @Command(
@@ -123,7 +124,7 @@ public class GeneralCommands {
     @CommandPermissions("worldedit.fast")
     public void fast(Player player, LocalSession session,
                      @Arg(desc = "The new fast mode state", def = "")
-                        Boolean fastMode) throws WorldEditException {
+                        Boolean fastMode) {
         boolean hasFastMode = session.hasFastMode();
         if (fastMode != null && fastMode == hasFastMode) {
             player.printError("Fast mode already " + (fastMode ? "enabled" : "disabled") + ".");
@@ -146,7 +147,7 @@ public class GeneralCommands {
     @CommandPermissions("worldedit.reorder")
     public void reorderMode(Player player, LocalSession session,
                             @Arg(desc = "The reorder mode", def = "")
-                                EditSession.ReorderMode reorderMode) throws WorldEditException {
+                                EditSession.ReorderMode reorderMode) {
         if (reorderMode == null) {
             player.print("The reorder mode is " + session.getReorderMode().getDisplayName());
         } else {
@@ -190,9 +191,9 @@ public class GeneralCommands {
     @CommandPermissions("worldedit.global-mask")
     public void gmask(Player player, LocalSession session,
                       @Arg(desc = "The mask to set", def = "")
-                          Mask mask) throws WorldEditException {
+                          Mask mask) {
         if (mask == null) {
-            session.setMask((Mask) null);
+            session.setMask(null);
             player.print("Global mask disabled.");
         } else {
             session.setMask(mask);
@@ -205,8 +206,7 @@ public class GeneralCommands {
         aliases = {"/toggleplace"},
         desc = "Switch between your position and pos1 for placement"
     )
-    public void togglePlace(Player player, LocalSession session) throws WorldEditException {
+    public void togglePlace(Player player, LocalSession session) {
-
         if (session.togglePlacementPosition()) {
             player.print("Now placing at pos #1.");
         } else {
@@ -220,41 +220,48 @@ public class GeneralCommands {
         desc = "Search for an item"
     )
     public void searchItem(Actor actor,
-                           @Arg(desc = "Item query")
+                           @Arg(desc = "Search query", variable = true)
-                               String query,
+                               List<String> query,
                            @Switch(name = 'b', desc = "Only search for blocks")
                                boolean blocksOnly,
                            @Switch(name = 'i', desc = "Only search for items")
-                               boolean itemsOnly) throws WorldEditException {
+                               boolean itemsOnly,
-        ItemType type = ItemTypes.get(query);
+                           @ArgFlag(name = 'p', desc = "Page of results to return", def = "1")
+                               int page) {
+        String search = String.join(" ", query);
+        if (search.length() <= 2) {
+            actor.printError("Enter a longer search string (len > 2).");
+            return;
+        }
+        if (blocksOnly && itemsOnly) {
+            actor.printError("You cannot use both the 'b' and 'i' flags simultaneously.");
+            return;
+        }
 
-        if (type != null) {
+        WorldEditAsyncCommandBuilder.createAndSendMessage(actor, new ItemSearcher(search, blocksOnly, itemsOnly, page),
-            actor.print(type.getId() + " (" + type.getName() + ")");
+                "(Please wait... searching items.)");
-        } else {
+    }
-            if (query.length() <= 2) {
-                actor.printError("Enter a longer search string (len > 2).");
-                return;
-            }
 
-            if (!blocksOnly && !itemsOnly) {
+    private static class ItemSearcher implements Callable<Component> {
-                actor.print("Searching for: " + query);
+        private final boolean blocksOnly;
-            } else if (blocksOnly && itemsOnly) {
+        private final boolean itemsOnly;
-                actor.printError("You cannot use both the 'b' and 'i' flags simultaneously.");
+        private final String search;
-                return;
+        private final int page;
-            } else if (blocksOnly) {
-                actor.print("Searching for blocks: " + query);
-            } else {
-                actor.print("Searching for items: " + query);
-            }
 
-            int found = 0;
+        ItemSearcher(String search, boolean blocksOnly, boolean itemsOnly, int page) {
+            this.blocksOnly = blocksOnly;
+            this.itemsOnly = itemsOnly;
+            this.search = search;
+            this.page = page;
+        }
 
+        @Override
+        public Component call() throws Exception {
+            String command = "/searchitem " + (blocksOnly ? "-b " : "") + (itemsOnly ? "-i " : "") + "-p %page% " + search;
+            Map<String, String> results = new TreeMap<>();
+            String idMatch = search.replace(' ', '_');
+            String nameMatch = search.toLowerCase(Locale.ROOT);
             for (ItemType searchType : ItemType.REGISTRY) {
-                if (found >= 15) {
-                    actor.print("Too many results!");
-                    break;
-                }
-
                 if (blocksOnly && !searchType.hasBlockType()) {
                     continue;
                 }
@@ -262,20 +269,16 @@ public class GeneralCommands {
                 if (itemsOnly && searchType.hasBlockType()) {
                     continue;
                 }
-
+                final String id = searchType.getId();
-                for (String alias : Sets.newHashSet(searchType.getId(), searchType.getName())) {
+                String name = searchType.getName();
-                    if (alias.contains(query)) {
+                final boolean hasName = !name.equals(id);
-                        actor.print(searchType.getId() + " (" + searchType.getName() + ")");
+                name = name.toLowerCase(Locale.ROOT);
-                        ++found;
+                if (id.contains(idMatch) || (hasName && name.contains(nameMatch))) {
-                        break;
+                    results.put(id, name + (hasName ? " (" + id + ")" : ""));
-                    }
                 }
             }
-
+            List<String> list = new ArrayList<>(results.values());
-            if (found == 0) {
+            return PaginationBox.fromStrings("Search results for '" + search + "'", command, list).create(page);
-                actor.printError("No items found.");
-            }
         }
     }
-
 }

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

@@ -26,6 +26,7 @@ import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.command.util.AsyncCommandBuilder;
 import com.sk89q.worldedit.command.util.CommandPermissions;
 import com.sk89q.worldedit.command.util.CommandPermissionsConditionGenerator;
+import com.sk89q.worldedit.command.util.WorldEditAsyncCommandBuilder;
 import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.extent.clipboard.BlockArrayClipboard;
@@ -39,8 +40,10 @@ import com.sk89q.worldedit.function.operation.Operations;
 import com.sk89q.worldedit.math.transform.Transform;
 import com.sk89q.worldedit.session.ClipboardHolder;
 import com.sk89q.worldedit.util.formatting.component.CodeFormat;
+import com.sk89q.worldedit.util.formatting.component.ErrorFormat;
 import com.sk89q.worldedit.util.formatting.component.PaginationBox;
 import com.sk89q.worldedit.util.formatting.component.SchematicPaginationBox;
+import com.sk89q.worldedit.util.formatting.text.Component;
 import com.sk89q.worldedit.util.formatting.text.TextComponent;
 import com.sk89q.worldedit.util.formatting.text.event.ClickEvent;
 import com.sk89q.worldedit.util.formatting.text.format.TextColor;
@@ -124,7 +127,7 @@ public class SchematicCommands {
                 .sendMessageAfterDelay("(Please wait... loading schematic.)")
                 .onSuccess(TextComponent.of(filename, TextColor.GOLD)
                                 .append(TextComponent.of(" loaded. Paste it with ", TextColor.LIGHT_PURPLE))
-                                .append(CodeFormat.wrap("//paste").clickEvent(ClickEvent.of(ClickEvent.Action.RUN_COMMAND, "//paste"))),
+                                .append(CodeFormat.wrap("//paste").clickEvent(ClickEvent.of(ClickEvent.Action.SUGGEST_COMMAND, "//paste"))),
                         session::setClipboard)
                 .onFailure("Failed to load schematic", worldEdit.getPlatformManager().getPlatformCommandManager().getExceptionConverter())
                 .buildAndExec(worldEdit.getExecutorService());
@@ -257,59 +260,17 @@ public class SchematicCommands {
                      @Switch(name = 'd', desc = "Sort by date, oldest first")
                          boolean oldFirst,
                      @Switch(name = 'n', desc = "Sort by date, newest first")
-                         boolean newFirst) throws WorldEditException {
+                         boolean newFirst) {
         if (oldFirst && newFirst) {
             throw new StopExecutionException(TextComponent.of("Cannot sort by oldest and newest."));
         }
-        File dir = worldEdit.getWorkingDirectoryFile(worldEdit.getConfiguration().saveDir);
+        final String saveDir = worldEdit.getConfiguration().saveDir;
-        List<File> fileList = allFiles(dir);
-
-        if (fileList == null || fileList.isEmpty()) {
-            actor.printError("No schematics found.");
-            return;
-        }
-
-        File[] files = new File[fileList.size()];
-        fileList.toArray(files);
-
         final int sortType = oldFirst ? -1 : newFirst ? 1 : 0;
-        // cleanup file list
+        final String pageCommand = actor.isPlayer()
-        Arrays.sort(files, (f1, f2) -> {
+                ? "//schem list -p %page%" + (sortType == -1 ? " -d" : sortType == 1 ? " -n" : "") : null;
-            // http://stackoverflow.com/questions/203030/best-way-to-list-files-in-java-sorted-by-date-modified
-            int res;
-            if (sortType == 0) { // use name by default
-                int p = f1.getParent().compareTo(f2.getParent());
-                if (p == 0) { // same parent, compare names
-                    res = f1.getName().compareTo(f2.getName());
-                } else { // different parent, sort by that
-                    res = p;
-                }
-            } else {
-                res = Long.compare(f1.lastModified(), f2.lastModified()); // use date if there is a flag
-                if (sortType == 1) res = -res; // flip date for newest first instead of oldest first
-            }
-            return res;
-        });
 
-        String pageCommand = actor.isPlayer() ? "//schem list -p %page%" + (oldFirst ? " -d" : newFirst ? " -n" : "") : null;
+        WorldEditAsyncCommandBuilder.createAndSendMessage(actor,
-        PaginationBox paginationBox = new SchematicPaginationBox(worldEdit.getConfiguration().saveDir, files, pageCommand);
+                new SchematicListTask(saveDir, sortType, page, pageCommand), "(Please wait... gathering schematic list.)");
-        actor.print(paginationBox.create(page));
-    }
-
-    private List<File> allFiles(File root) {
-        File[] files = root.listFiles();
-        if (files == null) return null;
-        List<File> fileList = new ArrayList<>();
-        for (File f : files) {
-            if (f.isDirectory()) {
-                List<File> subFiles = allFiles(f);
-                if (subFiles == null) continue; // empty subdir
-                fileList.addAll(subFiles);
-            } else {
-                fileList.add(f);
-            }
-        }
-        return fileList;
     }
 
     private static class SchematicLoadTask implements Callable<ClipboardHolder> {
@@ -379,4 +340,68 @@ public class SchematicCommands {
             return null;
         }
     }
+
+    private static class SchematicListTask implements Callable<Component> {
+        private final String prefix;
+        private final int sortType;
+        private final int page;
+        private final File rootDir;
+        private final String pageCommand;
+
+        SchematicListTask(String prefix, int sortType, int page, String pageCommand) {
+            this.prefix = prefix;
+            this.sortType = sortType;
+            this.page = page;
+            this.rootDir = WorldEdit.getInstance().getWorkingDirectoryFile(prefix);
+            this.pageCommand = pageCommand;
+        }
+
+        @Override
+        public Component call() throws Exception {
+            List<File> fileList = allFiles(rootDir);
+
+            if (fileList == null || fileList.isEmpty()) {
+                return ErrorFormat.wrap("No schematics found.");
+            }
+
+            File[] files = new File[fileList.size()];
+            fileList.toArray(files);
+            // cleanup file list
+            Arrays.sort(files, (f1, f2) -> {
+                // http://stackoverflow.com/questions/203030/best-way-to-list-files-in-java-sorted-by-date-modified
+                int res;
+                if (sortType == 0) { // use name by default
+                    int p = f1.getParent().compareTo(f2.getParent());
+                    if (p == 0) { // same parent, compare names
+                        res = f1.getName().compareTo(f2.getName());
+                    } else { // different parent, sort by that
+                        res = p;
+                    }
+                } else {
+                    res = Long.compare(f1.lastModified(), f2.lastModified()); // use date if there is a flag
+                    if (sortType == 1) res = -res; // flip date for newest first instead of oldest first
+                }
+                return res;
+            });
+
+            PaginationBox paginationBox = new SchematicPaginationBox(prefix, files, pageCommand);
+            return paginationBox.create(page);
+        }
+    }
+
+    private static List<File> allFiles(File root) {
+        File[] files = root.listFiles();
+        if (files == null) return null;
+        List<File> fileList = new ArrayList<>();
+        for (File f : files) {
+            if (f.isDirectory()) {
+                List<File> subFiles = allFiles(f);
+                if (subFiles == null) continue; // empty subdir
+                fileList.addAll(subFiles);
+            } else {
+                fileList.add(f);
+            }
+        }
+        return fileList;
+    }
 }

worldedit-core/src/main/java/com/sk89q/worldedit/command/UtilityCommands.java

@@ -61,6 +61,7 @@ import com.sk89q.worldedit.world.block.BlockTypes;
 import org.enginehub.piston.annotation.Command;
 import org.enginehub.piston.annotation.CommandContainer;
 import org.enginehub.piston.annotation.param.Arg;
+import org.enginehub.piston.annotation.param.ArgFlag;
 import org.enginehub.piston.annotation.param.Switch;
 
 import java.text.DecimalFormat;
@@ -517,7 +518,7 @@ public class UtilityCommands {
     public void help(Actor actor,
                      @Switch(name = 's', desc = "List sub-commands of the given command, if applicable")
                          boolean listSubCommands,
-                     @Arg(desc = "The page to retrieve", def = "1")
+                     @ArgFlag(name = 'p', desc = "The page to retrieve", def = "1")
                          int page,
                      @Arg(desc = "The command to retrieve help for", def = "", variable = true)
                          List<String> command) throws WorldEditException {

worldedit-core/src/main/java/com/sk89q/worldedit/command/WorldEditCommands.java

@@ -39,6 +39,7 @@ import com.sk89q.worldedit.util.report.SystemInfoReport;
 import org.enginehub.piston.annotation.Command;
 import org.enginehub.piston.annotation.CommandContainer;
 import org.enginehub.piston.annotation.param.Arg;
+import org.enginehub.piston.annotation.param.ArgFlag;
 import org.enginehub.piston.annotation.param.Switch;
 
 import java.io.File;
@@ -159,7 +160,7 @@ public class WorldEditCommands {
     public void help(Actor actor,
                      @Switch(name = 's', desc = "List sub-commands of the given command, if applicable")
                          boolean listSubCommands,
-                     @Arg(desc = "The page to retrieve", def = "1")
+                     @ArgFlag(name = 'p', desc = "The page to retrieve", def = "1")
                          int page,
                      @Arg(desc = "The command to retrieve help for", def = "", variable = true)
                          List<String> command) throws WorldEditException {

worldedit-core/src/main/java/com/sk89q/worldedit/command/util/CommandPermissionsConditionGenerator.java

@@ -22,7 +22,6 @@ package com.sk89q.worldedit.command.util;
 import com.google.common.collect.ImmutableSet;
 import org.enginehub.piston.Command;
 import org.enginehub.piston.gen.CommandConditionGenerator;
-import org.enginehub.piston.gen.CommandRegistration;
 import org.enginehub.piston.util.NonnullByDefault;
 
 import java.lang.reflect.Method;

worldedit-core/src/main/java/com/sk89q/worldedit/command/util/PrintCommandHelp.java

@@ -135,7 +135,7 @@ public class PrintCommandHelp {
         String used = commandList.isEmpty() ? null : toCommandString(commandList);
         CommandListBox box = new CommandListBox(
                 (used == null ? "Help" : "Subcommands: " + used),
-                "//help -s %page%" + (used == null ? "" : " " + used));
+                "//help -s -p %page%" + (used == null ? "" : " " + used));
         if (!actor.isPlayer()) {
             box.formatForConsole();
         }

worldedit-core/src/main/java/com/sk89q/worldedit/command/util/WorldEditAsyncCommandBuilder.java

@@ -0,0 +1,27 @@
+package com.sk89q.worldedit.command.util;
+
+import com.sk89q.worldedit.WorldEdit;
+import com.sk89q.worldedit.extension.platform.Actor;
+import com.sk89q.worldedit.util.formatting.text.Component;
+
+import javax.annotation.Nullable;
+import java.util.concurrent.Callable;
+
+/**
+ * For internal WorldEdit use only.
+ */
+public final class WorldEditAsyncCommandBuilder {
+    private WorldEditAsyncCommandBuilder() {
+    }
+
+    public static void createAndSendMessage(Actor actor, Callable<Component> task, @Nullable String desc) {
+        final AsyncCommandBuilder<Component> builder = AsyncCommandBuilder.wrap(task, actor);
+        if (desc != null) {
+            builder.sendMessageAfterDelay(desc);
+        }
+        builder
+                .onSuccess((String) null, actor::print)
+                .onFailure((String) null, WorldEdit.getInstance().getPlatformManager().getPlatformCommandManager().getExceptionConverter())
+                .buildAndExec(WorldEdit.getInstance().getExecutorService());
+    }
+}

worldedit-core/src/main/java/com/sk89q/worldedit/extension/platform/PlatformCommandManager.java

@@ -101,7 +101,6 @@ import com.sk89q.worldedit.util.formatting.text.format.TextColor;
 import com.sk89q.worldedit.util.logging.DynamicStreamHandler;
 import com.sk89q.worldedit.util.logging.LogFormat;
 import com.sk89q.worldedit.world.World;
-import org.enginehub.piston.ColorConfig;
 import org.enginehub.piston.Command;
 import org.enginehub.piston.CommandManager;
 import org.enginehub.piston.TextConfig;
@@ -477,6 +476,8 @@ public final class PlatformCommandManager {
         } catch (ConditionFailedException e) {
             if (e.getCondition() instanceof PermissionCondition) {
                 actor.printError("You are not permitted to do that. Are you in the right mode?");
+            } else {
+                actor.print(e.getRichMessage());
             }
         } catch (UsageException e) {
             actor.print(TextComponent.builder("")
@@ -487,7 +488,6 @@ public final class PlatformCommandManager {
             if (!cmd.isEmpty()) {
                 actor.print(TextComponent.builder("Usage: ")
                     .color(TextColor.RED)
-                    .append(TextComponent.of("/", ColorConfig.getMainText()))
                     .append(HelpGenerator.create(e.getCommandParseResult()).getUsage())
                     .build());
             }

worldedit-core/src/main/java/com/sk89q/worldedit/internal/command/CommandRegistrationHandler.java

@@ -20,15 +20,12 @@
 package com.sk89q.worldedit.internal.command;
 
 import com.google.common.collect.ImmutableList;
-import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.command.util.CommandPermissionsConditionGenerator;
-import com.sk89q.worldedit.internal.command.CommandLoggingHandler;
 import org.enginehub.piston.CommandManager;
 import org.enginehub.piston.gen.CommandCallListener;
 import org.enginehub.piston.gen.CommandRegistration;
 
 import java.util.List;
-import java.util.logging.Logger;
 
 public class CommandRegistrationHandler {
 

worldedit-core/src/main/java/com/sk89q/worldedit/world/item/ItemType.java

@@ -33,6 +33,7 @@ public class ItemType implements Keyed {
     public static final NamespacedRegistry<ItemType> REGISTRY = new NamespacedRegistry<>("item type");
 
     private String id;
+    private String name;
 
     public ItemType(String id) {
         // If it has no namespace, assume minecraft.
@@ -53,12 +54,14 @@ public class ItemType implements Keyed {
      * @return The name, or ID
      */
     public String getName() {
-        String name = WorldEdit.getInstance().getPlatformManager().queryCapability(Capability.GAME_HOOKS).getRegistries().getItemRegistry().getName(this);
         if (name == null) {
-            return getId();
+            name = WorldEdit.getInstance().getPlatformManager().queryCapability(Capability.GAME_HOOKS).getRegistries()
-        } else {
+                    .getItemRegistry().getName(this);
-            return name;
+            if (name == null) {
+                name = "";
+            }
         }
+        return name.isEmpty() ? getId() : name;
     }