Subcommand aliases

args4j/src/org/kohsuke/args4j/spi/SubCommand.java

@@ -17,6 +17,11 @@
      */
     String name();
 
+    /**
+     * Aliases for the command.
+     */
+    String[] aliases() default { };
+
     /**
      * The implementation class of this sub command.
      *

args4j/src/org/kohsuke/args4j/spi/SubCommandHandler.java

@@ -7,6 +7,7 @@
 import org.kohsuke.args4j.OptionDef;
 
 import java.util.AbstractList;
+import java.util.Arrays;
 import java.util.ResourceBundle;
 
 /**
@@ -98,7 +99,7 @@ public int parseArguments(Parameters params) throws CmdLineException {
         String subCmd = params.getParameter(0);
 
         for (SubCommand c : commands.value()) {
-            if (c.name().equals(subCmd)) {
+            if (c.name().equals(subCmd) || Arrays.asList(c.aliases()).contains(subCmd)) {
                 setter.addValue(subCommand(c,params));
                 return params.size();   // consume all the remaining tokens
             }

args4j/test/org/kohsuke/args4j/SubCommandTest.java

@@ -13,7 +13,7 @@ public static class Foo {
         @Argument(handler= SubCommandHandler.class)
         @SubCommands({
                 @SubCommand(name="cmd1",impl=Cmd1.class),
-                @SubCommand(name="cmd2",impl=Cmd2.class)
+                @SubCommand(name="cmd2", aliases = {"c2a", "c2b", "c2c"}, impl=Cmd2.class)
         })
         SubCmd value;
 
@@ -46,5 +46,10 @@ public void testCmd2() throws Exception {
         parser.parseArgument("cmd2");
         assertTrue(testObject.value instanceof Cmd2);
     }
+
+    public void testCmd2Alias() throws Exception {
+        parser.parseArgument("c2c");
+        assertTrue(testObject.value instanceof Cmd2);
+    }
 }