From e85af0ea91458146870feaa59f3dbad8134e0c9f Mon Sep 17 00:00:00 2001
From: mattirn <matti.rintanikkola@gmail.com>
Date: Sat, 7 Dec 2019 09:07:19 +0100
Subject: [PATCH] CommandRegistry: added two static helper methods, #480

---
 .../org/jline/builtins/CommandRegistry.java   | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/builtins/src/main/java/org/jline/builtins/CommandRegistry.java b/builtins/src/main/java/org/jline/builtins/CommandRegistry.java
index df53cc092..c430cbcc7 100644
--- a/builtins/src/main/java/org/jline/builtins/CommandRegistry.java
+++ b/builtins/src/main/java/org/jline/builtins/CommandRegistry.java
@@ -17,6 +17,28 @@
 
 public interface CommandRegistry {
 
+    /**
+     * Aggregate SystemCompleters of commandRegisteries
+     * @return uncompiled SystemCompleter
+     */
+    static Completers.SystemCompleter aggregateCompleters(CommandRegistry ... commandRegistries) {
+        Completers.SystemCompleter out = new Completers.SystemCompleter();
+        for (CommandRegistry r: commandRegistries) {
+            out.add(r.compileCompleters());
+        }
+        return out;
+    }
+
+    /**
+     * Aggregate and compile SystemCompleters of commandRegisteries
+     * @return compiled SystemCompleter
+     */
+    static Completers.SystemCompleter compileCompleters(CommandRegistry ... commandRegistries) {
+        Completers.SystemCompleter out = aggregateCompleters(commandRegistries);
+        out.compile();
+        return out;
+    }
+
     /**
      * Returns the command names known by this registry.
      * @return the set of known command names, excluding aliases