context.lookup.lookupMap(ShellCommandRegistryFactory.class);
        for (Map.Entry<String, ShellCommandRegistryFactory> entry : factories.entrySet()) {
            holder.addCommandRegistry(entry.getValue().createShellCommandRegistry(context));
        }

        DefaultParser parser = new DefaultParser();
        parser.setRegexCommand("[:]{0,1}[a-zA-Z!]{1,}\\S*"); // change default regex to support shell commands

import static java.util.Objects.requireNonNull;

@Named("builtin")
@Singleton
public class BuiltinShellCommandRegistryFactory implements ShellCommandRegistryFactory {
    @Override
    public CommandRegistry createShellCommandRegistry(LookupContext context) {
        return new BuiltinShellCommandRegistry(context);
    }

    private static class BuiltinShellCommandRegistry extends JlineCommandRegistry implements AutoCloseable {