Actually the previous commit lied; you CAN use the hider trick to have a class be invisible to most autocomplete dialogs and yet still work as an SPI provider; SPI lines are binary names (with dollars for inner classes), that's all. Name fixed and previous commit reverted.

build.xml

@@ -195,7 +195,7 @@ the common tasks and can be called on to run the main aspects of all the sub-scr
 		</ivy:compile>
 		<mkdir dir="build/lombok/META-INF" />
 		<mkdir dir="build/lombok/META-INF/services" />
-		<echo file="build/lombok/META-INF/services/javax.annotation.processing.Processor">lombok.launch._ShadowLaunchingAnnotationProcessor</echo>
+		<echo file="build/lombok/META-INF/services/javax.annotation.processing.Processor">lombok.launch.AnnotationProcessorHider$AnnotationProcessor</echo>
 	</target>
 	
 	<target name="dist" description="Builds THE lombok.jar file which contains everything." depends="version, compile">

src/launch/lombok/launch/AnnotationProcessor.java

@@ -33,43 +33,45 @@ import javax.lang.model.element.Element;
 import javax.lang.model.element.ExecutableElement;
 import javax.lang.model.element.TypeElement;
 
-public class _ShadowLaunchingAnnotationProcessor extends AbstractProcessor {
-	private final AbstractProcessor instance = createWrappedInstance();
-	
-	@Override public Set<String> getSupportedOptions() {
-		return instance.getSupportedOptions();
-	}
-	
-	@Override public Set<String> getSupportedAnnotationTypes() {
-		return instance.getSupportedAnnotationTypes();
-	}
-	
-	@Override public SourceVersion getSupportedSourceVersion() {
-		return instance.getSupportedSourceVersion();
-	}
-	
-	@Override public void init(ProcessingEnvironment processingEnv) {
-		instance.init(processingEnv);
-		super.init(processingEnv);
-	}
-	
-	@Override public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
-		return instance.process(annotations, roundEnv);
-	}
-	
-	@Override public Iterable<? extends Completion> getCompletions(Element element, AnnotationMirror annotation, ExecutableElement member, String userText) {
-		return instance.getCompletions(element, annotation, member, userText);
-	}
-	
-	private static AbstractProcessor createWrappedInstance() {
-		ClassLoader cl = Main.createShadowClassLoader();
-		try {
-			Class<?> mc = cl.loadClass("lombok.core.AnnotationProcessor");
-			return (AbstractProcessor) mc.newInstance();
-		} catch (Throwable t) {
-			if (t instanceof Error) throw (Error) t;
-			if (t instanceof RuntimeException) throw (RuntimeException) t;
-			throw new RuntimeException(t);
+class AnnotationProcessorHider {
+	public static class AnnotationProcessor extends AbstractProcessor {
+		private final AbstractProcessor instance = createWrappedInstance();
+		
+		@Override public Set<String> getSupportedOptions() {
+			return instance.getSupportedOptions();
+		}
+		
+		@Override public Set<String> getSupportedAnnotationTypes() {
+			return instance.getSupportedAnnotationTypes();
+		}
+		
+		@Override public SourceVersion getSupportedSourceVersion() {
+			return instance.getSupportedSourceVersion();
+		}
+		
+		@Override public void init(ProcessingEnvironment processingEnv) {
+			instance.init(processingEnv);
+			super.init(processingEnv);
+		}
+		
+		@Override public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
+			return instance.process(annotations, roundEnv);
+		}
+		
+		@Override public Iterable<? extends Completion> getCompletions(Element element, AnnotationMirror annotation, ExecutableElement member, String userText) {
+			return instance.getCompletions(element, annotation, member, userText);
+		}
+		
+		private static AbstractProcessor createWrappedInstance() {
+			ClassLoader cl = Main.createShadowClassLoader();
+			try {
+				Class<?> mc = cl.loadClass("lombok.core.AnnotationProcessor");
+				return (AbstractProcessor) mc.newInstance();
+			} catch (Throwable t) {
+				if (t instanceof Error) throw (Error) t;
+				if (t instanceof RuntimeException) throw (RuntimeException) t;
+				throw new RuntimeException(t);
+			}
 		}
 	}
 }