Format the generated manifest

Fix eclipse-pde#804

ui/org.eclipse.pde.core/src/org/eclipse/pde/internal/core/bnd/FormatedManifestResource.java

@@ -0,0 +1,52 @@
+/*******************************************************************************
+ * Copyright (c) 2023 Christoph Läubrich and others.
+ *
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Christoph Läubrich - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.pde.internal.core.bnd;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.nio.charset.StandardCharsets;
+import java.util.Map;
+import java.util.jar.Manifest;
+
+import org.eclipse.osgi.util.ManifestElement;
+import org.eclipse.pde.internal.core.util.ManifestUtils;
+import org.osgi.framework.BundleException;
+
+import aQute.bnd.osgi.ManifestResource;
+
+public class FormatedManifestResource extends ManifestResource {
+
+	public FormatedManifestResource(Manifest manifest) {
+		super(manifest);
+	}
+
+	@Override
+	public void write(OutputStream out) throws IOException {
+		ByteArrayOutputStream bout = new ByteArrayOutputStream();
+		super.write(bout);
+		try {
+			Map<String, String> map = ManifestElement.parseBundleManifest(new ByteArrayInputStream(bout.toByteArray()),
+					null);
+			try (OutputStreamWriter writer = new OutputStreamWriter(out, StandardCharsets.UTF_8)) {
+				ManifestUtils.writeManifest(map, writer);
+			}
+		} catch (BundleException e) {
+			throw new IOException("invalid manifest", e); //$NON-NLS-1$
+		}
+	}
+
+}

ui/org.eclipse.pde.core/src/org/eclipse/pde/internal/core/bnd/ProjectJar.java

@@ -85,7 +85,7 @@ public ProjectJar(IProject project, Predicate<IResource> filter) throws CoreExce
 	@Override
 	public void setManifest(Manifest manifest) {
 		super.setManifest(manifest);
-		ManifestResource resource = new ManifestResource(manifest);
+		ManifestResource resource = new FormatedManifestResource(manifest);
 		// We must handle this with a little care here, first we put it as a
 		// resource, what will make other parts of BND find it and copy it to
 		// the output location(so it can be found when using the output as a