Index: src/main/java/org/apache/maven/archiver/MavenArchiver.java
===================================================================
--- src/main/java/org/apache/maven/archiver/MavenArchiver.java	(revision 393536)
+++ src/main/java/org/apache/maven/archiver/MavenArchiver.java	(working copy)
@@ -45,8 +45,11 @@
     private File archiveFile;
     
     /**
-     * Return a pre-configured manifest
+     * Return a pre-configured <i>raw</i> manifest.
      *
+     * The entries in the returned Manifest might contain characters that are invalid in
+     * a manifest file (such as \t, \n ...), and care should be taken when persisting them.
+     *
      * @todo Add user attributes list and user groups list
      */
     public Manifest getManifest( MavenProject project, ManifestConfiguration config )