Version 2
    svn co <JBoss AS sources> jboss
    cd jboss
    mvn dependency:sources
    
    SRC_DIR=~/tmp/jboss-mvn-src
    mkdir -p SRC_DIR
    cd ~/.m2/repository/org/jboss
    find . -name *-sources.jar -exec cp {} SRC_DIR \;
    
    cd SRC_DIR
    for i in `ls`; do mkdir $i.dir; cd $i.dir; jar -xf ../$i; cd ..; done;
    
    # Now search it however you want... e.g.:
    find . -name *.java -exec grep -H xb.builder.useUnorderedSequence {} \;