mwolff:     add filter utilility function
mwolff:
    add filter utilility function

svn path=/trunk/KDE/kdelibs/kate/; revision=1156419

hlamer/kate,jfmcarreira/kate,sandsmark/kate,jfmcarreira/kate,hlamer/kate,hlamer/kate,DickJ/kate,cmacq2/kate,sandsmark/kate,hlamer/kate,jfmcarreira/kate,hlamer/kate,DickJ/kate,hlamer/kate,cmacq2/kate,hlamer/kate,sandsmark/kate,DickJ/kate,cmacq2/kate,DickJ/kate,hlamer/kate,hlamer/kate,sandsmark/kate,hlamer/kate