Custom split build process

gistfile1.txt

<![CDATA[
    # Build a set containing everything, the entire application and the used framework.
    restore
        page
    and
    save
        entireApp
    and
    # Build a set containing the entire framework.
    union
        -tag=package-sencha-core,framework
    and
    save
        entireFramework
    and
    # Output just the used framework code, it is the intersection of entireApp and entireFramework.
    intersect
        -set=entireApp,entireFramework
    and
    ${build.optimize}
    and
    concat
        ${build.compression}
        -out=${build.framework.file}
        ${build.concat.options}
    # Output just the application code.
    and
    restore
         page
    and
    exclude
          -tag=framework,package-sencha-core
    and
    ${build.optimize}
    and
    concat
         -out=${build.classes.file}
          ${build.concat.options}
          -b
]]>