Revision control
++ project = ExpandVars
++
++ {data,data1,data2} = foo
++ data1 += bar
++ data2 += "bar baz"
++
++ expanded1 = $data
++ expanded2 = ${data1,,}
++ expanded3 = "${data1,} ${data2,}"
++ literally = \$data \${data}
++
++ listdata = ${QDOC_TSTCONFIG_LIST}
++ csvlist = ${listdata,,}