toppath=$(pwd)
## Build any necessary qualifiers.
-qual= sep=.
+qual= qualsep=.
case ${SBOX_SESSION_DIR+t},${DEB_BUILD_ARCH+t} in
- t,t) qual=$qual$sep$DEB_BUILD_ARCH; sep=- ;;
+ t,t) qual=$qual$qualsep$DEB_BUILD_ARCH; qualsep=- ;;
t,*) fail "unknown build arch" ;;
esac