# through bash-4.2
${THIS_SH} ./dollar-at5.sub
+# tests for problems with "${@:1}" and other expansions with null entries
+# in positional parameters
+${THIS_SH} ./dollar-at6.sub
+
# tests for expansions of $* when $1 == ""; problem through bash-4.2
${THIS_SH} ./dollar-star6.sub