osx - returning to previous if statements in bash -

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say i've got following:

echo "would blarg, or flarg?" read -e act  if [ "$act" == "blarg" ] echo "go blarg." echo "possible blargs blah , flah, or go previous question."     read -e marv fi  if [ "$act" == "flarg" ] echo "go flarg." echo "possible flargs blah , flah, or go previous question."     read -e carve fi     (more if statements following general pattern)

i need know how back go previous question (blah or flah) answer either marv or carve, , 1 go first 1 (flarg or blarg).

edit: need know how redefine variable using read. boy, overthink things.

do mean this:

while ! [[ "${act-}" =~ [bf]larg ]]     read -e act     [...] done

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