$(echo '$LANG' is $LANG)

$(echo 'quoted1)') -- quoted1)

$(echo "quoted2)") -- quoted2)

$(echo '"quoted3)"') -- "quoted3)"

$(echo '"quoted4")') -- "quoted4")

$(echo "'quoted5)'") -- 'quoted5)'

$(echo "'quoted6')") -- 'quoted6')

$(echo "'forgot6-1')) -- as is

$(echo "'forgot5-1)') -- as is

$(echo '"forgot4")) -- as is

$(echo '"forgot3)") -- as is

$(echo "forgot2)) -- as is

$(echo 'forgot1)) -- as is

$(echo 'quoted10\'')') -- quoted10\)

$(echo "quoted20\")") -- quoted20")

$(echo '"quoted3\")"') -- "quoted3\")"

$(echo '"quoted4\"")') -- "quoted4\"")

$(echo "'quoted5\')'") -- 'quotedd\')'

$(echo "'quoted6\'')") -- 'quoted6\'')

$(echo \) fin) -- ) fin
