File: set-x2.sub

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declare -a metas
set a b c

set -x
# some time we will have better compound assignment printing (after expansion)
metas=( \|  \& \; \( \) \< \> $' ' $'\t' $'\n' )
n=( $@ )

# like regular expansions
: "${metas[@]}"

DEFAULT_IFS=$' \t\n'

set +x
declare -p metas