$ A="dc -e'[[dc -e]P39dP8BPrP8DP1F6BAPP10P]dx'"; diff -sq <(echo $A) <(eval $A); echo $A | tee /dev/stderr | wc -c
Files /dev/fd/63 and /dev/fd/62 are identical
dc -e'[[dc -e]P39dP8BPrP8DP1F6BAPP10P]dx'
42
License: public domain
$ A="dc -e'[[dc -e]P39dP8BPrP8DP1F6BAPP10P]dx'"; diff -sq <(echo $A) <(eval $A); echo $A | tee /dev/stderr | wc -c
Files /dev/fd/63 and /dev/fd/62 are identical
dc -e'[[dc -e]P39dP8BPrP8DP1F6BAPP10P]dx'
42
License: public domain