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run_tr ()
{
echo -n "echo '$1' | tr '$2' '$3': "
echo "$1" | $bb tr "$2" "$3"
echo
}
tr_test ()
{
run_tr "cbaab" abc zyx
run_tr "TESTING A B C" '[A-Z]' '[a-z]'
run_tr "abc[]" "a[b" AXB
run_tr abc '[:alpha:]' A-ZA-Z
run_tr abc56 '[:alnum:]' A-ZA-Zxxxxxxxxxx
run_tr 012 '[:digit:]' abcdefghi
run_tr abc56 '[:lower:]' '[:upper:]'
run_tr " " '[:space:]' 12345
run_tr " " '[:blank:]' 12
run_tr 'a b' '[= =]' X
run_tr "[:" '[:' ab
}
bb= tr_test > logfile.gnu
bb=busybox tr_test > logfile.bb
cmp logfile.gnu logfile.bb
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