Somebody may want to inspect the output from
$ git grep -E -i -e '^ *(local|export) [a-z0-9_]*=\$'
and fix those that can be used with dash. I made a cursory scan and
removed obviously safe ones whose RHS will never have $IFS whitespaces,
and the following are remainders. #leftoverbits
t/t0610-reftable-basics.sh: local actual=$(ls -l "$file") &&
t/test-lib-functions.sh: local file=${2:-"$1.t"} &&
t/test-lib-functions.sh: local basename=${1#??}
t/test-lib-functions.sh: local var=$1 port
t/test-lib-functions.sh: local expr=$(printf '"%s",' "$@")
t/test-lib-functions.sh: local inc=${2:-0} &&
t/test-lib-functions.sh: local inc=${2:-0} &&
t/test-lib-functions.sh: local ret=$?
