bash nameref FML

1.bash

#!/usr/bin/env bash

set -o errexit
set -o nounset
set -o pipefail
shopt -s inherit_errexit
[[ -n "${VERBOSE:-}" ]] && set -o verbose
[[ -n "${DEBUG:-}" ]] && IS_DEBUG=true || IS_DEBUG=false

foo() {
  local -n a=$1
  local b=2
  echo "$a"
}

b=3

foo b
# It prints 2 not 3. WTF!