Custom version of "declare -F" with filename and line number.

custom-declare.sh

# All my gist code is licensed under the terms of the MIT license.

# Video demo: https://www.youtube.com/shorts/q26DJ5qOXxM

# custom declare -F
# - add filename and table output to "declare -F"
# - this is based on the "declare -F name" output when shopt extdebug is on
function declare () {
  if [[ $# == 1 && "$1" == "-F" ]]; then
    shopt -s extdebug 
    source <(
      command declare -F | \
      awk '
        {
          print "declare -F " $NF;
        }'
    ) | \
    sed -E "s|$HOME|~|g" | \
    column -t
    shopt -u extdebug
  else
    command declare "$@";
  fi;
}