.bash_profile

# ~/.bash_profile: executed by bash(1) for login shells.
[ -n "$PS1" ] && echo $(basename $BASH_SOURCE)...

showStack.disable() {
   local i=0
   # while caller $i; do ((i++)); done
   # for i in ${!BASH*}; do echo "$i=${!i}"; done
   for (( i=0; i < ${#BASH_SOURCE[@]}; i++ )); do
      [ "${FUNCNAME[$i]}" = source ] && echo "  ${BASH_SOURCE[$i]}:${BASH_LINENO[(($i - 1))]}"
      # echo -n "$((${#BASH_SOURCE[@]} - $i)):  ${BASH_SOURCE[$i]}:${BASH_LINENO[(($i - 1))]}"
      # [ "${FUNCNAME[$i]}" = "source" ] && echo || echo " ${FUNCNAME[$i]}()"
   done
   # echo "BASH_SOURCE(${#BASH_SOURCE[@]})"="${BASH_SOURCE[@]}"
   # echo "BASH_LINENO(${#BASH_LINENO[@]})"="${BASH_LINENO[@]}"
   # echo "FUNCNAME(${#FUNCNAME[@]})"="${FUNCNAME[@]}"
}

## TODO: Accommodate XDG_RUNTIME_DIR
## TODO: Add support for XDG_CONFIG_DIRS
[ -z "$XDG_CONFIG_HOME" -a -d  ~/.config ] && export XDG_CONFIG_HOME="$HOME/.config"
[ -z "$XDG_DATA_HOME" -a -d  ~/.local/share ] && export XDG_DATA_HOME="$HOME/.local/share"
[ -z "$XDG_CACHE_HOME" -a -d  ~/.cache ] && export XDG_CACHE_HOME="$HOME/.cache"
[ -z "$XDG_STATE_HOME" -a -d  ~/.state ] && export XDG_STATE_HOME="$HOME/.state"

## Source files, in order, if they exist and are not empty. Presume path is included
_sourceFiles() {
   local i
   for i in "$@"; do
      [ -s "$i" ] && source "$i"
   done
}
## Source dot files from "config" directory, defaulting to home directory
## TODO: Add support for XDG_CONFIG_DIRS
_sourceDotFiles() {
   local i
   for i in "$@"; do
   # echo "== Sourcing $i:"
   # set -x
      if [ -e "${i/#/$XDG_CONFIG_HOME/}" ]
         then source "${i/#/$XDG_CONFIG_HOME/}"
         else [ -s "${i/#/$HOME/}" ] && source "${i/#/$HOME/}"
      fi
   # set +x
   done
}

if shopt -q login_shell; then
   ## 1. .profile: common bash/non-bash specific login & interactive settings
   _sourceDotFiles .profile
   #_sourceDotFiles .bash_completion
else
   ## 2. .bashrc: Add bash-specific uninherited settings not covered by .profile
   ## completions, aliases, traps, shopt BASHOPTS, set SHELLOPTS
   _sourceDotFiles .bashrc
fi
# [ "${BASH_VERSINFO[0]}" -ge 5 ] && export PROMPT_DIRTRIM=3

## 3. .profile_*: userid, machine-name, "local"
_sourceDotFiles ".profile_`uname -s`" ".profile_${USER:-`id -un`}" ".profile_${HOSTNAME%.local}" .profile_local

unset -f _sourceFiles _sourceDotFiles