# this is needed because aliases defined inside an if statement are not

# available inside that if statement

if self_not_included "${BASH_SOURCE[0]}"; then

shopt -s expand_aliases

unalias () { builtin unalias "$@" 2>&- || true; } # no error if undefined

#### exceptions

alias rethrow='return "$e"'

alias end_try='rethrow'

alias end_try_subshell='rethrow_subshell'

#### integers

let () { builtin let "$@" || true; }

bool2int () { save_e test -z "$1"; echo "$e"; } # empty->0; non-empty->1

#### arrays

join () { local IFS="$delim"; echo "$*"; } # usage: delim=... join elems...

	for (( i=$#; i >= 1; i-- )); do printf '%q ' "${!i}"; done

}

#### verbose output

# usage: (stdout2stderr; cmd...) || return

fi # load new aliases

if self_being_included; then

#### strings

sed_ere_flag="$(test "$(uname)" = Darwin && echo E || echo r)"

sed () { self -"$sed_ere_flag" "$@";}

#### vars

set_var () { eval "$1"'="$2"'; }

EOF

)"

#### commands

top_script="$0" # outermost script

	done

}

#### URLs

localize_url () { test _"$1" = _"$(hostname -f)" || echo "$1"; }

log_sql () { test "$verbosity" -ge 2; }

### MySQL

# auto-adds connection/login opts when specified

	mysqldump "$@"|sed 's/^(-- Dump completed).*$/\1/'

}

### PostgreSQL

pg_copy_to ()