bash_argv0

bin/miaou-bash

@@ -2,10 +2,9 @@
 
 # CONSTANTS
 
-BASH_BACK_NAME=$(basename "${0}")
-BASH_BACK_ERROR=$(mktemp -t "${BASH_BACK_NAME}.XXXXXXXX" --tmpdir="/run/user/$(id -u)")
+BASH_BACK_ERROR=$(mktemp -t "$(basename "$0").XXXXXXXX" --tmpdir="/run/user/$(id -u)")
 BASH_BACK_DEBUG=${BASH_BACK_DEBUG:-false}
-readonly BASH_BACK_NAME BASH_BACK_ERROR BASH_BACK_DEBUG
+readonly BASH_BACK_ERROR BASH_BACK_DEBUG
 
 # FUNCTIONS
 
@@ -131,18 +130,16 @@ function cleanup {
 # MAIN
 
 set -TEue -o pipefail
-[[ $# -ne 1 ]] && >&2 echo 'ERROR: script expected!' && builtin exit 1
+[[ $# -lt 1 ]] && >&2 echo 'ERROR: script expected!' && builtin exit 1
 
 trap 'on_exit $?' ERR TERM INT EXIT
 trap 'on_return' DEBUG
+BASH_ARGV0="$1" && shift # to pretend script runs by itself
 
-# magic FD + delayed tee
+# magic FD + delayed tee => /dev/fd/3 means delayed stderr, /dev/fd/4 remains stderr
 exec 3> >(tee "$BASH_BACK_ERROR" >/dev/null) 4>/dev/stderr
 
-# magic $0
-BASH_ARGV0="$1" # to pretend script runs by itself
-
 $BASH_BACK_DEBUG && >/dev/tty echo '---stdout---'
 # shellcheck source=/dev/null
-source "$1" 2>&3
+source "$BASH_ARGV0" 2>&3
 success