From 6fb25d217df852e146de13f226311107eac35553 Mon Sep 17 00:00:00 2001
From: pvincent <pvincent@artcode.re>
Date: Mon, 27 Jul 2026 14:47:15 +0400
Subject: [PATCH] arg0

---
 poc                     | 19 ++++++++++++-------
 test/stub/scenario.bash | 13 +++++++++----
 2 files changed, 21 insertions(+), 11 deletions(-)

diff --git a/poc b/poc
index ce4549d..c5c5091 100755
--- a/poc
+++ b/poc
@@ -86,13 +86,14 @@ function dump_stacktrace {
 
 function on_exit {
   code="${1:-0}"
-  failure_type="${failure_type:-UNDEFINED}"
 
   2>&3 >&3 dump_stderr
-  2>&3 >&3 dump_failure
-  2>&3 >&3 dump_stacktrace
+  if [[ -v failure_type ]]; then
+    2>&3 >&3 dump_failure
+    2>&3 >&3 dump_stacktrace
+  fi
 
-  miaou_debug "on_exit $code $failure_type"
+  miaou_debug "on_exit $code"
 }
 
 function on_pipe {
@@ -131,12 +132,16 @@ set -euo pipefail
 set -E # HALT on subshell error
 # set -T # DEBUG RETURN
 
+[[ $# -lt 1 ]] && >&2 echo 'ERROR: script expected!' && builtin exit 1
+BASH_ARGV0="$1" && shift # to pretend script runs by itself
+
 trap 'on_error $?' ERR
 trap 'on_exit $?' EXIT
 trap 'on_pipe' PIPE
 
-echo "--SOURCE scenario ${BASHPID}"
+miaou_debug "--source from ${BASHPID}"
 exec 3>/dev/stderr
-2>"$MIAOU_BASH_ERROR" source ./test/stub/scenario.bash subshell_term
+# shellcheck source=/dev/null
+2>"$MIAOU_BASH_ERROR" source "$BASH_ARGV0"
 exec 3>-
-echo "--SUCCESS scenario"
+miaou_debug '--source success'
diff --git a/test/stub/scenario.bash b/test/stub/scenario.bash
index 0bd908d..ecb4aa2 100755
--- a/test/stub/scenario.bash
+++ b/test/stub/scenario.bash
@@ -165,10 +165,15 @@ function usage {
   introspect_scenarii
   (
     IFS='|'
-    echo "USAGE: $0 <${SCENARII[*]}>"
+    echo "USAGE: $0 <case_scenario>"
   )
-  echo -e "\trun case scenario which performs various bash statements and mostly fails"
-  echo -e "\tthese case scenarii helps testing the miaou-bash script"
+  echo -e "\trun a case scenario built from various bash statements and mostly ends up on failure"
+  echo -e "\tthese case scenarii provide the help suite needed for \`miaou-bash\`"
+  echo -e "\there is the list of available case scenario:"
+  local i
+  for i in "${SCENARII[@]}"; do
+    echo -e "\t- $i"
+  done
 }
 
 function introspect_scenarii {
@@ -183,7 +188,7 @@ function test_contain_item {
 
 # MAIN
 
-[[ $# -eq 0 ]] && >&2 echo 'arg1 expected!' && usage && exit 1
+[[ $# -eq 0 ]] && >&2 echo '<case_scenario> required!' && usage && exit 1
 
 scenario="$1"
 introspect_scenarii