print_miaou_error payload:

poc

@@ -96,8 +96,8 @@ function tty_ansi {
 
 function print_miaou_error {
   local source="$1" line="$2" code="$3" type="$4" payload="${5:-}"
-  >&2 echo -n "${source}: line ${line}: miaou_error: code=${code} type=${type}"
-  [[ -n "$payload" ]] && >&2 echo " payload=${payload}" || >&2 echo
+  >&2 echo -n "${source}: line ${line}: miaou_error: ${type} ${code}"
+  [[ -n "$payload" ]] && >&2 echo " payload: ${payload}" || >&2 echo
 }
 
 function on_error {
@@ -134,8 +134,8 @@ function on_error {
 
     builtin exit "$failure_code"
   else
-    miaou_debug "<on_error pipe=$failure_code sub_pid=$BASHPID pid=$$/>"
-    print_miaou_error "${BASH_SOURCE[1]}" "${BASH_LINENO[0]}" "${failure_code}" 'SUBSHELL_ERROR'
+    miaou_debug "<on_error pipe=$failure_code sub_pid=$BASHPID pid=$$ command='${BASH_COMMAND}'/>"
+    print_miaou_error "${BASH_SOURCE[1]}" "${BASH_LINENO[0]}" "${failure_code}" 'SUBSHELL_ERROR' "${BASH_COMMAND}"
     kill -PIPE $$
   fi
 }
@@ -153,13 +153,13 @@ function on_pipe {
 
   mapfile -t tmp_error <"$MIAOU_BASH_ERROR"
   last_error="${tmp_error[-1]}"
-  regex='(.*): line ([0-9]+): miaou_error: code=([0-9]+) type=SUBSHELL_ERROR'
+  regex='^(.*): line ([0-9]+): miaou_error: SUBSHELL_ERROR ([0-9]+) payload: (.*)$'
   if [[ $last_error =~ $regex ]]; then
     source=${BASH_REMATCH[1]}
     lineno=${BASH_REMATCH[2]}
     failure_code=${BASH_REMATCH[3]}
+    failure_payload=${BASH_REMATCH[4]}
     failure_type="SUBSHELL_ERROR"
-    failure_payload='...'
     error_source=("$source" "${error_source[@]}")
     error_lineno=("$lineno" "${error_lineno[@]}")
     error_funcname=("${error_funcname[@]}" '<main>')
@@ -231,7 +231,7 @@ function on_exit {
   2>&3 >&3 dump_stderr
   if [[ -v failure_type && "$failure_type" == 'RETURN' ]]; then
     last_error="${tmp_error[-1]}"
-    regex='^(.*): line ([0-9]+): miaou_error: code=[0-9]+ type=RETURN'
+    regex='^(.*): line ([0-9]+): miaou_error: RETURN [0-9]+'
     if [[ "$last_error" =~ $regex ]]; then
       miaou_debug "<return exit=$code />"
       local source line