not yet done with subshell error

bin/miaou-bash

@@ -161,10 +161,9 @@ function on_exit {
         fi
       fi
     else
-      failure_type='UNDEFINED'
-      miaou_debug "last error=${last_error}"
       failure_payload="${last_error}"
-      regex="^	.*:[0-9]*	.*\$"
+      miaou_debug "UNDEFINED last error=${last_error}"
+      regex="╟─⟶"
       if [[ "$last_error" =~ $regex ]]; then
         if [[ "${code}" == 128 ]]; then
           failure_type='SUBSHELL_SOURCE_NOT_FOUND'
@@ -174,6 +173,7 @@ function on_exit {
           stack_functions[0]="${stack_functions[0]} (hint: prefer source than subshell:3)"
         fi
       else
+        failure_type='UNDEFINED'
         regex='^subshell term:'
         if [[ "$last_error" =~ $regex ]]; then
           failure_type='SUBSHELL_TERM2'
@@ -229,7 +229,7 @@ function ansi_traces {
   declare -n functions=$3
   optional=false
   for i in "${!sources[@]}"; do
-    FG=RED style_ansi "     ╟─⟶"
+    FG=RED style_ansi "     ╟─⟶ "
     location=$(printf "%40s" "${sources[$i]}:${lines[$i]}")
     is_true "$optional" &&
       location=$(FG=GRAY STYLE=ITALIC style_ansi "$location") ||
@@ -297,7 +297,7 @@ BASH_ARGV0="$1" && shift # to pretend script runs by itself
 # magic FD + delayed tee => /dev/fd/3 means delayed stderr, /dev/fd/4 remains original stderr
 exec 3> >(tee "$MIAOU_BASH_ERROR" >/dev/null) 4>/dev/stderr
 
-miaou_debug '---stdout---'
+miaou_debug "---stdout--$$ $BASHPID $PPID--"
 # shellcheck source=/dev/null
 source "$BASH_ARGV0" 2>&3
 dump_success