fix child_error to classic command_error

bin/miaou-bash

@@ -290,14 +290,14 @@ function dump_failure {
 function save_err_trace_to_main {
   miaou_debug "<save_stacktrace_to_stderr count=${#error_source[@]} to=${MIAOU_BASH_ERROR_CHILDREN}>"
   local i source lineno funcname
+  for i in "${tmp_error[@]}"; do >>"$MIAOU_BASH_ERROR_CHILDREN" echo "$i"; done
   for i in "${!error_source[@]}"; do
     source="${error_source[$i]}"
     lineno="${error_lineno[$i]}"
     funcname="${error_funcname[$i]}"
     miaou_debug "<trace source=${source} lineno=${lineno} funcname=${funcname}/>"
-    >>"$MIAOU_BASH_ERROR_CHILDREN" echo "miaou_trace: source=${source} lineno=${lineno} funcname=${funcname}"
+    >>"$MIAOU_BASH_ERROR_CHILDREN" echo -e "\tmiaou_trace: source=${source} lineno=${lineno} funcname=${funcname}"
   done
-  for i in "${tmp_error[@]}"; do >>"$MIAOU_BASH_ERROR_CHILDREN" echo "$i"; done
   miaou_debug "</save_stacktrace_to_stderr>"
 }
 
@@ -449,14 +449,12 @@ function build_miaou_bash_error {
 
   mkdir -p "$directory"
   if is_true $CHILD_PROCESS; then
-    MIAOU_BASH_ERROR="${directory}/${PPID}.$$.tmp"
     MIAOU_BASH_ERROR_CHILDREN="${directory}/${PPID}.children.tmp"
-  else
-    MIAOU_BASH_ERROR="${directory}/$$.tmp"
   fi
+  MIAOU_BASH_ERROR="${directory}/$$.tmp"
   rm -f "$MIAOU_BASH_ERROR"
 
-  readonly MIAOU_BASH_ERROR CHILD_PROCESS
+  readonly MIAOU_BASH_ERROR_CHILDREN MIAOU_BASH_ERROR CHILD_PROCESS
 }
 
 function cleanup {