flush or a tree of TMP_ERROR might be useful

bin/bash-back

@@ -78,8 +78,15 @@ function on_exit {
         stack_summary+=("ERROR $code: [$message]")
       fi
     else
-      # FIXME: should grab the whole stacktrace, then print back again,
-      # because previous stderr might disappear from the first script after calling subprocess!
+      # FIXME: should either
+      # 1. grab the whole stacktrace, then print back again
+      # 2. or FLUSH previous stderr
+      # because previous stderr might disappear from the first script when calling subprocess!
+      #
+      # ```bash
+      # >&2 echo some trace in stderr
+      # lib/utility.bash # which contains error
+      # ```
       regex="^	.*:[0-9]*	.*\$"
       [[ "$last_error" =~ $regex ]] || stack_summary+=("ERROR $code: <undefined>")
     fi

lib/utility.bash

@@ -8,12 +8,12 @@ function blabla {
 }
 
 function suite {
+  echo $nope
   return
   exit
   command_not_found
   exit 10 # youpi
   return 7
-  echo $nope
 }
 
 blabla

useless.sh

@@ -32,8 +32,8 @@ function F3 {
 echo start of useless
 F3
 >&2 echo some trace in stderr
-. lib/utility.bash
 lib/utility.bash
+. lib/utility.bash
 
 main
 # error