do not run twice

lib/backtrace.bash

@@ -9,11 +9,15 @@ CURRENT_SOURCE="${BASH_SOURCE[0]}"
 
 function exit {
   local error_code stack_lines stack_functions stack_sources
-  error_code=$1
+  error_code=${1:-0}
 
   stack_lines=("${BASH_LINENO[@]}")
   stack_functions=("${FUNCNAME[@]}")
   stack_sources=("${BASH_SOURCE[@]}")
+
+  unset stack_functions[0]
+  unset stack_sources[0]
+  unset stack_lines[-1]
   #
   # # remove 1 on head list
   # [[ ${#stack_lines[@]} > 0 && ${stack_lines[0]} == 1 ]] && unset stack_lines[0]
@@ -23,15 +27,15 @@ function exit {
 
   rm $script
   if [[ $error_code > 0 ]]; then
-    printf "\nEXIT #${error_code} due to error at line ${stack_lines[*]} : \n-----------------------------------------\n"
+    printf "\nEXIT #${error_code} due to error at line ${stack_lines} : \n-----------------------------------------\n"
     [[ -s /tmp/error ]] && echo -ne 'CAUSE:\t\t' && cat /tmp/error
-    echo -e "FUNCNAME:\t${FUNCNAME[@]}" >&2 # inner outer main
-    echo -e "BASH_SOURCE:\t${BASH_SOURCE[@]}" >&2
-    echo -e "BASH_LINENO:\t${BASH_LINENO[@]}" >&2
+    echo -e "FUNCNAME:\t${stack_functions[@]}" >&2 # inner outer main
+    echo -e "BASH_SOURCE:\t${stack_sources[@]}" >&2
+    echo -e "BASH_LINENO:\t${stack_lines[@]}" >&2
     trap - ERR TERM INT EXIT
     builtin exit "${error_code}"
   else
-    echo SUCCESS
+    echo __REAL_SUCCESS
   fi
 }
 
@@ -47,8 +51,8 @@ function raise_error {
 _BACKTRACE=${_BACKTRACE:-false}
 # echo "_BACKTRACE=${_BACKTRACE}"
 
-# a bit of magic: preserve performing the original script and rather running the backtrace version
-${_BACKTRACE} && return
+# a bit of magic: prevent performing the original script and rather running the backtrace version
+${_BACKTRACE} && builtin exit
 
 set -TEue
 trap 'exit $?' ERR TERM INT EXIT

test2.sh

@@ -7,12 +7,14 @@ function f1 {
   echo START f1
   # return 4
   # echo $nope
-  grep titi titi
-  grep titi titi 2>/dev/null
-  false
+  unknown_command
+  # grep titi titi
+  # grep titi titi 2>/dev/null
+  # false
   echo END F1
 }
 
 echo START test2
+echo 'toto' >>/tmp/toto
 f1
 echo END test2