tee >/dev/null

bin/bash-back

@@ -1,8 +1,8 @@
 #!/usr/bin/env bash
 
 # CONSTANTS
-DEBUG=${BASH_BACK_DEBUG:-false}
 TMP_ERROR=$(mktemp -t "$(basename $0).XXXXXXXX" --tmpdir=/run/user/$(id -u))
+DEBUG=${BASH_BACK_DEBUG:-false}
 SCRIPT=$1
 
 # FUNCTIONS
@@ -78,15 +78,6 @@ function on_exit {
         stack_summary+=("ERROR $code: [$message]")
       fi
     else
-      # 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
@@ -145,7 +136,7 @@ trap 'on_exit $?' ERR TERM INT EXIT
 trap 'on_return' DEBUG
 
 # magic FD
-exec 3>$TMP_ERROR 4>/dev/stderr
+exec 3> >(tee $TMP_ERROR >/dev/null) 4>/dev/stderr
 $DEBUG && >/dev/tty echo '---stdout---'
 source $SCRIPT 2>&3
 success

lib/utility.bash

@@ -3,17 +3,17 @@
 
 function blabla {
   echo IN blabla OUT
+  >&2 echo stderr from utility
   suite
-  echo $?
 }
 
 function suite {
+  return 7
+  exit 10 # youpi
   echo $nope
-  return
-  exit
   command_not_found
-  exit 10 # youpi
-  return 7
+  exit
+  return
 }
 
 blabla

useless.sh

@@ -31,8 +31,10 @@ function F3 {
 
 echo start of useless
 F3
->&2 echo some trace in stderr
+>&2 echo some trace in stderr1
 lib/utility.bash
+>&2 echo some trace in stderr2
+
 . lib/utility.bash
 
 main