From a62bd7acc5c015f96b208ed44ba304e071579c9d Mon Sep 17 00:00:00 2001
From: pvincent <pvincent@artcode.re>
Date: Mon, 6 Jul 2026 18:37:35 +0400
Subject: [PATCH] backtrace.bash

---
 install.sh         | 48 ++++++----------------------------------------
 lib/backtrace.bash | 47 +++++++++++++++++++++++++++++++++++++++++++++
 test.sh            | 12 ++++++++++++
 3 files changed, 65 insertions(+), 42 deletions(-)
 create mode 100755 test.sh

diff --git a/install.sh b/install.sh
index bb31f06..e2fa5e4 100755
--- a/install.sh
+++ b/install.sh
@@ -6,33 +6,6 @@ BASEDIR=$(dirname $0)
 
 ## FUNCTIONS
 
-function exit {
-  on_exit $1 true
-}
-
-function on_exit {
-  local error_code bypass_last_call stack_lines
-  error_code=$1
-
-  bypass_last_call=${2:-false}
-  stack_lines=("${BASH_LINENO[@]}")
-  $bypass_last_call && stack_lines=("${stack_lines[@]:1}")
-
-  # remove 1 on head list
-  [[ ${#stack_lines[@]} > 0 && ${stack_lines[0]} == 1 ]] && unset stack_lines[0]
-
-  # remove 0 on tail list
-  [[ ${#stack_lines[@]} > 0 && ${stack_lines[-1]} == 0 ]] && unset stack_lines[-1]
-
-  if [[ $error_code > 0 ]]; then
-    printf "\nEXIT #${error_code} due to error at line ${stack_lines[*]} : \n-----------------------------------------\n"
-    trap - ERR TERM INT EXIT
-    builtin exit "${error_code}"
-  else
-    echo SUCCESS
-  fi
-}
-
 function assert_debian13 {
   test -f /etc/debian_version &&
     grep --quiet ^13\. /etc/debian_version ||
@@ -67,26 +40,19 @@ function install_ghostty {
 
 function install_homebrew {
   # $nope
+  grep OK file
   # exit 11
   # echo AAA
+
+  on_exit 45
+  exit 45
+
   raise_error 'BBB'
   false
   echo BBB
   bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
 }
 
-function raise_error {
-  message=${1:-an undefined error has occured!}
-  code=${2:-1}
-  echo "error ${code}: ${message}" >&2
-  echo "FUNCNAME:    ${FUNCNAME[@]}" >&2 # inner outer main
-  echo "BASH_SOURCE: ${BASH_SOURCE[@]}" script.sh script.sh script.sh >&2
-  echo "BASH_LINENO: ${BASH_LINENO[@]}" 52 55 0 >&2
-  trap - ERR TERM INT EXIT
-  # builtin exit "${code}"
-  on_exit $code true
-}
-
 function set_alternative {
   local key command path_to_command path_to_key
   key=$1
@@ -145,13 +111,11 @@ function install_neovim {
   else
     echo 'nvim-vanilla ready!'
   fi
-  exit 3
 }
 
 ## MAIN
 
-set -TEue
-trap 'on_exit $?' ERR TERM INT EXIT
+source "$BASEDIR/lib/backtrace.bash"
 
 assert_debian13
 assert_gnome_desktop
diff --git a/lib/backtrace.bash b/lib/backtrace.bash
index e69de29..7701df9 100644
--- a/lib/backtrace.bash
+++ b/lib/backtrace.bash
@@ -0,0 +1,47 @@
+## CONSTANTS
+
+CURRENT_SOURCE="${BASH_SOURCE[0]}"
+
+## FUNCTIONS
+
+function exit {
+  on_exit $1 true
+}
+
+function on_exit {
+  local error_code bypass_last_call stack_lines
+  error_code=$1
+
+  bypass_last_call=${2:-false}
+  echo $CURRENT_SOURCE bypass_last_call=$bypass_last_call
+  stack_lines=("${BASH_LINENO[@]}")
+
+  #
+  # # remove 1 on head list
+  # [[ ${#stack_lines[@]} > 0 && ${stack_lines[0]} == 1 ]] && unset stack_lines[0]
+  #
+  # # remove 0 on tail list
+  # [[ ${#stack_lines[@]} > 0 && ${stack_lines[-1]} == 0 ]] && unset stack_lines[-1]
+
+  if [[ $error_code > 0 ]]; then
+    printf "\nEXIT #${error_code} due to error at line ${stack_lines[*]} : \n-----------------------------------------\n"
+    echo "FUNCNAME:    ${FUNCNAME[@]}" >&2 # inner outer main
+    echo "BASH_SOURCE: ${BASH_SOURCE[@]}" >&2
+    echo "BASH_LINENO: ${BASH_LINENO[@]}" >&2
+    trap - ERR TERM INT EXIT
+    builtin exit "${error_code}"
+  else
+    echo SUCCESS
+  fi
+}
+
+function raise_error {
+  message=${1:-an undefined error has occured!}
+  code=${2:-1}
+  echo "error ${code}: ${message}" >&2
+  trap - ERR TERM INT EXIT
+  on_exit $code true
+}
+
+set -TEue
+trap 'on_exit $?' ERR TERM INT EXIT
diff --git a/test.sh b/test.sh
new file mode 100755
index 0000000..3588c6b
--- /dev/null
+++ b/test.sh
@@ -0,0 +1,12 @@
+#!/usr/bin/env -S -- bash
+
+## CONSTANTS
+
+BASEDIR=$(dirname $0)
+
+## MAIN
+
+source "$BASEDIR/lib/backtrace.bash"
+echo START test
+grep toto nope
+echo END test