From d8db5996232207bc678f333bfca2e9e34a40a243 Mon Sep 17 00:00:00 2001
From: pvincent <pvincent@artcode.re>
Date: Mon, 27 Jul 2026 16:25:46 +0400
Subject: [PATCH] poc3

---
 poc | 88 ++++++++++++++++++++++++++++++++++---------------------------
 1 file changed, 49 insertions(+), 39 deletions(-)

diff --git a/poc b/poc
index c5c5091..d28014d 100755
--- a/poc
+++ b/poc
@@ -24,16 +24,22 @@ function tty_ansi {
   [[ -n $fg ]] && >/dev/tty echo -ne "\e[${fg}m" || true
 }
 
+function print_miaou_error {
+  local source="$1" line="$2" code="$3" type="$4" payload="${5:-}"
+  >&2 echo -n "${source}: line ${line}: miaou_error: code=${code} type=${type}"
+  [[ -n "$payload" ]] && >&2 echo " payload=${payload}" || >&2 echo
+}
+
 function on_error {
-  local code
-  code="${1:-100}"
+  failure_code="${1:-200}"
   >/dev/tty printf '\r' # force carriage return explicitly
 
-  miaou_debug "on_error: $code ($$ -- $BASHPID)"
+  miaou_debug "on_error: $failure_code ($$ -- $BASHPID)"
 
   if [[ $$ == "$BASHPID" ]]; then
-    >&2 echo "${BASH_SOURCE[1]}: line ${BASH_LINENO[0]}: command_error: ${code}"
     failure_type="COMMAND_ERROR"
+    print_miaou_error "${BASH_SOURCE[1]}" "${BASH_LINENO[0]}" "${failure_code}" "${failure_type}" '...'
+
     error_source=("${BASH_SOURCE[@]}")
     error_lineno=("${BASH_LINENO[@]}")
     error_funcname=("${FUNCNAME[@]}")
@@ -44,13 +50,41 @@ function on_error {
     error_lineno=("${error_lineno[@]}")
     error_funcname=("${error_funcname[@]}")
 
-    exit "$code"
+    exit "$failure_code"
   else
-    >&2 echo "${BASH_SOURCE[1]}: line ${BASH_LINENO[0]}: subshell_error: ${code}"
+    print_miaou_error "${BASH_SOURCE[1]}" "${BASH_LINENO[0]}" "${failure_code}" 'SUBSHELL'
     kill -PIPE $$
   fi
 }
 
+function on_pipe {
+  local tmp_error regex source lineno
+
+  error_source=("${BASH_SOURCE[@]}")
+  error_lineno=("${BASH_LINENO[@]}")
+  error_funcname=("${FUNCNAME[@]}")
+  unset 'error_source[0]' 'error_lineno[0]' 'error_funcname[0]'
+  unset 'error_source[-1]' 'error_lineno[-1]' 'error_funcname[-1]'
+  unset 'error_source[-1]' 'error_lineno[-1]' 'error_funcname[-1]'
+
+  mapfile -t tmp_error <"$MIAOU_BASH_ERROR"
+  last_error="${tmp_error[-1]}"
+  regex='(.*): line ([0-9]+): miaou_error: code=([0-9]+) type=SUBSHELL'
+  if [[ $last_error =~ $regex ]]; then
+    source=${BASH_REMATCH[1]}
+    lineno=${BASH_REMATCH[2]}
+    failure_code=${BASH_REMATCH[3]}
+    failure_type="SUBSHELL_ERROR"
+    error_source=("$source" "${error_source[@]}")
+    error_lineno=("$lineno" "${error_lineno[@]}")
+    error_funcname=("${error_funcname[@]}" '<main>')
+  else
+    failure_code=141
+    failure_type="PIPE_ERROR"
+  fi
+  # miaou_debug on_pipe: "${failure_code}"
+  exit "$failure_code"
+}
 function dump_stderr {
   miaou_debug --stderr--
   mapfile -t tmp_error <"$MIAOU_BASH_ERROR"
@@ -63,10 +97,17 @@ function dump_stderr {
 function dump_failure {
   miaou_debug --error box--
   tty_ansi 94
-  echo -n "FAILURE TYPE = "
+  echo -n "MIAOU_BASH: "
   tty_ansi 95
-  echo "$failure_type"
+  echo -n "$failure_type"
+  if [[ -v failure_payload ]]; then
+    tty_ansi 94
+    echo -n " $failure_payload"
+  fi
+  tty_ansi 33
+  printf "%5i" "$failure_code"
   tty_ansi 0
+  echo
   miaou_debug --end of error box--
 }
 
@@ -96,36 +137,6 @@ function on_exit {
   miaou_debug "on_exit $code"
 }
 
-function on_pipe {
-  local code tmp_error regex
-
-  error_source=("${BASH_SOURCE[@]}")
-  error_lineno=("${BASH_LINENO[@]}")
-  error_funcname=("${FUNCNAME[@]}")
-  unset 'error_source[0]' 'error_lineno[0]' 'error_funcname[0]'
-  unset 'error_source[-1]' 'error_lineno[-1]' 'error_funcname[-1]'
-  unset 'error_source[-1]' 'error_lineno[-1]' 'error_funcname[-1]'
-
-  mapfile -t tmp_error <"$MIAOU_BASH_ERROR"
-  last_error="${tmp_error[-1]}"
-  regex='(.*): line ([0-9]+): subshell_error: ([0-9]+)'
-  if [[ $last_error =~ $regex ]]; then
-    source=${BASH_REMATCH[1]}
-    lineno=${BASH_REMATCH[2]}
-    code=${BASH_REMATCH[3]}
-    failure_type="SUBSHELL_ERROR"
-    error_source=("$source" "${error_source[@]}")
-    error_lineno=("$lineno" "${error_lineno[@]}")
-    error_funcname=("${error_funcname[@]}" '<main>')
-  else
-    code=141
-    failure_type="PIPE_ERROR"
-  fi
-
-  # miaou_debug on_pipe: "${code}"
-  exit "$code"
-}
-
 ## main
 
 set -euo pipefail
@@ -143,5 +154,4 @@ miaou_debug "--source from ${BASHPID}"
 exec 3>/dev/stderr
 # shellcheck source=/dev/null
 2>"$MIAOU_BASH_ERROR" source "$BASH_ARGV0"
-exec 3>-
 miaou_debug '--source success'