diff --git a/CHANGELOG b/CHANGELOG
index 9c917a9..759fd6f 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,9 +1,13 @@
-0.4.1 2024-07-14: Fixes "Cancel" option not exiting on package resolution
-                  Fixes whitespace preventing package list matches on "remove all"
+0.5.0 2024-07-18: "Decide in editor" package conflict resolution strategy
+                  Drop pipefail shell option for dash compatibility
+                  Add numerical debug levels to the log utility function
+                  Check for shell option support before setting
+0.4.1 2024-07-14: Fix "Cancel" option not exiting on package resolution
+                  Fix whitespace preventing package list matches on "remove all"
 0.4.0 2024-07-14: "Add/remove all from configuration" resolution strategy
 0.3.1 2024-07-13: Refactor, new docs page, make cache refresh lazier
 0.3.0 2024-07-11: "Enter packages to install/uninstall" resolution strategy
 0.2.1 2024-07-10: Rename package_resolution.sh, document package conflicts
 0.2.0 2024-07-10: Implement "uninstall/instal all" package resolution strategies
 0.1.1 2024-07-07: Handle missing tori.conf and invalid installation root path
-0.1.0 2024-07-07: Added configuration parsing
+0.1.0 2024-07-07: Add configuration parsing
diff --git a/src/configuration.sh b/src/configuration.sh
index a50086f..71a3d5a 100644
--- a/src/configuration.sh
+++ b/src/configuration.sh
@@ -29,12 +29,8 @@ scan_packages() {
   user_packages="$(get_user_packages)"
 
   if [ "$system_packages" = "$user_packages" ]; then
-    log debug "packages match"
+    log debug "Packages match"
   else
-    log debug "packages mismatch"
-    log debug "system:\n$system_packages"
-    log debug "user:\n$user_packages"
-
     log user "System and configuration packages differ"
     resolve_packages
   fi
diff --git a/src/utility.sh b/src/utility.sh
index dacb48a..81ae419 100644
--- a/src/utility.sh
+++ b/src/utility.sh
@@ -4,12 +4,42 @@ log() {
   local level="$1"
   local message="$2"
 
-  if [ "$level" = fatal ]; then
-    echo "[tori] $(date "+%H:%M:%S"): $message" 1>&2
-  elif [ "$level" = user ]; then
-    echo "[tori] $(date "+%H:%M:%S"): $message" 1>&2
-  elif [ -n "$DEBUG" ] && [ "$level" = debug ]; then
-    echo "$(date "+%H:%M:%N") $message" 1>&2
+  print_user_message() {
+    echo "[tori] $(date "+%H:%M:%S"): $1" 1>&2
+  }
+
+  print_debug_message() {
+    echo "$(date "+%H:%M:%N") $1" 1>&2
+  }
+
+  if [ -z "$DEBUG" ]; then
+    DEBUG=3
+  elif ! echo "$DEBUG" | grep -q '^[[:number:]]$'; then
+    echo "[log] Warning: DEBUG should always be set to a number. Assuming DEBUG=3 (warn)"
+    DEBUG=3
+  fi
+
+  if [ -z "$DEBUG_DISABLED_WARNING" ] && [ "$DEBUG" -eq 0 ]; then
+    echo "[log] Warning: Setting DEBUG=0 disables all logging except for user messages"
+    echo "      Use a value beween 1 (fatal) and 5 (debug). The default level is 3 (warn)"
+    DEBUG_DISABLED_WARNING=1
+  elif [ "$DEBUG" -gt 5 ]; then
+    echo "[log] Warning: Assuming DEBUG maximum level of 5 (debug) over provided level $DEBUG"
+    DEBUG=5
+  fi
+
+  if [ "$level" = user ]; then
+    print_user_message "$message"
+  elif [ "$DEBUG" -ge 1 ] && [ "$level" = fatal ]; then
+    print_user_message "$message"
+  elif [ "$DEBUG" -ge 2 ] && [ "$level" = error ]; then
+    print_user_message "$message"
+  elif [  "$DEBUG" -ge 3 ] && [ "$level" = warn ]; then
+    print_user_message "$message"
+  elif [ "$DEBUG" -ge 4 ] && [ "$level" = info ]; then
+    print_debug_message "$message"
+  elif [ "$DEBUG" -ge 5 ] && [ "$level" = debug ]; then
+    print_debug_message "$message"
   fi
 }
 
@@ -21,7 +51,7 @@ set_opts() {
 
     if set -o | grep -q "^$opt[[:space:]]"; then
       set "${sign}o" "$opt"
-      log debug "[set_opts] Set: $(set -o | grep -q "^$opt[[:space:]]")"
+      log debug "[set_opts] Set: $(set -o | grep "^$opt[[:space:]]")"
     else
       log fatal "Unsupported shell: no $opt option support"
       return 1
diff --git a/tori b/tori
index 29a5efd..ac5c3ee 100755
--- a/tori
+++ b/tori
@@ -11,6 +11,7 @@ main() {
   # os-independent state
 
   DEBUG=$DEBUG
+  DEBUG_DISABLED_WARNING=
 
   ## user input
   argument="$1"