fix evaluation script

conditional-variables/evaluate.sh

@@ -211,3 +211,45 @@ parse_rules() {
         line="$(trim "${line:-}")"
 
         [[ -z "$line" ]] && continue
+        [[ "$line" =~ ^# ]] && continue
+
+        case "$line" in
+            if:)
+                finalize_rule "$current_conditions" "$current_variables"
+
+                current_conditions=""
+                current_variables=""
+                mode="conditions"
+                ;;
+
+            set:)
+                mode="variables"
+                ;;
+
+            *)
+                case "$mode" in
+                    conditions)
+                        if [[ -n "$current_conditions" ]]; then
+                            current_conditions+=$'\n'
+                        fi
+                        current_conditions+="$line"
+                        ;;
+
+                    variables)
+                        if [[ -n "$current_variables" ]]; then
+                            current_variables+=$'\n'
+                        fi
+                        current_variables+="$line"
+                        ;;
+
+                    *)
+                        echo "Unexpected line outside of if:/set: block: $line"
+                        ;;
+                esac
+                ;;
+        esac
+
+    done <<< "${RULES:-}"
+
+    finalize_rule "$current_conditions" "$current_variables"
+}