regex-tools/docs/EXECUTION_TRACES.md

Execution traces

Version 0.1.0 exposes no execution trace.

Browser ECMAScript APIs return compilation, match, capture and replacement results but not the runtime's internal backtracking events. Regex Tools does not label structural explanations, static hints or adjacent-result inference as an actual engine trace.

The next PCRE2 slice will use actual automatic/explicit callout events from an application-owned bridge. Event count, serialized bytes, match/depth/heap limits and wall-clock termination must all be enforced. Classifications such as “apparent backtrack” will remain visibly derived from adjacent events.