my-pi/pi-permission-system/docs/retro/0122-question-mark-wildcard.md

issue, issue_title

issue	issue_title
122	Support `?` single-character wildcard in permission patterns

Retro: #122 — Support ? single-character wildcard in permission patterns

Final Retrospective (2026-05-08T17:18:00-07:00)

Session summary

Planned, implemented, shipped, and released (v5.14.0) support for the ? single-character wildcard in permission patterns. The implementation was a one-line change in compileWildcardPattern (replace escaped \? → . after escapeRegExp), 8 new tests, and doc updates to configuration.md and opencode-compatibility.md. Three TDD commits landed exactly as planned with no rework or deviations.

Observations

What went well

• Clean three-phase execution (plan → TDD → ship) with zero rework or user corrections.
• Issue #123 (trailing wildcard optionality) served as a near-identical template — same module, same test structure, same TDD rhythm — confirming wildcard-matcher.ts is well-factored for incremental wildcard features.
• The plan correctly identified the change as purely additive with no permission regression risk, which held true throughout implementation.

What caused friction (agent side)

• No friction observed.

What caused friction (user side)

• No friction observed.