[wan9chi]

Motivation

Later PRs in this stack test clean checkouts, which remove several inputs at once. vt reports whichever mismatch its parallel validation finds first, so the step's cache miss: … line changes from run to run. Making vt compute every mismatch only to stabilize tests isn't worth it, so a step needs its own redaction.

Changes

A table step takes redact, a map from regex to replacement, applied in key order to that step's output after the global redactions. An invalid regex fails when the fixtures load. step_redact shows that a step's patterns touch only its own output.

Part of a stack that lets automatic tracking cache tasks which read their own outputs and list the folders holding them, so they also hit on a clean checkout.

🤖 Generated with Claude Code

[github-actions]

fspy benchmark

linux

dynamic/launch             change  -0.72%  [ -6.24% ..  +5.77%]  overhead   +59.55%
dynamic/access             change  -0.34%  [ -5.31% ..  +6.70%]  overhead   +24.21%
dynamic/access-relative    change  -3.18%  [-17.93% ..  +2.90%]  overhead   +71.18%
dynamic/access-contended   change  -1.20%  [ -5.34% ..  +6.61%]  overhead   +25.13%
static/launch              change  +0.49%  [ -5.05% ..  +6.76%]  overhead  +184.86%
static/access              change  +0.53%  [ -2.00% ..  +8.16%]  overhead +1457.79%
static/access-relative     change  -0.29%  [ -2.16% ..  +1.86%]  overhead +1964.59%
static/access-contended    change  -0.54%  [ -4.49% ..  +1.21%]  overhead +1722.36%

macos

dynamic/launch             change  +0.35%  [ -5.29% ..  +4.88%]  overhead  +240.74%
dynamic/access             change  -0.35%  [ -7.61% ..  +8.51%]  overhead    +2.79%
dynamic/access-relative    change  -0.10%  [ -7.96% ..  +4.28%]  overhead  +269.30%
dynamic/access-contended   change  +2.89%  [ -6.62% .. +35.49%]  overhead    +5.27%

windows

dynamic/launch             change  -0.86%  [ -4.18% ..  +2.62%]  overhead   +24.91%
dynamic/access             change  +0.00%  [ -0.55% ..  +0.73%]  overhead    +1.51%
dynamic/access-relative    change  +0.18%  [ -0.54% ..  +0.72%]  overhead    +1.45%
dynamic/access-contended   change  +0.17%  [ -2.53% ..  +1.59%]  overhead    +1.24%