# 1.0.0-beta.20 Release Review

Scope: String Search And ASCII Trim Foundation

## Findings

No blocking findings.

The beta20 diff matches the documented release contract at the
release-blocking level. `lib/std/string.slo:1` exports all six new helpers, and
the implementations remain ordinary source helpers over the existing string
facade primitives: first search at `lib/std/string.slo:30`, last search at
`lib/std/string.slo:47`, `contains` at `lib/std/string.slo:64`, and ASCII trim
at `lib/std/string.slo:71`. The local mirror in
`examples/projects/std-layout-local-string/src/string.slo:1` exposes the same
surface without changing the public contract shape.

The example coverage is explicit and scoped correctly. The standard import
example covers present, missing, empty-needle, first/last index, leading trim,
trailing trim, full trim, all-whitespace trim, and no-trim cases at
`examples/projects/std-import-string/src/main.slo:204`; the documentation copy
matches at `docs/language/examples/projects/std-import-string/src/main.slo:204`;
the local fixture mirrors the same behavior at
`examples/projects/std-layout-local-string/src/main.slo:204`.

The compiler gate coverage is aligned with the non-scope. The focused beta20
test builds an explicit `std.string` import fixture at
`compiler/tests/standard_string_search_trim_beta20.rs:47`, asserts the helpers
are source-authored at `compiler/tests/standard_string_search_trim_beta20.rs:178`,
and rejects direct compiler-known runtime calls for the new names. The existing
local-string fallback test now expects and inventories the new helpers at
`compiler/tests/standard_string_source_fallback_helpers_alpha.rs:8` and
`compiler/tests/standard_string_source_fallback_helpers_alpha.rs:24`.
The repo-root standard-source import gate and promotion gate are also aligned at
`compiler/tests/standard_core_facade_source_search_alpha.rs:8`,
`compiler/tests/standard_core_facade_source_search_alpha.rs:33`,
`compiler/tests/promotion_gate.rs:1318`, and
`compiler/tests/promotion_gate.rs:7368`.

## Contract Drift

No blocking contract drift found.

The README, language release notes, language roadmap, v1 spec, compiler release
notes, compiler roadmap, post-beta roadmap, stdlib README, and beta20 `.llm`
contract all describe the same narrow surface: byte-oriented search, empty
needle behavior, ASCII-only trimming over bytes `9`, `10`, `11`, `12`, `13`,
and `32`, no new compiler-known runtime names, no runtime C work, no new source
syntax, and no Unicode, regex, tokenizer, mutable-string, stable ABI/layout, or
stable stdlib/API claims. Representative anchors: `README.md:144`,
`docs/language/RELEASE_NOTES.md:39`, `docs/language/ROADMAP.md:80`,
`docs/language/SPEC-v1.md:232`, `docs/compiler/RELEASE_NOTES.md:15`,
`docs/compiler/ROADMAP.md:100`, `docs/POST_BETA_ROADMAP.md:111`,
`lib/std/README.md:233`, and
`.llm/BETA_20_STRING_SEARCH_AND_ASCII_TRIM_FOUNDATION.md:1`.

The version and generated catalog updates are coherent: `compiler/Cargo.toml:3`
and `compiler/Cargo.lock` are bumped to `1.0.0-beta.20`,
`docs/language/STDLIB_API.md:18` reports 596 exported signatures, and
`docs/language/STDLIB_API.md:486` lists 36 `std.string` signatures including
the six beta20 helpers. `scripts/release-gate.sh:73` wires the focused beta20
test into the release gate.

## Verification Notes

Inspected:

- Working tree diff and untracked beta20 contract/test files for std source,
  explicit std/local examples, docs, compiler tests, generated catalog, version
  bump, and release-gate integration.
- Contract drift against README, language roadmap/spec/release notes, compiler
  roadmap/release notes, post-beta roadmap, stdlib README, and the beta20 `.llm`
  contract.
- Sibling `glagol` repository status; no sibling worktree changes were present.

Read-only checks run:

- `git diff --check` - passed.
- `git diff --cached --check` - passed.
- `bash -n scripts/release-gate.sh` - passed.
- `cargo fmt --check --manifest-path compiler/Cargo.toml` - passed.
- Local/private publication text scan over source/docs/tests/.llm with build
  artifacts excluded - passed.

Not run:

- Focused cargo tests, full `cargo test`, and `./scripts/release-gate.sh`.
  Those commands write build/generated artifacts, and this review was
  constrained to read-only commands except for the review file.

## Verdict

Release-ready from this review. No blocking beta20 issues remain in the current
working tree diff. The controller should still run the focused beta20 test stack
and full release gate before tagging.