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#655 landed: the ledger, the sandbox table, and the closure
The implementation plan and the triage record move to landed. The ledger closes every row with its reading: #657 merged as f1043b7, release 2026.9.17.1 mirrored byte for byte to GitHub and GitCode, index #854 published, the SubOS sandbox with CN mirrors at fails=0 against a control of fails=10, and the post-release fresh install on macOS 27 running mcpp new and run and building mcpp from source.
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.agents/docs/2026-09-17-655-arguments-are-not-the-command-the-build-runs.md

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subject: triage
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status: active
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status: landed
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# #655: the `arguments` array is not the command the build runs
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**Status:** landed in mcpp 2026.9.17.1 (#657); the closure is `2026-09-17-655-implementation-plan.md` §7.
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**Revision 2026-09-17 (before implementation).** §3 proposed that the
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database adopt each host's own reading (C1) and that defines be tagged at
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ingestion (C2). The maintainer asked for the option with the best cross-platform

.agents/docs/2026-09-17-655-implementation-plan.md

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subject: triage
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status: landed
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# #655 implemented: one reading of a compile-flag element, the plan, and the ledger
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| id | task | depends on | status |
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|---|---|---|---|
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| E1 | `mcpp.manifest.flag_words`: `flag_words`, `flag_element`, `host_command_words` | - | branch: `FlagWords.*` 6/6 |
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| E2 | every define push site spells one word (`[build]`, globs, targets, features, `mcpp:cfg=`) | E1 | branch: e2e 736 `V_DEF=["def"]` |
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| E3 | compile edges write words quoted for the host; link edges keep the rendered text | E1 | branch: e2e 307, 615, 736 |
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| E4 | databases list words; `split_flags` = ninja unescape + host reader; GAS units list their edge's list | E1 | branch: `CompileCommandsArgs.*`, `BuildDatabase.*` |
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| E5 | include normalisation, the `-std` guard, dialect promotion and the std module's target-side flags read words | E1 | branch: build and e2e subset |
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| E6 | Windows `shell_quote_arg` follows the MSVCRT backslash rule | - | branch: round trip on the Windows runner |
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| E7 | `build/flag-words` note on the first plan | E1 | branch: e2e 736 D and E |
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| E8 | SPEC-004 §8, SPEC-005 R3.7, docs/04 and docs/30 with their Chinese mirrors, CHANGELOG | E1-E7 | branch |
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| E9 | version 2026.9.17.1 | - | branch |
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| E10 | CI green on every workflow of the pull request | E1-E9, E11 | branch: `e90674fb` 12/12 runs green (macOS 27 unit 121/121, macOS 27 e2e 182 passed 0 failed, Windows unit and e2e) |
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| E11 | macOS 27 legs and the macOS 27 std module fix (maintainer request, 2026-09-17; §5.1, §5.2): `ci-macos` and `ci-macos-e2e` run on `macos-15` and macOS 27; `ci-fresh-install` runs its xlings and Homebrew channels on `macos-14` and macOS 27; each macOS 27 leg asserts `sw_vers` major 27 | - | branch |
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| E1 | `mcpp.manifest.flag_words`: `flag_words`, `flag_element`, `host_command_words` | - | done (#657): `FlagWords.*` 6/6 |
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| E2 | every define push site spells one word (`[build]`, globs, targets, features, `mcpp:cfg=`) | E1 | done (#657): e2e 736 `V_DEF=["def"]` |
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| E3 | compile edges write words quoted for the host; link edges keep the rendered text | E1 | done (#657): e2e 307, 615, 736 |
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| E4 | databases list words; `split_flags` = ninja unescape + host reader; GAS units list their edge's list | E1 | done (#657): `CompileCommandsArgs.*`, `BuildDatabase.*` |
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| E5 | include normalisation, the `-std` guard, dialect promotion and the std module's target-side flags read words | E1 | done (#657): build and e2e subset |
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| E6 | Windows `shell_quote_arg` follows the MSVCRT backslash rule | - | done (#657): round trip on the Windows runner |
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| E7 | `build/flag-words` note on the first plan | E1 | done (#657): e2e 736 D and E |
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| E8 | SPEC-004 §8, SPEC-005 R3.7, docs/04 and docs/30 with their Chinese mirrors, CHANGELOG | E1-E7 | done (#657)|
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| E9 | version 2026.9.17.1 | - | done (#657)|
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| E10 | CI green on every workflow of the pull request | E1-E9, E11 | done (#657): `e90674fb` 12/12 runs green (macOS 27 unit 121/121, macOS 27 e2e 182 passed 0 failed, Windows unit and e2e) |
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| E11 | macOS 27 legs and the macOS 27 std module fix (maintainer request, 2026-09-17; §5.1, §5.2): `ci-macos` and `ci-macos-e2e` run on `macos-15` and macOS 27; `ci-fresh-install` runs its xlings and Homebrew channels on `macos-14` and macOS 27; each macOS 27 leg asserts `sw_vers` major 27 | - | done (#657)|
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### 3.2 Release and ecosystem, in order
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| id | task | depends on | status |
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|---|---|---|---|
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| R1 | merge the engine pull request; verify the `origin/main` run | E10 | todo |
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| R2 | dispatch `release.yml`; upload each archive to GitCode with the local `gtc` as it appears | R1 | todo |
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| R3 | merge the xim-pkgindex bump; read the index artifact, not git | R2 | todo |
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| R4 | bootstrap pin 2026.9.17.1 (pull request) | R3 | todo |
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| R5 | sandbox verification with CN mirrors (§6) | R3 | todo |
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| R6 | reply on #655; close #656 | R5 | todo |
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| R1 | merge the engine pull request; verify the `origin/main` run | E10 | done: #657 merged as `f1043b78`; 10 of 10 push workflows green on `f1043b78` |
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| R2 | dispatch `release.yml`; upload each archive to GitCode with the local `gtc` as it appears | R1 | done: release run 35153200320 green, tag `v2026.9.17.1` at `f1043b78`; the four archives uploaded to GitCode from this host as each appeared, each GET 200 and byte-identical to the GitHub asset |
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| R3 | merge the xim-pkgindex bump; read the index artifact, not git | R2 | done: openxlings/xim-pkgindex#854 (+22/-3, four sha256 equal to the downloaded archives, 16 of 16 checks) merged as `21dccfb`; the published artifact `xim-index-21dccfb` tracks 2026.9.17.1 |
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| R4 | bootstrap pin 2026.9.17.1 (pull request) | R3 | done: #661 (this record's closure rides on it) |
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| R5 | sandbox verification with CN mirrors (§6) | R3 | done: `version=2026.9.17.1 fails=0`, no section skipped; control 2026.9.16.2 `fails=10` |
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| R6 | reply on #655; close #656 | R5 | done: #655 answered (comment 5705170602); probes #656, #658, #659 closed with their readings |
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No change is needed in mcpplibs/mcpp-index (§4 K6), in mcpp-plugins (no flag
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list) or in openxlings/xlings (its manifest pins an older engine and carries no
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## 6. Sandbox verification
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Recorded after the release in §7.
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`2026-09-17-655-verify.sh` runs inside `xlings subos use v655 --sandbox` with
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the CN mirror set for xlings and for mcpp, against the published binary addressed
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by its store path. Sections marked CHANGE must fail on the previous release and
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pass on this one; sections marked GUARD must pass on both.
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| section | 2026.9.16.2 (control) | 2026.9.17.1 |
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|---|---|---|
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| A GUARD: version and CN mirrors | ok | ok |
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| B CHANGE: the issue's five macros, build against database | 6 fails: the database's arguments exit 1, `ESC \"esc.h\"` | ok: identical, rc 0 |
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| C CHANGE: e2e 736 on the published binary | fails at `V_DOL=[a$b]` | ok |
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| D CHANGE: compat.libarchive consumer and its database | fails: the unit reads `'#include' expects "FILENAME"` | ok: runs `libarchive 3.8.7`; the unit executes |
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| D GUARD: no `build/flag-words` note for published descriptors | ok | ok |
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| E GUARD: compat.lua consumer (packed `-include`) | ok: `lua=42` | ok: `lua=42` |
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| F CHANGE: openxlings/xlings `5c52a16` build database | fails: `-DPLATFORM_CONFIG_H=\\"..\\"` | ok: the define is unescaped; the libarchive unit executes from the database |
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| summary | `fails=10` | `fails=0`, nothing skipped |
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## 7. Readings and closure
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Recorded as each row closes.
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- The engine change, the macOS 27 fix and the CI legs landed in one pull request,
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#657; after the last review commit every workflow was green, 12 of 12.
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- Release 2026.9.17.1: four archives on GitHub and GitCode, byte-identical; index
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bump merged and published; bootstrap pin in #661.
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- The post-release fresh-install run (35154678676) installs the release on every
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row. Its Homebrew leg on macOS 27 ran before the tap carried 2026.9.17.1 and
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installed 2026.9.16.2, which failed at the std module exactly as §5.2 describes;
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that leg is re-run against the bumped formula. The xlings leg on macOS 27
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installs 2026.9.17.1 fresh, runs `mcpp new` then `mcpp run` (`Hello from
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hello_mac!`), resolves a template package, and builds mcpp from source: the
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released fix measured on the system it is for, with nothing wrapped.
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- No change was needed in mcpplibs/mcpp-index, mcpp-plugins or openxlings/xlings.
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## 5.1 macOS 27 on GitHub-hosted runners
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.agents/docs/README.md

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### triage
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- [#655 implemented: one reading of a compile-flag element, the plan, and the ledger](2026-09-17-655-implementation-plan.md)active
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- [#655: the `arguments` array is not the command the build runs](2026-09-17-655-arguments-are-not-the-command-the-build-runs.md)active
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- [#655 implemented: one reading of a compile-flag element, the plan, and the ledger](2026-09-17-655-implementation-plan.md)landed
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- [#655: the `arguments` array is not the command the build runs](2026-09-17-655-arguments-are-not-the-command-the-build-runs.md)landed
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- [#646 to #649 implemented: the plan, its review from eight angles, and the ledger](2026-09-16-646-649-implementation-plan.md) — landed
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- [Four issues from a framework and an editor: #646, #647, #648 and #649, read against the engine and routed by home](2026-09-16-646-649-four-issues-by-home.md) — landed
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- [Link forms, standard levels and a path limit: the asks of #641 and #642, read against the code](2026-09-15-641-642-link-forms-standards-and-paths.md) — landed
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### 2026-09
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- [#655 implemented: one reading of a compile-flag element, the plan, and the ledger](2026-09-17-655-implementation-plan.md)active
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- [#655: the `arguments` array is not the command the build runs](2026-09-17-655-arguments-are-not-the-command-the-build-runs.md)active
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- [#655 implemented: one reading of a compile-flag element, the plan, and the ledger](2026-09-17-655-implementation-plan.md)landed
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- [#655: the `arguments` array is not the command the build runs](2026-09-17-655-arguments-are-not-the-command-the-build-runs.md)landed
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- [#646 to #649 implemented: the plan, its review from eight angles, and the ledger](2026-09-16-646-649-implementation-plan.md) — landed
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- [Four issues from a framework and an editor: #646, #647, #648 and #649, read against the engine and routed by home](2026-09-16-646-649-four-issues-by-home.md) — landed
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- [Link forms, standard levels and a path limit: the asks of #641 and #642, read against the code](2026-09-15-641-642-link-forms-standards-and-paths.md) — landed

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