GeneralPawz · Oct 29, 2026 · Oct 29, 2026
diff --git a/Cargo.lock b/Cargo.lock
diff --git a/Cargo.toml b/Cargo.toml
@@ -31,7 +31,7 @@ openbim-ifc = { path = "crates/openbim-ifc", version = "0.39.0", default-feature
 openbim-ifc-binding-core = { path = "crates/openbim-ifc-binding-core", version = "0.1.0", default-features = false }
 ifc-step = { path = "crates/ifc-step", version = "0.6.0" }
 ifc-xml = { path = "crates/ifc-xml", version = "0.5.0" }
-ifc-model = { path = "crates/ifc-model", version = "0.4.3" }
+ifc-model = { path = "crates/ifc-model", version = "0.4.4" }
 ifc-geometry = { path = "crates/ifc-geometry", version = "0.32.0", default-features = false }
 ifc-properties = { path = "crates/ifc-properties", version = "0.10.0", default-features = false }
 ifc-template-catalog = { path = "crates/ifc-template-catalog", version = "0.4.0", default-features = false }

diff --git a/crates/ifc-model/CHANGELOG.md b/crates/ifc-model/CHANGELOG.md
@@ -12,6 +12,8 @@ everything released before per-crate changelogs began.
 
 ## [Unreleased]
 
+## [0.4.4] - 2026-10-29
+
 ### Fixed (#595)
 
 - `Model::set_attribute` and `Model::set_attributes` panic before any write
@@ -185,7 +187,8 @@ First release under per-crate versioning. See the
 [repository changelog](../../CHANGELOG.md) for the family-wide history
 that produced this version.
 
-[Unreleased]: https://github.com/openbimrs/ifc/compare/ifc-model-v0.4.3...HEAD
+[Unreleased]: https://github.com/openbimrs/ifc/compare/ifc-model-v0.4.4...HEAD
+[0.4.4]: https://github.com/openbimrs/ifc/releases/tag/ifc-model-v0.4.4
 [0.4.3]: https://github.com/openbimrs/ifc/releases/tag/ifc-model-v0.4.3
 [0.4.2]: https://github.com/openbimrs/ifc/releases/tag/ifc-model-v0.4.2
 [0.4.1]: https://github.com/openbimrs/ifc/releases/tag/ifc-model-v0.4.1

diff --git a/crates/ifc-model/Cargo.toml b/crates/ifc-model/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ifc-model"
-version = "0.4.3"
+version = "0.4.4"
 edition = "2021"
 rust-version = "1.99"
 license = "AGPL-3.0-or-later OR LicenseRef-Commercial"

diff --git a/crates/openbim-ifc/CHANGELOG.md b/crates/openbim-ifc/CHANGELOG.md
@@ -12,6 +12,8 @@ everything released before per-crate changelogs began.
 
 ## [Unreleased]
 
+## [0.39.3] - 2026-10-29
+
 ### Added (#595)
 
 - `Model::preview` (from `ifc-model` 0.4.4); the `authoring` bench measures it
@@ -1399,7 +1401,8 @@ First release under per-crate versioning. See the
 [repository changelog](../../CHANGELOG.md) for the family-wide history
 that produced this version.
 
-[Unreleased]: https://github.com/openbimrs/ifc/compare/openbim-ifc-v0.39.2...HEAD
+[Unreleased]: https://github.com/openbimrs/ifc/compare/openbim-ifc-v0.39.3...HEAD
+[0.39.3]: https://github.com/openbimrs/ifc/releases/tag/openbim-ifc-v0.39.3
 [0.39.2]: https://github.com/openbimrs/ifc/releases/tag/openbim-ifc-v0.39.2
 [0.39.1]: https://github.com/openbimrs/ifc/releases/tag/openbim-ifc-v0.39.1
 [0.39.0]: https://github.com/openbimrs/ifc/releases/tag/openbim-ifc-v0.39.0

diff --git a/crates/openbim-ifc/Cargo.toml b/crates/openbim-ifc/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "openbim-ifc"
-version = "0.39.2"
+version = "0.39.3"
 edition = "2021"
 rust-version = "1.99"
 license = "AGPL-3.0-or-later OR LicenseRef-Commercial"

diff --git a/docs/.vitepress/data/facts.json b/docs/.vitepress/data/facts.json
@@ -175,10 +175,10 @@
           "url": "https://crates.io/crates/ifc-model"
         }
       ],
-      "released": "0.4.3",
-      "released_date": "2026-10-28",
+      "released": "0.4.4",
+      "released_date": "2026-10-29",
       "status": "implemented",
-      "version": "0.4.3"
+      "version": "0.4.4"
     },
     "ifc-occurrence": {
       "description": "Built element and distribution occurrence classes and their type pairing.",
@@ -400,10 +400,10 @@
           "url": "https://crates.io/crates/openbim-ifc"
         }
       ],
-      "released": "0.39.2",
+      "released": "0.39.3",
       "released_date": "2026-10-29",
       "status": "implemented",
-      "version": "0.39.2"
+      "version": "0.39.3"
     },
     "openbim-ifc-binding-core": {
       "description": "Host-independent core shared by the openbim-ifc language bindings (WebAssembly, C ABI, Python).",

diff --git a/docs/guide/install.md b/docs/guide/install.md
@@ -8,7 +8,7 @@ one reads the same in the others.
 
 | Language | Package | Latest release | Install | Requires | Reference |
 | --- | --- | --- | --- | --- | --- |
-| Rust | [`openbim-ifc`](https://crates.io/crates/openbim-ifc) | 0.39.2 (2026-10-29) | `cargo add openbim-ifc` | Rust `1.99.0` | [`openbim-ifc`](/reference/crates/openbim-ifc) |
+| Rust | [`openbim-ifc`](https://crates.io/crates/openbim-ifc) | 0.39.3 (2026-10-29) | `cargo add openbim-ifc` | Rust `1.99.0` | [`openbim-ifc`](/reference/crates/openbim-ifc) |
 | JavaScript / TypeScript | [`@openbim/ifc`](https://www.npmjs.com/package/@openbim/ifc) | 0.15.0 (2026-10-28) | `npm install @openbim/ifc` | Node `>=18` | [`openbim-ifc-wasm`](/reference/crates/openbim-ifc-wasm) |
 | Python | [`openbim-ifc`](https://pypi.org/project/openbim-ifc/) | 0.15.0 (2026-10-28) | `pip install openbim-ifc` | Python `>=3.9` | [`openbim-ifc-py`](/reference/crates/openbim-ifc-py) |
 | C / C++ | [`openbim_ifc`](https://github.com/openbimrs/ifc/releases/tag/openbim-ifc-capi-v0.1.20) (CMake, prebuilt archives) | 0.1.20 (2026-10-28) | `find_package(openbim_ifc)` | a C11 or C++17 compiler and CMake 3.21; Rust to build from source | [`openbim-ifc-capi`](/reference/crates/openbim-ifc-capi) |

diff --git a/docs/reference/crates/ifc-model.md b/docs/reference/crates/ifc-model.md
@@ -11,7 +11,7 @@ The IFC entity graph: storage and structural queries, free of domain semantics a
 | | |
 | --- | --- |
 | Status | <span class="status-implemented">Implemented</span> |
-| Latest release | 0.4.3 (2026-10-28) |
+| Latest release | 0.4.4 (2026-10-29) |
 | Registries | [crates.io `ifc-model`](https://crates.io/crates/ifc-model) |
 | API documentation | [rustdoc](/api/rustdoc/ifc_model/index.html){target="_self"} · [docs.rs](https://docs.rs/ifc-model) |
 | Source | [`crates/ifc-model/`](https://github.com/openbimrs/ifc/tree/main/crates/ifc-model) |
@@ -29,25 +29,20 @@ serialization.
 
 ## Changes
 
-Latest release, 0.4.3 (2026-10-28):
+Latest release, 0.4.4 (2026-10-29):
 
-### Added (#587)
+### Fixed (#595)
 
-- `Model::reverse_index`: the reverse index, built on the first call and kept
-  current by every write, undo and redo after that; equal to
-  `ReverseIndex::build` at every moment.
-- `Model::global_id_candidates`: the entities whose first attribute is the
-  text of a `Guid`, ascending by id, kept the same way.
-- `Model::drop_derived_indexes`, to free both.
-- `PartialEq` and `Eq` on `ReverseIndex`.
+- `Model::set_attribute` and `Model::set_attributes` panic before any write
+  for an attribute index of `usize::MAX`, instead of wrapping in release builds
+  and truncating the entity, or leaving the first edits of a batch unrecorded.
 
-### Changed (#587)
+### Added (#595)
 
-- `Transaction::preflight` reads the model's own reverse index when something
-  built it, instead of scanning the model for a commit that removes.
-- Undoing a batch is linear in the batch: file order and type buckets are
-  searched from the end.
-
-Semver: minor.
+- `Model::preview` runs a change and rolls it back exactly, the revision
+  included: entities, orders, header, next free id, diagnostics and the
+  maintained indexes are put back, and a `History`, `Transaction` or `Inverse`
+  made before it stays valid. Revisions drawn inside are never reissued.
+  Semver: minor (additive).
 
 Full history: [`crates/ifc-model/CHANGELOG.md`](https://github.com/openbimrs/ifc/blob/main/crates/ifc-model/CHANGELOG.md)
diff --git a/docs/reference/crates/openbim-ifc.md b/docs/reference/crates/openbim-ifc.md
@@ -11,7 +11,7 @@ Facade for the openBIM IFC crates: pick codecs and domains as features.
 | | |
 | --- | --- |
 | Status | <span class="status-implemented">Implemented</span> |
-| Latest release | 0.39.2 (2026-10-29) |
+| Latest release | 0.39.3 (2026-10-29) |
 | Registries | [crates.io `openbim-ifc`](https://crates.io/crates/openbim-ifc) |
 | API documentation | [rustdoc](/api/rustdoc/ifc/index.html){target="_self"} · [docs.rs](https://docs.rs/openbim-ifc) |
 | Source | [`crates/openbim-ifc/`](https://github.com/openbimrs/ifc/tree/main/crates/openbim-ifc) |
@@ -103,17 +103,11 @@ Facade for the openBIM IFC crates: pick codecs and domains as features.
 
 ## Changes
 
-Latest release, 0.39.2 (2026-10-29):
+Latest release, 0.39.3 (2026-10-29):
 
-### Fixed (#596)
+### Added (#595)
 
-- A layer, profile or constituent set, or an IFC2X3 `IfcMaterialList`,
-  naming several materials no longer refuses the product before looking at
-  them: with no styled material it has no colour, with all styled
-  materials agreeing on rgb and transparency it takes that colour, and
-  anything else (differing styles, or a mix of styled and unstyled
-  materials) is `ColourError::AmbiguousMaterial`.
-
-Semver: patch.
+- `Model::preview` (from `ifc-model` 0.4.4); the `authoring` bench measures it
+  against a clone.
 
 Full history: [`crates/openbim-ifc/CHANGELOG.md`](https://github.com/openbimrs/ifc/blob/main/crates/openbim-ifc/CHANGELOG.md)
diff --git a/docs/reference/index.md b/docs/reference/index.md
@@ -10,14 +10,14 @@ Every page here is generated from the crate itself: its manifest, its crate docu
 
 | Crate | Status | Latest release | Description |
 | --- | --- | --- | --- |
-| [`openbim-ifc`](./crates/openbim-ifc) | <span class="status-implemented">Implemented</span> | 0.39.2 | Facade for the openBIM IFC crates: pick codecs and domains as features. |
+| [`openbim-ifc`](./crates/openbim-ifc) | <span class="status-implemented">Implemented</span> | 0.39.3 | Facade for the openBIM IFC crates: pick codecs and domains as features. |
 
 ## Model, codecs, schema, authoring and validation
 
 | Crate | Status | Latest release | Description |
 | --- | --- | --- | --- |
 | [`ifc-author`](./crates/ifc-author) | <span class="status-implemented">Implemented</span> | 0.4.2 | Schema-checked IFC authoring: construct entities by attribute name with arity and type validation. |
-| [`ifc-model`](./crates/ifc-model) | <span class="status-implemented">Implemented</span> | 0.4.3 | The IFC entity graph: storage and structural queries, free of domain semantics and serialization. |
+| [`ifc-model`](./crates/ifc-model) | <span class="status-implemented">Implemented</span> | 0.4.4 | The IFC entity graph: storage and structural queries, free of domain semantics and serialization. |
 | [`ifc-schema`](./crates/ifc-schema) | <span class="status-implemented">Implemented</span> | 0.3.5 | IFC schema as data: entity table, supertype chain, attribute names. |
 | [`ifc-step`](./crates/ifc-step) | <span class="status-implemented">Implemented</span> | 0.6.2 | STEP physical file (ISO 10303-21) codec for the IFC model. |
 | [`ifc-validate`](./crates/ifc-validate) | <span class="status-implemented">Implemented</span> | 0.8.2 | Schema conformance: WHERE rules, cardinality, GUID and reference integrity. |