ci: bump action and tool pins, add Lua 5.5 to the test matrix

.github/workflows/build.yml

@@ -15,26 +15,26 @@ jobs:
     runs-on: ubuntu-26.04
     name: Check
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Setup Lua
-        uses: leafo/gh-actions-lua@v11
+        uses: leafo/gh-actions-lua@v13
         with:
           luaVersion: '5.4'
 
       - name: Setup LuaRocks
-        uses: leafo/gh-actions-luarocks@v5
+        uses: leafo/gh-actions-luarocks@v6
         with:
-          luarocksVersion: "3.12.2"
+          luarocksVersion: "3.13.0"
 
       - name: Install luacheck
         run: luarocks install luacheck
 
       - name: Install stylua
-        uses: JohnnyMorganz/stylua-action@v4
+        uses: JohnnyMorganz/stylua-action@v5
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
-          version: v2.1.0
+          version: v2.6.0
           args: false # Will be run as part of `make check`
 
       - name: Install lua-language-server
@@ -43,7 +43,7 @@ jobs:
             | tar -xz -C "$RUNNER_TEMP"
           echo "$RUNNER_TEMP/bin" >> "$GITHUB_PATH"
         env:
-          LUALS: 3.19.0
+          LUALS: 3.19.2
 
       - name: Check
         run: make check
@@ -55,14 +55,14 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        lua-version: ['5.1', '5.2', '5.3', '5.4', 'luajit-2.0', 'luajit-2.1']
+        lua-version: ['5.1', '5.2', '5.3', '5.4', '5.5', 'luajit-2.0', 'luajit-2.1']
 
     name: Lua ${{ matrix.lua-version }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Setup Lua
-        uses: leafo/gh-actions-lua@v11
+        uses: leafo/gh-actions-lua@v13
         with:
           luaVersion: ${{ matrix.lua-version }}
 
@@ -87,17 +87,17 @@ jobs:
     runs-on: ubuntu-26.04
     name: Build Combined Module
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Setup Lua
-        uses: leafo/gh-actions-lua@v11
+        uses: leafo/gh-actions-lua@v13
         with:
           luaVersion: '5.4'
 
       - name: Setup LuaRocks
-        uses: leafo/gh-actions-luarocks@v5
+        uses: leafo/gh-actions-luarocks@v6
         with:
-          luarocksVersion: "3.12.2"
+          luarocksVersion: "3.13.0"
 
       - name: Install amalg
         run: luarocks install amalg
@@ -123,7 +123,7 @@ jobs:
           fi
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: bitn.lua
           path: build/bitn.lua

.github/workflows/release.yml

@@ -13,19 +13,19 @@ jobs:
     runs-on: ubuntu-26.04
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           fetch-depth: 0
 
       - name: Setup Lua
-        uses: leafo/gh-actions-lua@v11
+        uses: leafo/gh-actions-lua@v13
         with:
           luaVersion: '5.4'
 
       - name: Setup LuaRocks
-        uses: leafo/gh-actions-luarocks@v5
+        uses: leafo/gh-actions-luarocks@v6
         with:
-          luarocksVersion: "3.12.2"
+          luarocksVersion: "3.13.0"
 
       - name: Install amalg
         run: luarocks install amalg
@@ -36,7 +36,7 @@ jobs:
           make build
 
       - name: Create Release
-        uses: softprops/action-gh-release@v1
+        uses: softprops/action-gh-release@v3
         with:
           draft: false
           prerelease: ${{ contains(github.ref_name, '-rc') || contains(github.ref_name, '-beta') || contains(github.ref_name, '-alpha') }}

CLAUDE.md

@@ -124,7 +124,7 @@ local `.luarc.json`. Re-run both enumerations when upgrading the server rather t
 assuming this list stayed complete.
 
 The server version is not pinned locally, though. `install-deps` takes whatever
-Homebrew has while CI pins 3.19.0, so compare the version the target prints if a
+Homebrew has while CI pins 3.19.2, so compare the version the target prints if a
 local result disagrees with CI.
 
 Part of `check`, so CI enforces it.
@@ -211,8 +211,8 @@ make test-matrix        # across Lua versions
 ```
 
 `make test-matrix` pins luaenv `5.1.5 5.2.4 5.3.6 5.4.8 luajit-2.1-dev` locally.
-CI additionally covers **LuaJIT 2.0**, so a green local matrix is a weaker signal
-than a green CI one.
+CI additionally covers **Lua 5.5** and **LuaJIT 2.0**, so a green local matrix is
+a weaker signal than a green CI one.
 
 ## Benchmarking
 
@@ -241,8 +241,8 @@ Version is injected from git tags during release.
 
 - **build.yml** (workflow name `Lua Tests`): on push/PR to `main` or `master`.
   - `check` job — `make check`, i.e. stylua format check, luacheck, and typecheck
-    against lua-language-server 3.19.0.
-  - `test` job — `make test-all` across Lua 5.1-5.4 and LuaJIT 2.0/2.1.
+    against lua-language-server 3.19.2.
+  - `test` job — `make test-all` across Lua 5.1-5.5 and LuaJIT 2.0/2.1.
   - `build` job — single-file distribution.
 
 - **release.yml**: on version tags (`v*`) — builds and publishes a release with the

README.md

@@ -2,7 +2,8 @@
 
 A portable bitwise operations library for 16-bit, 32-bit, and 64-bit integers
 with **zero external dependencies**. This library provides a complete,
-cross-platform implementation that runs on Lua 5.1, 5.2, 5.3, 5.4, and LuaJIT.
+cross-platform implementation that runs on Lua 5.1, 5.2, 5.3, 5.4, 5.5, and
+LuaJIT.
 
 ## Features