wip(msgpack): handle Nil strings

.github/workflows/test.yml

@@ -11,6 +11,10 @@ on:
  - created
  - edited
 
+concurrency:
+ group: ${{ github.workflow }}-${{ github.ref }}
+ cancel-in-progress: true
+
 defaults:
  run:
  shell: bash
@@ -20,15 +24,17 @@ jobs:
  strategy:
  matrix:
  os:
- - ubuntu-22.04 # https://github.com/actions/runner-images/blob/main/images/linux/Ubuntu2204-Readme.md
- - macos-13 # https://github.com/actions/runner-images/blob/main/images/macos/macos-13-Readme.md
- - windows-2022 # https://github.com/actions/runner-images/blob/main/images/win/Windows2022-Readme.md
+ - ubuntu-24.04 # https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2404-Readme.md
+ - macos-15 # https://github.com/actions/runner-images/blob/main/images/macos/macos-15-Readme.md
+ - windows-2025 # https://github.com/actions/runner-images/blob/main/images/windows/Windows2025-Readme.md
  go-version:
- - 1.18.x
- - 1.19.x
- - 1.20.x
+ - 1.22.x
+ - 1.23.x
+ - 1.24.x
  neovim-version:
  - v0.9.1
+ - v0.10.4
+ - v0.11.0
  - nightly
  fail-fast: false
 
@@ -42,12 +48,12 @@ jobs:
  echo "NVIM_VERSION=$(if [ ${{ matrix.neovim-version }} != 'nightly' ]; then echo 'stable'; else echo 'nightly'; fi)" >> $GITHUB_ENV
 
  - name: Install Go
- uses: actions/setup-go@v3
+ uses: actions/setup-go@v5
  with:
  go-version: ${{ matrix.go-version }}
 
  - name: Checkout code
- uses: actions/checkout@v3
+ uses: actions/checkout@v4
 
  - name: Install neovim binary
  uses: rhysd/action-setup-vim@v1
@@ -59,8 +65,8 @@ jobs:
  run: |
  go test -race -count=1 -covermode=atomic -coverpkg=./... -coverprofile=coverage.out ./...
 
- - uses: codecov/codecov-action@v3
+ - uses: codecov/codecov-action@v5
  with:
- file: coverage.out
+ files: coverage.out
  flags: ${{ env.OS }}-${{ env.GO_VERSION }}-${{ env.NVIM_VERSION }}
  env_vars: OS,GO_VERSION,NVIM_VERSION

msgpack/decode.go

@@ -321,6 +321,8 @@ func stringDecoder(ds *decodeState, v reflect.Value) {
 var x string
 
 switch ds.Type() {
+case Nil:
+x = ""
 case Binary, String:
 x = ds.String()
 default:

msgpack/decode_test.go

@@ -964,6 +964,16 @@ func Test_stringDecoder(t *testing.T) {
 want string
 wantErr bool
 }{
+"Nil": {
+ds: &decodeState{
+Decoder: &Decoder{
+p: nil,
+t: Nil,
+},
+},
+want: string(""),
+wantErr: false,
+},
 "Binary": {
 ds: &decodeState{
 Decoder: &Decoder{