Exercise bash and powershell completion in ci (WIP)

.github/workflows/ci.yml

@@ -207,6 +207,13 @@ jobs:
           $uv venv
           $uv pip install ruff
 
+      - name: "Test completion"
+        run: |
+          uv="./target/debug/uv"
+          uvx="./target/debug/uvx"
+          eval "$($uv generate-shell-completion bash)"
+          eval "$($uvx --generate-shell-completion bash)"
+
   cargo-test-macos:
     timeout-minutes: 10
     needs: determine_changes
@@ -285,6 +292,20 @@ jobs:
         working-directory: ${{ env.UV_WORKSPACE }}
         run: rustup show
 
+      - name: "Test completion"
+        shell: powershell
+        run: |
+          Set-Alias -Name uv -Value ./target/debug/uv
+          Set-Alias -Name uvx -Value ./target/debug/uvx
+          (& $uv generate-shell-completion powershell) | Out-String | Invoke-Expression
+          (& $uvx --generate-shell-completion powershell) | Out-String | Invoke-Expression
+
+      - name: "Test completion"
+        shell: bash -e
+        run: |
+          false # stop early
+
+
       - name: "Install cargo nextest"
         uses: taiki-e/install-action@v2
         with: