Set up spell checking in PRs

.github/workflows/cspell.yaml

@@ -0,0 +1,65 @@
+name: 'Check spelling'
+on:
+  # Don't enable in PRs just yet until we've built a sane wordlist
+  # pull_request: {}
+  # push:
+  #   branches: [ main ]
+  workflow_dispatch: {}
+
+jobs:
+  spellcheck:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: streetsidesoftware/cspell-action@v6
+        with:
+          # Define glob patterns to filter the files to be checked. Use a new line between patterns to define multiple patterns.
+          # The default is to check ALL files that were changed in in the pull_request or push.
+          # Note: `ignorePaths` defined in cspell.json still apply.
+          # Example:
+          # files: |
+          #   **/*.{ts,js}
+          #   !dist/**/*.{ts,js}
+          #
+          # Default: ALL files
+          files: ''
+
+          # Check files and directories starting with `.`.
+          # - "true" - glob searches will match against `.dot` files.
+          # - "false" - `.dot` files will NOT be checked.
+          # - "explicit" - glob patterns can match explicit `.dot` patterns.
+          check_dot_files: explicit
+
+          # The point in the directory tree to start spell checking.
+          # Default: .
+          root: '.'
+
+          # Notification level to use with inline reporting of spelling errors.
+          # Allowed values are: warning, error, none
+          # Default: warning
+          inline: warning
+
+          # Reports flagged / forbidden words as errors.
+          # If true, errors will still be reported even if `inline` is "none"
+          treat_flagged_words_as_errors: false
+
+          # Generate Spelling suggestions.
+          suggestions: false
+
+          # Determines if the action should be failed if any spelling issues are found.
+          # Allowed values are: true, false
+          # Default: true
+          strict: false
+
+          # Limit the files checked to the ones in the pull request or push.
+          incremental_files_only: ${{ github.event_name != 'workflow_dispatch' }}
+
+          # Path to `cspell.json`
+          config: 'cspell.json'
+
+          # Log progress and other information during the action execution.
+          # Default: false
+          verbose: false
+
+          # Use the `files` setting found in the CSpell configuration instead of `input.files`.
+          use_cspell_files: false

cspell.json

@@ -0,0 +1,15 @@
+{
+    "version": "0.2",
+    "$schema": "https://raw.githubusercontent.com/streetsidesoftware/cspell/main/cspell.schema.json",
+    "enableGlobDot": true,
+    "words": [],
+    "useGitignore": true,
+    "ignorePaths": [
+        ".git/*",
+        ".git/!{COMMIT_EDITMSG,EDITMSG}",
+        ".git/*/**",
+        "cspell.json",
+    ],
+    "overrides": [],
+    "enableFiletypes": []
+}