The ArcanistTextLinter currently only permits ASCII characters, and this one linter feature can't be turned off. This makes it impossible to get the other benefits of the TextLinter and still be able to do things like put things like UTF8-based diagrams in a text document. It would be nice to be able to use UTF8 Letters, Marks, Numbers, Punctuation and Symbols in documents linted with the ArcanistTextLinter.
An example of such a diagram would be a file system diagram describing the repo or other feature of the repository. e.g.:
├── foo ├── bar └── baz
Would a diff for this simple feature be accepted? If so, I submitted one here: D16085