How to search for characters in the document, such as ?

[Leopard20]

In my documentations I'd like to search for characters such as . and ?. But when I type those characters in the search bar no results are returned.
Is it possible to enable this somehow?

[squidfunk]

I can search for ? on our documentation. As always, I'm going to need a fully self-contained minimal reproducible example to look into this. You can attach it here as a zip file. Otherwise, I can only guess what's wrong with your configuration.

[Leopard20]

Thanks for the reply.

It happens with the basic setup too (I simply ran mkdocs new test and updated mkdocs.yml to add the material theme)
test.zip

This is my mkdocs.yml:

site_name: My Docs
theme:
  name: material
  palette:
    # Palette toggle for light mode
    - scheme: default
      toggle:
        icon: material/brightness-7 
        name: Switch to dark mode

    # Palette toggle for dark mode
    - scheme: slate
      toggle:
        icon: material/brightness-4
        name: Switch to light mode

markdown_extensions:
  - pymdownx.highlight:
      use_pygments: true
  - pymdownx.superfences

plugins:
  - search

And index.md:

# Welcome to MkDocs

For full documentation visit [mkdocs.org](https://www.mkdocs.org).

## Commands

* `mkdocs new [dir-name]` - Create a new project.
* `mkdocs serve` - Start the live-reloading docs server.
* `mkdocs build` - Build the documentation site.
* `mkdocs -h` - Print help message and exit.

`???`

## Project layout ?

  mkdocs.yml    # The configuration file.
  docs/
      index.md  # The documentation homepage.
      ...       # Other markdown pages, images and other files.

Here's a screenshot:

[squidfunk]

I can confirm, it doesn't work with the legacy search implementation, which has severe limitations when it comes to tokenization and indexing. This is also the reason why I've rewritten search from scratch to support advanced tokenization, etc. It's currently only available to sponsors as part of Insiders. You can read about it in: Search: better, faster, smaller