Pygments Ashen

This repository contains the Pygments style plugin for the Ashen theme. Available as the pygments-ashen package on PyPI for use in your Python projects, or with the Pygments CLI tool. The actual name of the style within pygments is ashen.

How To Use

The following shows how to use the style with uv, which is currently the cleanest way to manage Python projects and libraries. You may, of course, install the package into a virtual environment with pip, if you wish:

pip install pygments-ashen

Pygments CLI

Third-party Pygments styles are Python packages that must be available in the environment pygments is running in. For example, you can use uv to create a one-off environment for a single command:

uv run --with 'pygments-ashen,pygments' \
pygmentize -O full,style=ashen \
-l python -f html foobar.py > foobar.html

The above command invokes pygmentize with the pygments-ashen and pygments dependencies available, and renders the file foobar.py in HTML format with the Ashen theme applied.

In Your Projects

If your project uses Pygments for code highlighting, you can easily add support for Ashen. The pygments-ashen package must be installed in the project environment:

uv add pygments-ashen

Then, you can use ashen as the style in Pygments formatters. Here's an example from Zona. This code renders a Markdown code block in HTML with Ashen highlighting, using the marko library:

# method part of subclass of marko.html_renderer.HTMLRenderer
@override
def render_fenced_code(self, element: FencedCode):
    # pygments expects a single string, not a list of lines
    code = "".join(child.children for child in element.children)
    # fallback to "text" if no language specified
    lang = element.lang or "text"

    # load the correct pygments lexer
    try:
        lexer = get_lexer_by_name(lang, stripall=False)
    except Exception:
        lexer = TextLexer(stripall=False)

    # use the "ashen" style, requires pygments-ashen package
    formatter = HtmlFormatter(style="ashen", nowrap=True, noclasses=True)
    # highlight the code
    highlighted = highlight(code, lexer, formatter)

    # return rendered code block
    return (
        f'<pre class="code-block language-{lang}">'
        f"<code>{highlighted}</code></pre>"
    )