Zebraw is a lightweight and fast package for displaying code blocks with line numbers in typst, supporting code line highlighting. The term zebraw is a combination of zebra and raw, for the highlighted lines will be displayed in the code block like a zebra lines.

Starting

Import zebraw package by #import "@preview/zebraw:0.4.3": * then follow with #show: zebraw to start using zebraw in the simplest way. To manually display some specific code blocks in zebraw, you can use #zebraw() function:

Features

Line Numbering

Line numbers will be displayed on the left side of the code block. By passing an integer to the numbering-offset parameter, you can change the starting line number. The default value is 0.

Line Highlighting

You can highlight specific lines in the code block by passing the highlight-lines parameter to the zebraw function. The highlight-lines parameter can be a single line number or an array of line numbers.

Comment

You can add comments to the highlighted lines by passing an array of line numbers and comments to the highlight-lines parameter.

Comments can begin with a flag, which is ">" by default. You can change the flag by passing the comment-flag parameter to the zebraw function:

To disable the flag feature, pass "" to the comment-flag parameter (the indentation of the comment will be disabled as well):

Header and Footer

Usually, the comments passing by a dictionary of line numbers and comments are used to add a header or footer to the code block:

Or you can use header and footer parameters to add a header or footer to the code block:

Language Tab

If lang is set to true, then there will be a language tab on the top right corner of the code block:

Customize the language to display by pass a string or content to the lang parameter.

Copyable

Line numbers will not be selected when selecting exported code in one page.

Theme

PRs are welcome!

(Experimental) HTML Variant

See example-html.typ or GitHub Pages for more information.

Customization

There are 3 ways to customize code blocks in your document:

• Manually render some specific blocks by #zebraw() function and passing parameters to it.
• By passing parameters to #show: zebraw.with() will affect every raw block after the #show rule, except blocks created manually by #zebraw() function.
• By passing parameters to #show: zebraw-init.with() will affect every raw block after the #show rule, including blocks created manually by #zebraw() function. By using zebraw-init without any parameters, the values will be reset to default.

Inset

Customize the inset of each line by passing a to the inset parameter:

Colors

Customize the background color by passing a or an of s to the background-color parameter.

Customize the highlight color by passing a to the highlight-color parameter:

Customize the comments’ background color by passing a to the comment-color parameter:

Customize the language tab’s background color by passing a to the lang-color parameter.

Font

To customize the arguments of comments’ font and the language tab’s font, pass a dictionary to comment-font-args parameter and lang-font-args parameter.

Language tab will be rendered as comments if nothing is passed.

Extend

Extend at vertical is enabled at default. When there’s header or footer it will be automatically disabled.

Documentation

See manual.pdf for more information.

Example

Performance

See results in bench.sh.

License

Zebraw is licensed under the MIT License. See the LICENSE file for more information.