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5. cradeq/commonmark-strikethrough-sub-sup-extension

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cradeq/commonmark-strikethrough-sub-sup-extension
=================================================

Adds support for strikethrough, subscript and superscript in Markdown (using `<del>`, `<sub>` and `<sup>` HTML tags).

v1.0.0(3mo ago)044MITPHPPHP ^8.0

Since Feb 10Pushed 3mo agoCompare

[ Source](https://github.com/Cradeq/commonmark-strikethrough-sub-sup-extension)[ Packagist](https://packagist.org/packages/cradeq/commonmark-strikethrough-sub-sup-extension)[ Docs](https://github.com/Cradeq/commonmark-strikethrough-sub-sup-extension)[ RSS](/packages/cradeq-commonmark-strikethrough-sub-sup-extension/feed)WikiDiscussions main Synced 1mo ago

READMEChangelog (1)Dependencies (2)Versions (2)Used By (0)

CommonMark Strikethrough, Sub & Sup Extension
-------------------------------------------------

[](#commonmark-strikethrough-sub--sup-extension)

This package adds support for subscript and superscript in Markdown (using `` and `` HTML tags). This package also duplicates the logic used in the [League Strikethrough Extension](https://commonmark.thephpleague.com/2.x/extensions/strikethrough/) (which generates `` tags).

There is no official spec that supports both subscript and strikethrough. As they both typically use the tilde character (~), we follow the [extended syntax of Markdown Guide](https://www.markdownguide.org/extended-syntax). That means that strikethrough with only one tilde is necessarily NOT supported. Subscript and strikethrough can be nested, similar to how emphasis works (`~Subscript ~~Subscript and striked~~~`).

### Added markdown features

[](#added-markdown-features)

NameMarkdownResultSuperscript`^Text^``Text`Subscript`~Text~``Text`Strikethrough`~~Text~~``Text`Install
-------

[](#install)

This project can be installed via composer:

`composer require cradeq/commonmark-strikethrough-sub-sup-extension`

Usage
-----

[](#usage)

```
use Cradeq\CommonMark\StrikethroughSubExtension;
use Cradeq\CommonMark\SupExtension;
use League\CommonMark\Environment\Environment;
use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;

$environment = new Environment();
$environment->addExtension(new CommonMarkCoreExtension);
$environment->addExtension(new StrikethroughSubExtension);
$environment->addExtension(new SupExtension);
```

###  Health Score

36

—

LowBetter than 82% of packages

Maintenance82

Actively maintained with recent releases

Popularity10

Limited adoption so far

Community6

Small or concentrated contributor base

Maturity39

Early-stage or recently created project

 Bus Factor1

Top contributor holds 100% of commits — single point of failure

How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window.

**Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores.

**Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement.

**Maturity (30%)** — Project age, version count, PHP version support, and release stability.

###  Release Activity

Cadence

Unknown

Total

1

Last Release

91d ago

### Community

Maintainers

![](https://www.gravatar.com/avatar/e9b9b3ba9b4e16a32b0d4b47ef5125dc9470770592979d55b1fdcbcbdb06d3a3?d=identicon)[chillbram](/maintainers/chillbram)

---

Top Contributors

[![chillbram](https://avatars.githubusercontent.com/u/7299762?v=4)](https://github.com/chillbram "chillbram (1 commits)")

---

Tags

markdowncommonmarkextensionsubsubscriptstrikethroughsupsuperscripttilde

###  Code Quality

TestsPHPUnit

### Embed Badge

![Health badge](/badges/cradeq-commonmark-strikethrough-sub-sup-extension/health.svg)

```
[![Health](https://phpackages.com/badges/cradeq-commonmark-strikethrough-sub-sup-extension/health.svg)](https://phpackages.com/packages/cradeq-commonmark-strikethrough-sub-sup-extension)
```

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