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fix: improve handling of url references in reference attributes #1881

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merged 1 commit into from
Dec 10, 2023

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In multiple areas in the code, we were handling URL references in attributes poorly. Namely, when checking for them, we should check for url(#a), url('#a'), and url("#a"), but in some places we were only checking the first.

This also migrates some logic from cleanupIds to a new utility to centralize collecting references from an attribute, which is already being used by another plugin.

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@SethFalco SethFalco merged commit e6deeca into svg:main Dec 10, 2023
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@SethFalco SethFalco deleted the fix/1711 branch December 10, 2023 02:07
nono referenced this pull request in cozy/cozy-stack Dec 11, 2023
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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [svgo](https://svgo.dev) ([source](https://togithub.com/svg/svgo)) |
[`3.0.5` -> `3.1.0`](https://renovatebot.com/diffs/npm/svgo/3.0.5/3.1.0)
|
[![age](https://developer.mend.io/api/mc/badges/age/npm/svgo/3.1.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/svgo/3.1.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/svgo/3.0.5/3.1.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/svgo/3.0.5/3.1.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>svg/svgo (svgo)</summary>

### [`v3.1.0`](https://togithub.com/svg/svgo/releases/tag/v3.1.0)

[Compare Source](https://togithub.com/svg/svgo/compare/v3.0.5...v3.1.0)

#### What's Changed

##### Bug Fixes

- [**Prefix IDs**](https://svgo.dev/docs/plugins/prefix-ids/), correctly
prefix IDs when `<style>` tag contains XML comments. By
[@&#8203;john-neptune](https://togithub.com/john-neptune) in
[https://github.com/svg/svgo/pull/1736](https://togithub.com/svg/svgo/pull/1736)
- [**Remove Hidden
Elements**](https://svgo.dev/docs/plugins/remove-hidden-elems/), improve
handling of definitions (`<defs>`), namely when `<defs>` are defined at
the end of the document. By
[@&#8203;KTibow](https://togithub.com/KTibow) in
[https://github.com/svg/svgo/pull/1879](https://togithub.com/svg/svgo/pull/1879)
- [**Cleanup Enable
Background**](https://svgo.dev/docs/plugins/cleanup-enable-background/),
clean up inline-styles too. By
[@&#8203;SethFalco](https://togithub.com/SethFalco) in
[https://github.com/svg/svgo/pull/1866](https://togithub.com/svg/svgo/pull/1866)
- [**Cleanup IDs**](https://svgo.dev/docs/plugins/cleanup-ids/), handle
URI encoded references properly. By
[@&#8203;SethFalco](https://togithub.com/SethFalco) in
[https://github.com/svg/svgo/pull/1880](https://togithub.com/svg/svgo/pull/1880)
- [**Inline Styles**](https://svgo.dev/docs/plugins/inline-styles/), no
longer crashes on non-inlined selectors with a pseudo-class. By
[@&#8203;SethFalco](https://togithub.com/SethFalco) in
[https://github.com/svg/svgo/pull/1865](https://togithub.com/svg/svgo/pull/1865)
- Improve handling of URL references in reference attributes
(`url('#a')`) across various plugins. By
[@&#8203;SethFalco](https://togithub.com/SethFalco) in
[https://github.com/svg/svgo/pull/1881](https://togithub.com/svg/svgo/pull/1881)

##### SVG Optimization

- [**Remove Unknowns and
Defaults**](https://svgo.dev/docs/plugins/remove-unknowns-and-defaults/),
now removes defaults in XML declarations too, enabled by default and can
be toggled with `defaultMarkupDeclarations`. By
[@&#8203;SethFalco](https://togithub.com/SethFalco) in
[https://github.com/svg/svgo/pull/1872](https://togithub.com/svg/svgo/pull/1872)

#### Metrics

Before and after using vectors from various sources, with the default
preset of each respective version:

| SVG | Original | v3.0.5 | v3.1.0 | Delta |
|---|---|---|---|---|
| [Arch Linux Logo](https://archlinux.org/art/) | 9.529 KiB | 4.608 KiB
| 4.162 KiB | ⬇️ 0.446 KiB |
|
[Blobs](https://gitlab.gnome.org/GNOME/gnome-backgrounds/-/blob/main/backgrounds/blobs-d.svg)
| 50.45 KiB | 42.949 KiB | 42.949 KiB | |
| [Isometric
Madness](https://inkscape.org/~Denis_Kuznetsky/%E2%98%85isometric-madness)
| 869.034 KiB | 550.153 KiB | 550.153 KiB | |
| [tldr-pages
Banner](https://togithub.com/tldr-pages/tldr/blob/main/images/banner.svg)
| 2.071 KiB | 1.07 KiB | 1.07 KiB | |
| [Wikipedia
Logo](https://en.wikipedia.org/wiki/File:Wikipedia-logo-v2.svg) |
161.551 KiB | 117.146 KiB | 116 KiB | ⬇️ 1.146 KiB |

Before and after of the browser bundle of each respective version:

| | v3.0.5 | v3.1.0 | Delta |
|---|---|---|---|
| svgo.browser.js | 657.5 kB | 660.9 kB | ⬆️ 3.4 kB |

</details>

---

### Configuration

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🚦 **Automerge**: Disabled by config. Please merge this manually once you
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🔕 **Ignore**: Close this PR and you won't be reminded about this update
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linearGradient being removed but references remain
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