Creates W3C errors

[Jonteemil]

Hello!

On https://en.wikipedia.org/wiki/File:UEFA_Champions_League_logo_2.svg svgcleaner, which is incorporated in the bot that uploaded the newest version, created two W3C errors. I thought I should report it so here I am.

[JoKalliauer]

@Jonteemil Can you provide the image before optimization? I might have been invalid before, but not recognized by the validator.

Generally you should not care about Validation that much, see https://commons.wikimedia.org/wiki/User:JoKalliauer/Optimization#why_validation_is_generally_not_desired .

[Jonteemil]

@JoKalliauer https://upload.wikimedia.org/wikipedia/en/archive/b/bf/20210429000805%21UEFA_Champions_League_logo_2.svg old version, https://upload.wikimedia.org/wikipedia/en/b/bf/UEFA_Champions_League_logo_2.svg current version

[JoKalliauer]

@Jonteemil : You could e.g. use svgcleaner input.svg output.svg --allow-bigger-file --indent 1 --remove-declarations no --resolve-use no for this file.
Generally for a bot I would recommend to use "safe" options, as recommended in https://commons.wikimedia.org/wiki/User:JoKalliauer/Optimization#svgcleaner , see also #159 .
Maybe for fair-use-files, as in your case, it makes sense for legal reasons to compress SVGs further, with "dangerous" options.

Minimal working example:

Input:

input.svg.txt

<?xml version="1.0" encoding="UTF-8"?>
<svg height="114.51" viewBox="0 0 31.512 30.297" width="119.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
 <defs>
  <clipPath id="a">
   <use height="100%" width="100%" xlink:href="#b"/>
  </clipPath>
  <path id="b" d="m0 0h118.2v113.6h-118.2z"/>
 </defs>
 <path clip-path="url(#a)" d="m1 1 1 1" fill="#0e2050"/>
</svg>

Output with --resolve-use yes

<?xml version="1.0" encoding="UTF-8"?>
<svg height="114.51" viewBox="0 0 31.512 30.297" width="119.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
 <clipPath id="a">
  <path d="m0 0h118.2v113.6h-118.2z" height="100%" width="100%"/>
 </clipPath>
 <path clip-path="url(#a)" d="m1 1 1 1" fill="#0e2050"/>
</svg>

---

PS: I'm not a contributor (just did once a linkfix), I'm just an ordinary user.

[Jonteemil]

@JoKalliauer Hello! The bot is not mine, I just reported the error. Thanks anyway for the info regarding validation and such!