SVG `gradientUnits` not handled correctly?

[JeremyRand]

The below SVG image seems to be rendered with an incorrect gradient in WeasyPrint; WeasyPrint renders the entire shape as cyan, while the shape is supposed to be 5 colors (as observed in Firefox). I suspect (but have not proven) that the bug relates to the gradientUnits attribute, as the rendering in Firefox with this attribute removed matches the rendering in WeasyPrint with this attribute present.

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg
   xmlns="http://www.w3.org/2000/svg"
   width="530.00037"
   height="123.07568"
   version="1.1">
  <defs>
    <linearGradient id="gradient1" x1="0" x2="0" y1="314" y2="348" gradientUnits="userSpaceOnUse">
      <stop offset="0%" stop-color="#5BCEFA" />
      <stop offset="20%" stop-color="#5BCEFA" />
      <stop offset="20%" stop-color="#F5A9B8" />
      <stop offset="40%" stop-color="#F5A9B8" />
      <stop offset="40%" stop-color="white" />
      <stop offset="60%" stop-color="white" />
      <stop offset="60%" stop-color="#F5A9B8" />
      <stop offset="80%" stop-color="#F5A9B8" />
      <stop offset="80%" stop-color="#5BCEFA" />
      <stop offset="100%" stop-color="#5BCEFA" />
    </linearGradient>
  </defs>
  <g
     transform="translate(62.781694,-470.2193)">
    <g
       transform="matrix(1.4378176,0,0,1.4378176,-369.49057,-753.39275)">
      <g
         transform="matrix(1.0286879,0,0,1.0286879,-47.28006,553.99226)"
         style="fill:url(#gradient1)">
        <path
           id="path5-1"
           d="m 345.423,316.135 c 0.703,-0.207 1.478,-0.442 2.325,-0.713 0.847,-0.27 1.798,-0.518 2.852,-0.744 1.054,-0.226 2.232,-0.414 3.534,-0.559 1.302,-0.146 2.779,-0.217 4.433,-0.217 4.877,0 8.225,1.405 10.044,4.217 1.818,2.811 2.128,6.654 0.93,11.531 l -4.216,17.606 h -9.238 l 4.092,-17.235 c 0.248,-1.074 0.443,-2.117 0.589,-3.132 0.145,-1.012 0.134,-1.899 -0.031,-2.666 -0.166,-0.764 -0.548,-1.383 -1.147,-1.858 -0.6,-0.476 -1.519,-0.713 -2.759,-0.713 -1.199,0 -2.418,0.123 -3.658,0.371 l -6.014,25.233 h -9.238 l 7.502,-31.121 z"
            />
      </g>
    </g>
  </g>
</svg>

Tested with Git commit 0220156ba6e27461ab1dd07837070e01e466293a (the bug also shows up in v62.3 as packaged in Debian Forky). Let me know if there's anything I can do to help reproduce this.

[liZe]

Hi!

Thanks for the bug report, with a clean way to reproduce ❤️. It’s fixed in the faster-svg-emojis branch that includes improvements for SVG fonts and… normal SVGs too!