Ignore url() values when minifying CSS

[Sandmania]

Lets say you have the following filter property in your css

filter: url("data:image/svg+xml;utf8,<svg version='1.1' xmlns='http://www.w3.org/2000/svg' height='0'><filter id='greyscale'><feColorMatrix type='matrix' values='0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0 0 0 1 0' /></filter></svg>#greyscale");

Minify this and you get:

filter:url("data:image/svg+xml;utf8,<svgversion='1.1'xmlns='http://www.w3.org/2000/svg'height='0'><filterid='greyscale'><feColorMatrixtype='matrix'values='0.33330.33330.3333000.33330.33330.3333000.33330.33330.33330000010'/></filter></svg>#greyscale");

And using this you'll get:

XML Parsing Error: not well-formed
Location: data:image/svg+xml;utf8,<svgversion='1.1'xmlns='http://www.w3.org/2000/svg'height='0'><filterid='greyscale'><feColorMatrixtype='matrix'values='0.33330.33330.3333000.33330.33330.3333000.33330.33330.33330000010'/></filter></svg>#greyscale
Line Number 1, Column 12:
<svgversion='1.1'xmlns='http://www.w3.org/2000/svg'height='0'><filterid='greyscale'><feColorMatrixtype='matrix'values='0.33330.33330.3333000.33330.33330.3333000.33330.33330.33330000010'/></filter></svg>
-----------^

[samaxes]

Minify Maven Plugins uses YUI Compressor for CSS minification.
Can you please fill an issue on the project at https://github.com/yui/yuicompressor?

[Sandmania]

Ach, right.

It seems there is an issue for this already, lets hope they'll fix it soon:

yui/yuicompressor#141

[samaxes]

Thanks!

[iscadefrango]

yuicompressor released a jar with a fix for inline svg whitespaces
Here: yui/yuicompressor/pull/319