Hex colors in gradients may not be shrinked properly (regressed since 4.1.5)

[ngyikp]

Not a serious bug, but more of a degradation

• clean-css version - npm ls clean-css: 4.1.7, but regressed since 4.1.5, most likely gradient color value will be optimized in the filter #945
• node.js version - node -v: v8.1.4
• operating system: macOS 10.12.5

Configuration options

const CleanCSS = require('clean-css');
const fs = require('fs');

const input = fs.readFileSync('test.css', 'utf-8');
console.log(new CleanCSS().minify(input).styles);

Input CSS

.a {background-image:linear-gradient(to top, #AABBCC, #ffffff);}
.b {background-image:linear-gradient(to top, #AABBCC, #FFFFFF);}

Actual output CSS

.a{background-image:linear-gradient(to top,#abc,#ffffff)}
.b{background-image:linear-gradient(to top,#abc,#fffFFF)}

Expected output CSS

.a,.b{background-image:linear-gradient(to top,#abc,#fff)}

Hex colors in gradients are failing to shrink and some weird capitalisation if they are uppercase.

[jakubpawlowicz]

This is weird indeed. Thanks for catching it!

[jakubpawlowicz]

Thanks @ngyikp, it's fixed in 4.1.8.