268742 2024-02-05 06:09:38 -0800 cssText wrong escaping 2024-02-14 17:17:29 -0800 1 1 1 Unclassified WebKit CSS Safari 17 Unspecified Unspecified NEW https://jsfiddle.net/v57r8dt4/ BrowserCompat, InRadar P2 Normal --- 1 32jojo32 webkit-unassigned ahmad.saleem792 karlcow koivisto m_dubet webkit-bug-importer oldest_to_newest 2010632 0 32jojo32 2024-02-05 06:09:38 -0800 Run this code in safari and see that the cssText is wrongly escaped const style = document.createElement('style') document.body.append(style) style.sheet.insertRule(`h6 { background: url(/my-image.png), var(--my-image); }`) console.log(style.sheet.cssRules[0].cssText) Output: h6 { background: url(\/my-image\.png), var(--my-image); } Chrome and Firefox outputs: h6 { background: url(/my-image.png), var(--my-image); } 2010664 1 ahmad.saleem792 2024-02-05 07:57:44 -0800 *** Safari Technology Preview 187 *** "h6 { background: url(\/my-image\.png), var(--my-image); }" *** Chrome Canary 123 *** "h6 { background: url(/my-image.png), var(--my-image); }" *** Firefox Nightly 124 *** "h6 { background: url(/my-image.png), var(--my-image); }" ___ Just wanted to share as of today result. I will share Minibrowesr (WebKit ToT) results later. 2010695 2 ahmad.saleem792 2024-02-05 09:20:14 -0800 WebKit ToT (274096@main) same as STP187. 2010737 3 gsnedders 2024-02-05 10:53:53 -0800 I will note that both outputs are semantically equivalent; have you had this serialisation difference cause problems anywhere? 2010738 4 gsnedders 2024-02-05 11:01:46 -0800 See also https://github.com/w3c/csswg-drafts/issues/9913 for the spec not matching any existing major browser. 2012660 5 32jojo32 2024-02-12 03:31:32 -0800 @Sam Sneddon, I don't believe it carries the same semantic meaning. There are actually two backslashes. The raw form is `h6 { background: url(\\/my-image\\.png), var(--my-image); }`. which is not equal to: `h6 { background: url(\/my-image\.png), var(--my-image); }` or `h6 { background: url(/my-image.png), var(--my-image); }` 2012679 6 webkit-bug-importer 2024-02-12 06:10:13 -0800 <rdar://problem/122796093>