Bug 242104 - white-space value change is ignored when the content is whitespace only.
Summary: white-space value change is ignored when the content is whitespace only.
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: CSS (show other bugs)
Version: WebKit Local Build
Hardware: Unspecified Linux
: P2 Normal
Assignee: Antti Koivisto
URL:
Keywords: BrowserCompat, InRadar
Depends on:
Blocks:
 
Reported: 2022-06-29 03:14 PDT by 2843035794
Modified: 2022-07-11 01:50 PDT (History)
5 users (show)

See Also:

Attachments
the two file only change white-space :pre (955 bytes, application/x-zip-compressed)
2022-06-29 03:15 PDT, 2843035794 		no flags Details
Test reduction (270 bytes, text/html)
2022-07-01 07:50 PDT, zalan 		no flags Details
View All Add an attachment (proposed patch, testcase, etc.)

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Description 2843035794 2022-06-29 03:14:34 PDT 
Some grammar in webkit and chrome have different display .
When use white-space:pre and the label not have content.
Chrome and webkit have different display.
Then I see the https://developer.mozilla.org/en-US/docs/Web/CSS/white-space,I think might be save the white space.

WebKitGTK version is 2.36.3
Comment 1 2843035794 2022-06-29 03:15:44 PDT 
Created attachment 460537 [details]
the two file only change white-space :pre
Comment 2 zalan 2022-07-01 07:50:08 PDT 
Created attachment 460609 [details]
Test reduction

It looks like we ignore the white-space style change when the content is whitespace only.
Comment 3 zalan 2022-07-01 08:32:16 PDT 
(In reply to 2843035794 from comment #0)
> Some grammar in webkit and chrome have different display .
> When use white-space:pre and the label not have content.
> Chrome and webkit have different display.
> Then I see the
> https://developer.mozilla.org/en-US/docs/Web/CSS/white-space,I think might
> be save the white space.
You are right, white-space handling has a bug in WebKit. Thank you for filing it.
Comment 4 zalan 2022-07-01 09:10:53 PDT 
1. initially we don't create a renderer (RenderText) for the collapsed whitespace content
2. however when style changes to "yes, please preserve whitespace", we don't recover from it by constructing a RenderText object.
Comment 5 zalan 2022-07-01 09:11:39 PDT 
This looks like a RenderTreeUpdater::updateRenderTree() issue -> Antti.
Comment 6 Radar WebKit Bug Importer 2022-07-01 09:11:59 PDT 
<rdar://problem/96295935>