Bug 248201

Summary:

Strings are not wrapped at zero width spaces when "word-break: keep-all" is set

Product:

WebKit

Reporter:

Mark Donnellon <mark+webkit>

Component:

Layout and Rendering

Assignee:

alan <zalan>

Status:

RESOLVED FIXED

Severity:

Normal

CC:

bfulgham, changseok, esprehn+autocc, ews-watchlist, glenn, karlcow, koivisto, kondapallykalyan, pdr, simon.fraser, webkit-bug-importer, zalan

Priority:

Keywords:

BrowserCompat, InRadar

Version:

Safari 16

Hardware:

Mac (Intel)

OS:

macOS 13

URL:

https://codesandbox.io/s/wrapping-japanese-with-zwsp-f1nuic?file=/index.html

Attachments:

Description	Flags
[fast-cq]Patch	none
screen-shot of the test case with the patch applied	none

Mark Donnellon

Reported 2022-11-21 19:10:37 PST

I expect zero width spaces to have the same effect as regular spaces regarding wrapping text. However, in Safari, lines are not broken at zero width spaces. This is different to Chrome and Firefox, which break lines on zero width spaces when wrapping. https://codesandbox.io/s/wrapping-japanese-with-zwsp-f1nuic?file=/index.html

Attachments
[fast-cq]Patch (2.99 KB, patch) 2022-11-21 21:20 PST, alan	no flags	Details Formatted Diff Diff
screen-shot of the test case with the patch applied (870.23 KB, image/png) 2022-11-21 21:22 PST, alan	no flags	Details
View All Add attachment proposed patch, testcase, etc.

Mark Donnellon

Comment 1 2022-11-21 19:13:44 PST

My use case for this functionality was to allow my japanese strings to indicate appropriate spots to break lines without creating space between characters.

alan

Comment 2 2022-11-21 20:00:01 PST

Thank you for filing this bug report. It looks like zero-width space is not treated as a soft wrap opportunity when "word-break: keep-all" is set on the block container.

Radar WebKit Bug Importer

Comment 3 2022-11-21 20:00:25 PST

<rdar://problem/102593988>

alan

Comment 4 2022-11-21 21:20:40 PST

Created attachment 463656 [details] [fast-cq]Patch

alan

Comment 5 2022-11-21 21:22:00 PST

Created attachment 463657 [details] screen-shot of the test case with the patch applied

EWS

Comment 6 2022-11-22 06:58:06 PST

Committed 256937@main (d97fdbd62db3): <https://commits.webkit.org/256937@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 463656 [details].

Mark Donnellon

Comment 7 2022-11-22 14:50:10 PST

Wow! I'm glad I could create a good bug report and it was addressed so quickly!

alan

Comment 8 2022-11-22 14:56:35 PST

(In reply to Mark Donnellon from comment #7) > Wow! I'm glad I could create a good bug report and it was addressed so > quickly! I wish all bug reports were like this :) Thanks again!

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