Bug 249923 – REGRESSION (Safari 14-16): Duplicated CR-LF in textarea with wrap="hard"

• Status: RESOLVED
• Resolution: FIXED
• Component: Layout and Rendering

[Andrey Pashnin]

If I submit a form with a textarea containing "A0d0aB" it sends "A0d0a0d0aB".
If I submit a form with a textarea containing "A0d0a0d0aB" it sends "A0d0a0d0a0d0a0d0aB". 
(each CR-LF pair gets duplicated)


It works fine from Chrome and the old Safari, but not the new one. 
I couldn't find how to get the specific version of the WebKit.



OK:
from Safari (Version 14.0.2 (15610.3.7.1.10 15610), detected by httpd as:
"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0.2 Safari/605.1.15"

DUPLICATED:
from Safari (Version 16.1 (17614.2.9.1.13, 17614), detected by httpd as: 
"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.1 Safari/605.1.15"



It seems to be related to:
https://bugs.webkit.org/show_bug.cgi?id=249916

It seemed to happened at around the time of this change:
https://trac.webkit.org/changeset/293672/webkit/

[Andrey Pashnin]

Also OK from Chrome, detected by httpd as:
"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36"

[Andrey Pashnin]

And as I expected, as soon as I upgraded iPadOS to 16.2 my Chrome is detected as AppleWEbKit/605.1.15 now and all the CR-LF pairs get duplicated!

[Andrey Pashnin]

I have just reproduced the bug with the latest version for Monterey:
258350@main DECEMBER 29, 2022 AT 03:43 AM GMT+1

downloaded from here:
https://s3-us-west-2.amazonaws.com/minified-archives.webkit.org/mac-monterey-x86_64%20arm64-release/[e-mail]

[Andrey Pashnin]

It only happens if a textarea has [wrap="hard"] attributes! 
If the attribute is removed, there are no more duplications.

[Radar WebKit Bug Importer]

<rdar://problem/103870498>

[Fujii Hironori]

Created attachment 464336 [details]
test case

[Fujii Hironori]

I did bisecting with my WinCairo collection.

r281133 good
r281553 bad

[Fujii Hironori]

240773@main (bug#228882) seems to be suspicious.

[zalan]

(In reply to Fujii Hironori from comment #8)
> 240773@main (bug#228882) seems to be suspicious.
yeah that's a strong candidate.

[zalan]

Created attachment 464463 [details]
Patch

[zalan]

Created attachment 464464 [details]
Patch

[EWS]

Committed 258830@main (4dde2b983f43): <https://commits.webkit.org/258830@main>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 464464 [details].