Let's hide them for now as mobile diff is out of scope and we need to align the colors between desktop and mobile web as per Design System's recommendation in future.

Change 940271 had a related patch set uploaded (by HMonroy; author: HMonroy):

[mediawiki/extensions/MobileFrontend@master] Hide inline format line markers in Mobile

https://gerrit.wikimedia.org/r/940271

Let's hide them for now

Hide the markers but keep the empty line, or collapse it? e.g. this

The table diff shows the empty line:

Please keep the empty line.

@Samwilson @JSengupta-WMF Thank you for looking into this!

I believe the line markers in mobile used to show up with a background color to convey that a newline or deleted line. I reverted the markers in my local and this is what I get. I might be missing something.

Let me know what you think.

As mentioned on T330247, the mobile site previously had a continuous background color. This was flagged on https://en.wikipedia.org/wiki/Wikipedia:Village_pump_(technical)#Not_digging_the_new_mobile_diffs
I don't see anything in any tasks that this was intentional.

Previously:

Now

Assuming that the new lines were not intended to separate the different lines, you'll need to move the styling to the parent elements.
e.g.

.mw-diff-inline-added {
	background-color: #75c877;
}

.mw-diff-inline-deleted {
	background-color: #e07076;
}

FWIW as a mobile user I do find the whitespace jarring. It makes diffs on mobile much harder to scan.

In T342160#9035414, @Jdlrobson wrote:

As mentioned on T330247, the mobile site previously had a continuous background color. This was flagged on https://en.wikipedia.org/wiki/Wikipedia:Village_pump_(technical)#Not_digging_the_new_mobile_diffs
I don't see anything in any tasks that this was intentional.

Previously:

Now

Assuming that the new lines were not intended to separate the different lines, you'll need to move the styling to the parent elements.
e.g.

.mw-diff-inline-added {
	background-color: #75c877;
}

.mw-diff-inline-deleted {
	background-color: #e07076;
}

FWIW as a mobile user I do find the whitespace jarring. It makes diffs on mobile much harder to scan.

We just merged https://gerrit.wikimedia.org/r/c/mediawiki/core/+/940995 to make the whitespace a bit less jarring in desktop and mobile. The issue you mentioned was introduced when trying to improve T327645: Inline Diff: Insert/delete introduce line breaks. I hope this helps. Thank you @Jdlrobson !!

Change 940271 merged by jenkins-bot:

[mediawiki/extensions/MobileFrontend@master] Hide inline format line markers in Mobile

https://gerrit.wikimedia.org/r/940271

@HMonroy For this task there are no more delete and new line markers for mobile diff, only on desktop. There are a couple of different issues that I came across though as seen below. Please let me know if you want me to close this task and create new ones, thanks!

OS: macOS 13.4, Windows 11
Browsers: Chrome 115, Firefox 115, Edge 114, Safari 16.5
Test Links
Desktop/new line: https://en.wikipedia.beta.wmflabs.org/w/index.php?title=R%C3%A9seau_Jean-Bernard&diff=596946&oldid=596001&diffmode=source&diff-type=inline
Desktop/delete line: https://en.wikipedia.beta.wmflabs.org/w/index.php?title=R%C3%A9seau_Jean-Bernard&diff=596001&oldid=596000&diffmode=source&diff-type=inline
Mobile/new line: https://en.m.wikipedia.beta.wmflabs.org/w/index.php?title=Special:MobileDiff/596946&diff-type=inline&diffmode=source
Mobile/delete line: https://en.m.wikipedia.beta.wmflabs.org/wiki/Special:MobileDiff/596001

Desktop: White space- Some have white space and some don't or not the same size for add/delete

Mobile: Add/Delete crosses over

@GMikesell-WMF thank you for looking into this. I was able to reproduce some of the crossing over and white lines in my local, but I think they are very low priority. The main issue is for users to be able to easily scan the diffs. We can close this task and see if any other issues are reported. Thanks again!

@HMonroy Ok sounds good. There are no other issues that I came across besides the ones mentioned above. Thanks for the work and I'll move this to Done!