Strikethrough from visual editor being ignored/filtered

[markel]

Confirmed in 3.1-alpha.

Steps to reproduce:

1. Open an existing post, or create a new one.
2. Enter some text and highlight it, then apply the strikethrough properly using the visual editor.
3. Either preview the post or switch over to HTML editing mode and back.
4. The text will have returned to normal.

[markel]

The editor appears to be using <s> for the strikethrough text (according to the status area); since that tag is deprecated, should it use either a style or <del> instead?

[nacin]

I noticed this the other day, but I forgot to look into it. This is a regression from 2.9, which properly uses the <del> tag.

[nacin]

My initial test lied, I started in HTML view (which works fine). Not a regression.

[designsimply]

Behavior varies by browser. See #14229

[azaozz]

It seems the <s> or <strike> tags are actually added by the browser's built-in editor (that's why they are different for different browsers). They are later replaced with a styled span for compatibility reasons. Unfortunately many browsers don't support all tags in contentEditable mode.

However I cannot reproduce the behavior reported in this ticket. Setting a few words or a whole paragraph to deleted (strike through) seems to work properly in both 2.9 and 3.0 (haven't tested in multi-site mode).

[rmarks]

I can confirm this bug exists in Chrome 5.0.396.0 beta. In my case, the post belongs to site number 2 of a multi-site install running version 3.0. The strike through is seen after highlighting the text and clicking the strikethrough button, but the markup is filtered when the post is updated. I was able to toggle to the HTML editor, apply the <del> tag, and successfully Update the post. I returned to the Visual editor and was able to see the strike through over the text. Subsequent saves of the post do not cause the strike through to be filtered.

[iandstewart]

I can confirm this bug exists w/ Chrome and Safari. Adding a strikethrough effect by clicking the strikethrough button in the Visual Editor and then clicking Publish or the HTML tab will strip the tags from the content. Adding a del tag first in the HTML editor, clicking the Visual Editor tab and then moving back and forth between HTML and Visual or publishing will not strip it out.

[uncleringo]

I can also confirm this as a bug. No one in our office can use strikethrough with google's chrome browser. With firefox it works fine.

My version of chrome is 5.0.375.55

[azaozz]

Fixed in [16090], the visual editor now uses <del>.