Erase Formatting Doesn't erase

[RDall]

In the Content area of a page under the visual test manager of a page if you highlight text click the bold button add italics and cross out. When I I highlight the text and then click the erase format button it only removes the italics and leaves the cross out.

On two other builds I have tested this problem with it turns the text red?

Have tested on two local installs. (one clean to test this issue) and one external install. All using Trunk all the same issue. See screenshot for visual reference.

​http://cl.ly/image/1Y1I1H2u471E

Is this reproducible in 3.4.2?

Screenshot of issue on two different builds.

That looks like two different themes to me, probably styling stuff (markup) differently. What's the HTML/Text tab show? Screenshot of that is probably fine.

Related, #21037.

Yes I was able reproduce the problem in 3.4.2 It will remove the bold and the italics but the strike through was not removed. I also checked the html version and all tags were removed but the strike through tag.

​http://cl.ly/image/1X1i2c1K0v0A

Since we use <del> tag for the Strikethrough button, we need to specify it as removable with the Remove Format button. This can be set in the formats init option. Also added there few of the deprecated elements that are supported with the patched html5 schema.

#21037 was marked as a duplicate.

Tested the patch and it works as expected w/ 3.6-alpha.

#23359 was marked as a duplicate.

HTML5 defines strong, del and em as having semantic meaning and not a styling one. If all the editor does is styling then it should use style="font-weight:bold" instead of strong etc..

Looking at the patch the deletion of strong, em, del, and ins is wrong as it changes the meaning of the content.