Inline widget does not preserve trailing space

[gfox1984]

Are you reporting a feature or a bug?

Bug

Provide detailed reproduction steps (if any)

1. Create a widget plugin for an inline element (eg: span)
2. Load some data in CKEditor with a trailing space inside the element to be converted to a widget (eg: <span>lorem </span>ipsum )

see JSFiddle here: https://jsfiddle.net/cf5d457L/5/

Expected result

The following text to be displayed: lorem ipsum

Actual result

The following text is displayed (notice the missing space): loremipsum

Other details

• Browser: all
• OS: all
• CKEditor version: latest (4.7.0)
• Installed CKEditor plugins: the Full preset together with all other plugins created by CKSource

[gfox1984]

While waiting for a fix, I wrote a work around that forces the last trailing space to be replaced with a non breaking space when upcasting the widget, and then replace it again with a space when downcasting it.

Updated fiddle here: https://jsfiddle.net/tuk1y92j/

[beatadelura]

It's happening because every white space and trailing space each inline element is removed. It's when inline element has css white-space set to normal, nowrap, pre-line. While white-space set to pre or pre-wrap cause all white characters in the source are preserved.

To read more, click link.

[beatadelura]

There is one case which will not be fixed with this issue because it's related to core code. Please see #791.