Redesign save dialog / diff view
Open, NormalPublic40 Story Points

Description

Having "show changes" take you to a different page in the save dialog is unnecessary. Often I will want to preview the changes in order to write my edit summary, but I'm unable to view the two side-by-side.

If we can implement T105173 (HTML diffs), we can show those instantly with an option to switch to wikitext diff.