Show changes don't work with URL (and maybe other insets)

[racoon]

Open and typeset the attached file with a deleted URL and active show changes. It shows both the actual and expected result.

Daniel

Notes: While the current algorithm seems fine for some insets, like footnotes, it falters at other insets, like URL, which do not interpret its content as LaTeX code.

show_changes_url.lyx
Description: application/lyx