[BZ#691573] Automatically highlight files of matching name when the first file of a diff has been selected

Submitted by Tony Carington

Description

This is actually a feature request, but if this bugzilla supports those I couldn't find how to make one, sorry.

When doing a file diff the files being compared are often named the same or named with a common prefix. It would be a minor added convenience if, after the first file was picked, the file chooser dialog for the second file automatically highlighted files with the same name (or the same first few characters if you want to get fancy).

I haven't yet seen any diff tools that do that yet, and since meld is my favorite diff tool I figured this is where I'd suggest it first.