Re: [PATCH] userdiff: add support for Swift

Shlok Kulshreshtha [off-list ref] writes:

Add a built-in userdiff driver for the Swift programming language so that
diff hunk headers and word diffs work out of the box for ".swift" files.

I do not work with this language myself, so I have no idea how well
the pattern proposed here matches real-world code.  Will queue, but
it needs reviews and validaion from active Swift users before it can
advance to 'next' and eventually to a future Git release.

Thanks.