Set b:undo_indent

[dkearns]

See :help undo_indent for details.

[rust-highfive]

Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @chris-morgan (or someone else) soon.

Please see the contribution instructions for more information.

[chris-morgan]

Thanks for this; I’ve landed the intent of this patch in 4aa69b8 (differences: <lisp needed to be lisp<, and changing the names to the full forms which we use, and order to match).

[dkearns]

Sorry about the typo. I was updating all distributed indent files but it didn't seem worth automating until I'd already done most of them. ;)

There was also no consistent style and mixed seemed quite common so I stopped guessing.

Thanks for the excellent Vim support.