GitLab

(ruby-smie-grammar): Add - and +.
(ruby-smie--redundant-do-p, ruby-smie--forward-id)
(ruby-smie--backward-id): New functions.
(ruby-smie--forward-token, ruby-smie--backward-token): Use them.
(ruby-smie-rules): Handle hanging do.  Get rid of hack, not needed
any more.
* test/indent/ruby.rb: Add a few more tests; adjust some indentation.