vim & ruby

Also see

• syntax-checking
• repl (Also have a look at pry which also supports completion and the like)

debugging

• vim-addon-rdebug (This seems to always work in some way for all ruby versions because it only depends on require 'debug')
• vim-addon-ruby-debug-ide
• vdebug
• vim-ruby-debugger (The last time I tried this it failed stepping even 10times, please correct me if I did something wrong)

Debugging libraries:

• ruby-debug-ide (linecache, ruby-debug-base) (only works nicely up to ruby 1.9.2 or older?)
• debugger (1.9.3/ 2.0?)
• byebug (eg use https://github.com/astashov/debugger-xml which providesr rdebug-ide to talk to Vim?)

completion

• vim-ruby