I have installed Janus to improve my vim. All works fine, except for the Ri documentation, that opens on hovering a keyword. On my installation it shows the output of "ri --help" instead of the documentation of the keyword.
I have found a way to disable it, but I'd rather just fix it. I am using gvim on Ubuntu 11.10.
What is the name of the plugin or script that offers these tooltips?
Could it have anything to do with RVM being active?
The problem is a bug in the ruby.vim plugin. That triggers ri with a wrong argument.
There is a bug report for this.
Solving is easy: edit file .../ftplugin/ruby.vim and change line 194: the -f argument should not be simple, but either bs or ansi. I had success with bs.