In the case of e.g. C Double-tap will correctly detect * as a potential
character a comment can start with. But * has special meaning in regular
expressions and in the case of Vim will trigger an error if not used
correctly.
Protect what Double-tap find by surrounding it in \V...\m. Thanks to
@utrack for the idea.
Fixes#5.
The default ftplugin/python.vim uses the b flag. I am unsure what other
flags are needed to be added to the pattern. From my reading of :help
'comments' this should be enough. I guess I'll just have to add them as
issues appear.