let ruby_operators = 1

syn match Operator /\.\(class\)\@!/
syn match Operator /[?+*;,<>&!~=-]/
syn match Operator /||\||=\||\(\d\)\@=\||\(\w\)\@!\(.\{-\}|\)\@!/


syn match _rubyFunction /\(\.\|\s\|^\)\@<=\w\+\((\)\@=/
hi link _rubyFunction Function
hi link rubyRoute Type
hi link rubyValidation Type

syn region rubyBlockParameterList matchgroup=Operator start="\%(\%(\<do\>\|{\)\_s*\)\@32<=|" end="|" oneline display contains=rubyBlockParameter