I am using vim/gvim for 4 months already and now I found a way to use it's strengths. My tags file is generated very well and here is a simple row in it. my.namespace.classname /path/to/file.js /^my.namespace.classname = function(first_arg,$/;" f Here is an example what i need to omnicomplete: my.namespace.cla <- omnicomplete list with all classnames in the my.namespace The above is the key to my problem, because it looks like omnicomplete searches only namespace without including "my." in front of it. So i see other element in the omnicomplete list and not my classname at all. However, if i type :tag my.namespace.classname for example gvim opens the correct file at the correct position. What is wrong and how can I make it work?