How can I jump to a function definition using Vim? For example with Visual Assist, I can type Alt+g under a function and it opens a context menu listing the files with definitions.
How can I do something like this in vim?
Use ctags. Generate a tags file, and tell vim where it is using the :tags command. Then you can just jump to the function definition using Ctrl-]
There are more tags tricks and tips in this question.