ctags is a tool that figures out where various functions, classes, etc. are defined. Using ctags, you can use a hot key to jump to the definition of the symbol under the cursor. To get started, install exuberant-ctags. In Ubuntu, this is just "apt-get install exuberant-ctags". Now, from within Vim: :cd project_root :!ctags -R . :set tags=tags To jump to the definition of the symbol under the cursor, use cntl-]. To get back to where you were, use cntl-o. There's also a taglist plugin for Vim. Once you install that, you can use ":TlistToggle" to open up a window on the left that shows all the things defined in your open files. I have that mapped to "T" by putting the following in my .vimrc: "map T :TlistToggle<CR>". Thanks to Benjamin Sergeant for helping me get started with ctags.
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