Rooter is a Vim plugin which changes the working directory to the project root when you open a file.
More accurately, it'll do this when you open a typical webapp file. These files are identified by their extension.
The project root is identified by the presence of known directory, such as a VCS directory, or file, such as a Rakefile. Currently git, darcs, mercurial, bazaar, and subversion are supported.
By default you don't need to do anything: vim-rooter will change the working directory automatically.
You can always invoke vim-rooter manually with <Leader>cd.
You can change the manual-invocation mapping by adding this to your .vimrc:
map <silent> <unique> <Leader>foo <Plug>RooterChangeToRootDirectory
where <Leader>foo is the mapping you want.
You can change the file extensions which trigger vim-rooter with autocommands
in ~/.vim/after/plugin/vim-rooter.vim. You'll need to create this file, and
possibly the directories, yourself.
To add a file extension, e.g. foo:
autocmd rooter BufEnter *.foo :Rooter
To remove a file extension, e.g. js:
autocmd! rooter BufEnter *.js
To stop vim-rooter changing directory automatically, add this to your .vimrc:
let g:rooter_manual_only = 1
You can set your own directory and file patterns like this:
let g:rooter_patterns = ['Rakefile', '.git/']
Note this overwrites the default patterns. Also note directories should have a trailing slash.
Finally you can have vim-rooter locally change directory (:lcd) instead of
changing directory (:cd) by adding this to your .vimrc:
let g:rooter_use_lcd = 1
Install into ~/.vim/plugin/rooter.vim or, if you're using Pathogen, into
~/.vim/bundle/rooter.vim.