Question

Is there some way in which I can read the filename being passed to source, when the SourcePre autocommand is triggered?

eg:

au SourcePre */plugin/*.vim set runtimepath=/usr/share/vim/vim71/{INSERT-Plugin-Dir-Name}
source /root/.vim/bundle/minibufexpl.vim_-_Elegant_buffer_explorer/plugin/minibufexpl.vim

I’d like to replace this {INSERT-Plugin-Dir-Name} with "minibufexpl.vim_-_Elegant_buffer_explorer"

Answer 1

Use <afile> to get name of the file being sourced. You can use expand() to turn it into a full path and get the bit you want. For example, in your line:

source /root/.vim/bundle/minibufexpl.vim_-_Elegant_buffer_explorer/plugin/minibufexpl.vim

You could do:

expand('<afile>:p:h:h')

The :p turns it into a full path (in case you do cd /path/to/plugin, :source filename.vim); each :h strips one part of the path off the end.

Note that this won’t work in a :set line. Use :let-& instead:

let &runtimepath='/usr/share/vim/vim71/' . expand('<afile>:p:h:h>')

See:

:help SourcePre
:help expand()
:help :let-&