solved
On Tue, 16 Jun 2015, Michael Hennebry wrote:
Is there a way to automatically cause gvim's current directory to be the directory of the edited file?
Searching on "working directory" worked better than searching on "current directory"
In my ~/.vimrc file: command CDC cd %:p:h
:CDC will do what I want.
I found it here: http://vim.wikia.com/wiki/Set_working_directory_to_the_current_file