Having just downloaded and installed vim (gvim) on my Mac (Mac OS X 10.5.x to be precise), and then struggling for a while to set the default font, I thought I'd make a brief note here about how to set the default font properly.
Setting a default gvim font in the gvimrc file
To set a default font for the gvim editor (in my case on Mac OS X), edit a file named
~/.gvimrc (i.e., a file named
.gvimrc in your home directory), and add this line to get a 12-point Monaco font: