how do I detect OS X in my .vimrc file, so certain configurations will only apply to OS X?

Question

I use my .vimrc file on my laptop (OS X) and several servers (Solaris & Linux), and could hypothetically someday use it on a Windows box. I know how to detect unix gene

Answer 1

homebrew vim and MacVim returns true for has('mac'), however so does has('unix'). so to have it work across all unix platforms, a possible solution is:

if has('unix')
  if has('mac')       " osx
    set guifont=...
  else                " linux, bsd, etc
    set guifont=...
  endif
elseif has('win32') || has('win64')
  set guifont=...
endif

on the other hand, as of el capitan, the system vim returns false for has('mac'), and uname snooping is probably the way to go. it's an ancient version, never used it.