I'm not getting syntax coloring in vim (using Cygwin)

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http://unix.stackexchange.com – I've been so far unable to figure out why vim's syntax coloring is not working for most files, and it's driving me batty. In case this is relevant: I'm working in Cygwin (more specifically/accurately the bash shell that comes with Git for Windows) because it's the only thing I've been able to smuggle into this Windows shop so far. (I sometimes bring in my MacBook Air but it is somewhat frowned upon. Also, as with most Windows shops they're paranoid about installing software, so a full Cygwin installation would need justification. Also, I'm not using gvim because I prefer to work with vim (HowTos)