I want to run Emacs 23 on Cygwin, but when I install cygwin only emacs21 gets installed. How can I upgrade my existing Cygwin install to use Emacs23? I know emacs 23 is available since it's listed at this link. http://cygwin.com/packages/emacs/
When you're in the "Select Packages" step of Cygwin Setup:
One thing I noticed is that once emacs 23 is installed, Cygwin doesn't give you the option to uninstall it. I had to install emacs 21 and then it allowed me to remove emacs.