Git Bash operate with cygwin

Question

I installed Git-Bash but I won't be able to access all the tools(vim,vimdiff) that I can access with Cygwin. Can that be set in one of the Git config files?

Answer 1

Git bash, and related tools in msysgit package, are pure Windows executables.

That's why you cannot run Cygwin tools into Git bash, since these are not completely windows programs (they need the cygwin.dll, see @fvu comment below).

If you want to use Git with Cygwin tools, you have to install the git package for Cygwin.