programming API to determine whether in "Cygwin environment"

[Christopher Faylor]

On Fri, Jul 11, 2008 at 08:34:17AM -0700, Karr, David wrote:
>The "ant" shell script checks to see if "`uname`" contains the string
>"CYGWIN". 

That just means that you have a Cygwin uname in your path.  It doesn't
mean you're necessarily running in a Cygwin "environment".  I thought the
intent was to print c:\foo at the CMD prompt and /cygdrive/c/foo when
running under some shell.

So, really the best test for that is the SHELL environment variable
containing just '/' and no '\' or ':'.  The Cygwin DLL doesn't mess with
that environment variable.

cgf

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