[racket] Behavior of file-exists? and directory-list

> One of my Racket projects scans the PATH directories to locate
> the Java executable, if one is installed.
>

If you're searching through PATHt, you should be able to use
find-executable-path.

http://docs.racket-lang.org/reference/Filesystem.html#(def._((lib._racket/private/misc..rkt)._find-executable-path))


For example:

   (find-executable-path "java.exe")
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