> "foo\:bar" is a file name with a colon in it. "foo:bar" is an ADS named bar on the file foo. That does not make sense. The shell does not itself know anythi

> "foo\:bar" is a file name with a colon in it. "foo:bar" is an ADS named bar on the file foo. That does not make sense. The shell does not itself know anything about ADSs, and therefore, in both cases, sends the string "foo:bar" as arguments to commands.