@jacknagel The [POSIX spec](
http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap03.html#tag_03_395)
indeed appears to confirm that, if in a roundabout way. I never knew that
before; in 20 years in various sorts of Unix development, it had never come
up. Thanks for the info!

-- 
Marnen Laibow-Koser
marnen@marnen.org
http://www.marnen.org

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