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From: Xin LI <delphij@FreeBSD.org>
Date: Tue, 14 Dec 2010 01:16:56 +0000 (UTC)
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Subject: cvs commit: src/usr.bin/printf printf.c
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delphij     2010-12-14 01:16:56 UTC

  FreeBSD src repository

  Modified files:
    usr.bin/printf       printf.c 
  Log:
  SVN rev 216423 on 2010-12-14 01:16:56Z by delphij
  
  IEEE Std 1003.1-2008, Section 1.4, Utility Description Defaults says
  that when the options section is listed as "None", utility shall
  recognize "--" as a first argument to be discarded.
  
  This implementation is largely based on OpenBSD implementation but
  we do slightly differently:
  
  a) We skip argv[0] as the first step;
  b) We test whether the next argument is "--" and ignore it.
  
  With this change one will get:
  
  %printf
  usage: printf format [arguments ...]
  %printf -v
  -v%printf -- -v
  -v%
  %printf --
  usage: printf format [arguments ...]
  
  Which matches the behavior observed on a Debian system but different
  from the Illumos change.
  
  Revision  Changes    Path
  1.45      +10 -10    src/usr.bin/printf/printf.c