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From: Ruslan Ermilov <ru@FreeBSD.org>
Date: Fri, 2 Mar 2001 04:45:53 -0800 (PST)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/lib/libc/locale setlocale.c
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ru          2001/03/02 04:45:53 PST

  Modified files:
    lib/libc/locale      setlocale.c 
  Log:
  Fix setlocale() to conform to the ISO C and POSIX standards.
  The below text is quoted from the latest POSIX draft:
  
  : The values of locale categories shall be determined by a precedence
  : order; the first condition met below determines the value:
  :
  : 1. If the LC_ALL environment variable is defined and is not null,
  :    the value of LC_ALL shall be used.
  : 2. If the LC_* environment variable (LC_COLLATE, LC_CTYPE, LC_MESSAGES,
  :    LC_MONETARY, LC_NUMERIC, LC_TIME) is defined and is not null, the
  :    value of the environment variable shall be used to initialize the
  :    category that corresponds to the environment variable.
  : 3. If the LANG environment variable is defined and is not null, the
  :    value of the LANG environment variable shall be used.
  : 4. If the LANG environment variable is not set or is set to the empty
  :    string, the implementation-defined default locale shall be used.
  
  The conditions 1 and 2 were interchanged, i.e., LC_* were looked first,
  then LC_ALL, then LANG (note that LC_ALL and LANG were essentially the
  same, providing the default, with LC_ALL taking precedence over LANG).
  Now, LC_ALL and LANG serve the different purposes.  LC_ALL overrides
  any LC_*, and LANG provides the default fallback.
  
  Testcase:
  
  /usr/bin/env LC_ALL=C LC_TIME=de_DE.ISO_8859-1 /bin/date
  
  Should return date in the "C" locale format.
  
  Inspired by:	date(1) reference page in the Draft
  
  Revision  Changes    Path
  1.30      +4 -4      src/lib/libc/locale/setlocale.c


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