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Date: Fri, 30 Nov 2012 15:34:00 -0000
From: Jerome Guitton <guitton@adacore.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: gdb-patches@sourceware.org
Subject: Re: [RFA/mingw32] environment variables are case-insensitive on win32
Message-ID: <20121130153401.GH2768@adacore.com>
References: <1354282597-22691-1-git-send-email-guitton@adacore.com> <834nk7urs0.fsf@gnu.org> <20121130140844.GF2768@adacore.com> <83y5hjt8ll.fsf@gnu.org>
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Eli Zaretskii (eliz@gnu.org):

> This is Bash, not Cygwin.  What happens if you define an environment
> variable outside of a Cygwin program, and then use getenv in a Cygwin
> program with different letter-case?

I tried something similar actually:

#include <stdio.h>
#include <stdlib.h>

int
main()
{
  char *name;

#if defined(_WIN32) && !defined(__CYGWIN__)
  _putenv ("foobar=set");
#else
  setenv("foobar", "set", 1);
#endif
  name = getenv("FooBar");

  if (name && strcmp (name, "set") == 0)
    printf ("not case sensitive\n");
  else
    printf ("case sensitive\n");

  return 1;
}


Same result: case sensitive.