Date: Wed, 25 Jul 2007 12:47:56 +0400 From: Andrey Chernov <ache@nagual.pp.ru> To: "Daniel O'Connor" <doconnor@gsoft.com.au>, sergei@FreeBSD.org, scf@FreeBSD.org Cc: freebsd-current@FreeBSD.org Subject: Re: zsh oddities with recent -current Message-ID: <20070725084755.GA75871@nagual.pp.ru> In-Reply-To: <200707251733.12658.doconnor@gsoft.com.au> References: <200707251733.12658.doconnor@gsoft.com.au>
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--AhhlLboLdkugWU4S Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Jul 25, 2007 at 05:33:05PM +0930, Daniel O'Connor wrote: > I updated my -current box (laptop) on the 18th and I have 2 strange=20 > issues with zsh. >=20 > 1) I can't unset environmental variables set before the shell started,=20 > eg.. zsh uses system's putenv() but home-rolled delete from environment=20 (instead of unsetenv()). It clearly violates POSIX since it forbids to mix= =20 putenv/setenv/unsetenv with direct environ manipulations: "Conforming applications are required not to modify environ directly, but= =20 to use only the functions described here to manipulate the process=20 environment as an abstract object. Thus, the implementation of the=20 environment access functions has complete control over the data structure= =20 used to represent the environment (subject to the requirement that environ= =20 be maintained as a list of strings with embedded equal signs for=20 applications that wish to scan the environment). This constraint allows=20 the implementation to properly manage the memory it allocates, either by=20 using allocated storage for all variables (copying them on the first=20 invocation of setenv() or unsetenv()), or keeping track of which strings=20 are currently in allocated space and which are not, via a separate table=20 or some other means." Quick fix will be just to disable HAVE_PUTENV config option. It gains=20 nothing in the code but makes troubles. --=20 http://ache.pp.ru/ --AhhlLboLdkugWU4S Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQFGpw47Vg5YK5ZEdN0RAgqTAKCDzLpnu6bRVhuPr4FSb9eH9pxVpgCeIWcc Nqq3g83PVR7wmPNnDzPoqdw= =pcfA -----END PGP SIGNATURE----- --AhhlLboLdkugWU4S--
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