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From: Vincent Lefevre <vincent@vinc17.org>
To: zsh-users@sunsite.dk
Subject: Unsetting a variable that was not previously set
Date: Fri, 4 Apr 2003 17:49:38 +0200	[thread overview]
Message-ID: <20030404154938.GE16102@greux.loria.fr> (raw)

zsh should return an exit status 0 when unsetting a variable that was
not previously set.

greux:~> zsh-beta -f
greux% echo $ZSH_VERSION
4.1.0-dev-7
greux% unset blah && echo OK
greux%

It should have printed 'OK'.

See
  http://www.opengroup.org/onlinepubs/007904975/utilities/unset.html

"Unsetting a variable or function that was not previously set shall
not be considered an error and does not cause the shell to abort."

The following shells print 'OK' as expected:
  * /bin/sh under Solaris
  * /bin/sh under OSF1
  * bash (under Linux)

-- 
Vincent Lefèvre <vincent@vinc17.org> - Web: <http://www.vinc17.org/> - 100%
validated (X)HTML - Acorn Risc PC, Yellow Pig 17, Championnat International
des Jeux Mathématiques et Logiques, TETRHEX, etc.
Work: CR INRIA - computer arithmetic / SPACES project at LORIA


             reply	other threads:[~2003-04-04 15:49 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-04-04 15:49 Vincent Lefevre [this message]
2003-04-04 16:09 ` Peter Stephenson
2003-04-04 16:29   ` Oliver Kiddle
2003-04-04 20:41   ` Vincent Lefevre

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