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Re: Option "-n" not working reliably and poorly documented


From: Paul Jarc
Subject: Re: Option "-n" not working reliably and poorly documented
Date: Wed, 11 Feb 2009 16:02:13 -0500
User-agent: Gnus/5.11 (Gnus v5.11) Emacs/22.1 (gnu/linux)

Jon Seymour <address@hidden> wrote:
> Not sure this is correct. The ] is parsed by the shell

It's parsed by the [ command.  That happens to be a builtin command,
so yes, it is done by the shell, but it is not part of the grammar of
the shell language.

> This is why the -n option reports an error, since -n suppresses
> command execution.

-n *doesn't* report an error, because it only checks that the script
satisfies the shell grammar.  It doesn't verify that the arguments of
builtin commands are meaningful.


paul




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