From: Bart Schaefer <schaefer@brasslantern.com>
To: ZSH Users <zsh-users@sunsite.dk>
Subject: Re: Are there "binary" variables?
Date: Fri, 02 Jun 2006 22:51:35 -0700 [thread overview]
Message-ID: <060602225135.ZM20992@torch.brasslantern.com> (raw)
In-Reply-To: <m3irnjccn4.fsf@jin.myrkraverk.com>
On Jun 3, 12:21am, Johann 'Myrkraverk' Oskarsson wrote:
}
} specifically, is there a way to compare ^E to 5 and get true?
In the manual under "Arithmetic Evaluation", a few pages down:
An expression of the form `##X' where X is any character sequence such
as `a', `^A', or `\M-\C-x' gives the ASCII value of this character and
an expression of the form `#FOO' gives the ASCII value of the first
character of the value of the parameter FOO.
zsh% print $((##\C-e))
5
zsh% ((##\C-e == 5)) && print It is 5 || print It is not 5
It is 5
zsh%
In the manual under "Quoting":
A string enclosed between "$'" and "'" is processed the same way as the
string arguments of the print builtin, and the resulting string is
considered to be entirely quoted.
zsh% print $'\5' | cat -v
^E
zsh% ctrlE=$'\5'
zsh% print $((#ctrlE))
5
zsh%
prev parent reply other threads:[~2006-06-03 5:51 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-03 0:21 Johann 'Myrkraverk' Oskarsson
2006-06-03 2:39 ` Philippe Troin
2006-06-03 2:41 ` Philippe Troin
2006-06-03 5:51 ` Bart Schaefer [this message]
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