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Re: printf and POSIX compliance
- X-seq: zsh-workers 18220
- From: Oliver Kiddle <okiddle@xxxxxxxxxxx>
- To: Stephane CHAZELAS <Stephane.CHAZELAS@xxxxxxx>
- Subject: Re: printf and POSIX compliance
- Date: Tue, 11 Feb 2003 09:29:51 +0100
- Cc: zsh-workers@xxxxxxxxxx
- In-reply-to: <20030204164425.A192@xxxxxxxxxxxxxxxxxx>
- Mailing-list: contact zsh-workers-help@xxxxxxxxxx; run by ezmlm
- References: <20030204164425.A192@xxxxxxxxxxxxxxxxxx>
- Sender: kiddleo@xxxxxxxxxx
On 4 Feb, you wrote:
> Hello all, and thank you for the very good job
> I read at
> that, according to POSIX:
> 3- In addition to the escape sequences shown in the Base
> Definitions volume of IEEE Std 1003.1-2001, Chapter 5, File
> Format Notation ( '\\' , '\a' , '\b' , '\f' , '\n' , '\r' ,
> '\t' , '\v' ), "\ddd" , where ddd is a one, two, or
> three-digit octal number, shall be written as a byte with the
> numeric value specified by the octal number.
> printf '\377\0377' | od -c
> should return:
> 0000000 377 037 7
Okay, that's what printf(3) and ksh93's printf do.
> zsh man pages says that sames sequences as for echo are
> recognized. That's not what POSIX requires.
It uses the same code as for echo and $'...' and doing otherwise would
seem a bit unpleasant to me. That said, it seems to be what ksh93 does.
In ksh, $'...' and printf work that way while print does something
Note also that the behaviour of \c should probably be to cancel further
output in printf but it isn't (again because I used the same function
as is used by echo).
It's an easy enough thing to change though. Should I? And what should
it do for print and for posix quotes?
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