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Re: read broken in beta21

X-seq: zsh-workers 1433
From: Zoltan Hidvegi <hzoli@xxxxxxxxxx>
To: A.Main@xxxxxxxxxxxxxxxxx (Zefram)
Subject: Re: read broken in beta21
Date: Mon, 24 Jun 1996 19:38:10 +0200 (MET DST)
Cc: A.Main@xxxxxxxxxxxxxxxxx, zsh-workers@xxxxxxxxxxxxxxx
In-reply-to: <8282.199606241720@xxxxxxxxxxxxxxxxxxxxxxx> from Zefram at "Jun 24, 96 06:20:36 pm"
Organization: Dept. of Comp. Sci., Eotvos University, Budapest, Hungary
Phone: (36 1)2669833 ext: 2667, home phone: (36 1) 2752368

> >What is sh?
> 
> I was referring to the Bourne shell.
> 
> > The line shall be split into fields (see the definition in 3.1.3) as in
> > the shell (see 3.6.5); the first field shall be assigned to the first
> > variable var, the second field to the second variable var, etc.  If there
> > are fewer var operands specified than there are fields, the leftover
> > fields and their intervening separators shall be assigned to the last
>                    ^^^^^^^^^^^
> > var. If there are fewer fields than vars, the remaining vars shall be set
> > to empty strings.
> 
> It sounds to me like trailing IFS characters are not *intervening*
> separators, and should therefore be removed.

non-whitespace IFS characters (NWICs) always separate fields.  A trailing
NWIC separate a trailing empty field from the other fields.  E.g.

% IFS=/ ; set -- $IFS ; echo $#
2

So the trailing NWICs are intervening separators between empty fields.

Zoltan

References:
- Re: read broken in beta21
  - From: Zefram

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