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To: zsh-workers@math.gatech.edu (ZSH Workers Mailing List)
Subject: Re: bug in zsh-2.6-beta21
References: <199606251855.UAA03602@woodstock.ens-lyon.fr>
From: Hrvoje Niksic <hniksic@srce.hr>
Date: 25 Jun 1996 21:15:55 +0200
In-Reply-To: Vincent Lefevre's message of Tue, 25 Jun 1996 20:55:26 +0200 (MET DST)
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Vincent Lefevre (Vincent.Lefevre@lip.ens-lyon.fr) wrote:
> This is OK. But under zsh 2.6-beta21:
> 
> $ var=`echo "ab\ncd\nef"`
> $ echo $var
> ab
> cd
> ef
> $ var=`echo "ab\ncd\nef\n"`
> $ echo $var
> ab
> cd
> ef
> $
> 
> The last "\n" is not printed.

I think this is good behaviour sh, ksh and bash also strip trailing
newlines. It should maybe be documented in the manual. E.g. bash
manual states:
              $(command)
       or
              `command`
       Bash performs  the  expansion  by  executing  command  and
       replacing  the command substitution with the standard out-
       put of the command, with any trailing newlines deleted.

Whereas zsh manual says:
       A  command  enclosed  in  parentheses preceded by a dollar
       sign, like so: $(...) or quoted with grave accents:  `...`
       is replaced with its standard output.  If the substitution
       is not enclosed in double quotes,  the  output  is  broken
       into  words  using  the  IFS  parameter.  The substitution

Removing trailing newlines is *not* specifically mentioned.

-- 
hniksic@srce.hr              |  Student of electrical engineering
hniksic@fly.cc.fer.hr        |  University of Zagreb, Croatia
------------------------------------------------------------------
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