From: Oliver Kiddle <okiddle@yahoo.co.uk>
To: Borsenkow Andrej <Andrej.Borsenkow@mow.siemens.ru>
Cc: zsh-workers@sunsite.dk
Subject: Re: PATCH: += parameter assignments
Date: Mon, 17 Dec 2001 12:28:53 +0000 [thread overview]
Message-ID: <3C1DE505.AFA6AB06@yahoo.co.uk> (raw)
In-Reply-To: <000001c186f3$f4b82bd0$21c9ca95@mow.siemens.ru>
Borsenkow Andrej wrote:
>
> > One possible extension beyond what ksh does would be to also add a -=
> > assignment. It could be made to prepend to string and array values
> I would prefer += and =+ but that probably breaks ksh93 compatibility.
This issue wouldn't be ksh93 compatibility so much as backward
compatibility with old zsh scripts or any other scripts.
% a-=val
zsh: command not found: a-=val
% a=+val
% echo %a
+val
With `-' (or `+') not being legal inside identifiers -= only affects
anyone who happens to have a command with `-=' in its name - that should
be fairly rare. Affecting any script that assigns a variable with `+' as
the first character is much more likely to matter (a quick grep shows
two cases in the completion functions).
Do any other languages use `=+' as an operator. Anyone else have any
views on it?
Oliver
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next prev parent reply other threads:[~2001-12-17 12:29 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-17 12:02 Oliver Kiddle
2001-12-17 12:11 ` Borsenkow Andrej
2001-12-17 12:28 ` Peter Stephenson
2001-12-17 12:28 ` Oliver Kiddle [this message]
2002-01-07 17:38 ` Bart Schaefer
2002-01-14 12:45 Oliver Kiddle
2002-01-14 13:04 ` Peter Stephenson
2002-01-14 18:47 ` Bart Schaefer
2002-01-15 16:16 ` Oliver Kiddle
2002-01-15 17:54 ` Bart Schaefer
2002-01-16 14:43 ` Oliver Kiddle
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