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Re: Insidious exit status bugs

X-seq: zsh-workers 4396
From: "Zefram" <zefram@xxxxxxxxx>
To: pws@xxxxxxxxxxxxxxxxx (Peter Stephenson)
Subject: Re: Insidious exit status bugs
Date: Fri, 25 Sep 1998 11:50:57 +0100 (BST)
Cc: zsh-workers@xxxxxxxxxxxxxxx
In-reply-to: <9809251009.AA12696@xxxxxxxxxxxxxxxxx> from "Peter Stephenson" at Sep 25, 98 12:09:50 pm

Peter Stephenson wrote:
>First: the exit status from the `...` or $(...) is being explicitly
>passed back as lastval, i.e. $?.  Why???  There's a variable cmdoutval
>whose only function in life is to remember that status to be assigned
>to lastval, so someone thought it was a good idea.

Assignments such as

	foo=$(grep -l foo *)

are supposed to set $? to the exit status of the $() command.  POSIX.2
clause 3.9.1 requires this.

-zefram

References:
- Re: Insidious exit status bugs
  - From: Peter Stephenson

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