bug-bash
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: "unset var" pops var off variable stack instead of unsetting it


From: Greg Wooledge
Subject: Re: "unset var" pops var off variable stack instead of unsetting it
Date: Mon, 20 Mar 2017 08:04:33 -0400
User-agent: Mutt/1.4.2.3i

On Fri, Mar 17, 2017 at 09:51:34PM +0000, Stephane Chazelas wrote:
> Then, the "unset", instead of unsetting IFS, actually pops a
> layer off the stack.

> Credits to Dan Douglas
> (https://www.mail-archive.com/address@hidden/msg00707.html)
> for finding the bug. He did find a use for it though (get the
> value of a variable from the caller's scope).

Isn't this exactly the same as the "upvar" trick that Freddy Vulto
discovered?  http://www.fvue.nl/wiki/Bash:_Passing_variables_by_reference



reply via email to

[Prev in Thread] Current Thread [Next in Thread]