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Re: coproc and existing variables

From: Grisha Levit
Subject: Re: coproc and existing variables
Date: Tue, 17 May 2016 17:14:33 -0400

On Sun, Apr 24, 2016 at 2:17 PM, Chet Ramey <address@hidden> wrote:

it seems reasonable to follow printf/read/mapfile and not overwrite read-
only variables used as coproc names.  getopts will remain an outlier.

getopts can probably benefit from a nameref check too, otherwise it can be exploited to unset arbitrary readonly variables.

$ declare -r RO=foo; declare -n OPTARG; getopts x x; declare -p RO
bash: declare: RO: not found

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