Re: Command substitution and errexit

[Nikolai Kondrashov]

On 10/16/2012 03:08 AM, DJ Mills wrote:
> Do not use for to iterate over the output of an unquoted command
> substitution.

Well, I wanted to keep it simple in this case.

> Instead, use a while read loop.
> See http://mywiki.wooledge.org/DontReadLinesWithFor and
> http://mywiki.wooledge.org/BashFAQ/001

Thanks, that FAQ is really useful.

> I also don't understand the point of using a regex like that, seems to
> be way more complicated than it needs to be. A simple glob will
> suffice here.
>
> Assuming you're writing bash and not POSIX sh:
>
> while read -r attr state; do
>    if [[ $shellopts = *:"$attr":* ]]; then
>      set -o "$attr"
>    else
>      set +o "$attr"
>    fi
> done<  <(set -o)

As you point out later, it won't work, but thanks, that's a nice trick with
"read" and process substitution - didn't think of it.

Sincerely,
Nick