Re: Old version of vgrind no longer working

[Damian McGuckin]

On Sun, 25 Dec 2022, Ralph Corderoy wrote:

> It's the first expression which is the problem.
>
>    $ sed -e 's%[[./*$^\\]%\\&%g' </dev/null
>    sed: -e expression #1, char 18: unterminated `s' command
>    $ sed -e 's%.*%/^&:/d%' </dev/null
>    $

Thanks for that help. It was way beyond my 'sed' skill level.

> It's because ?[? represents itself inside a character class unless it's
> followed by a colon, dot, or equals because then it looks like the start
> of a ?[:digit:]? or similar.  Re-ordering works:
>
>    $ sed -e 's%[.[/*$^\\]%\&%g' </dev/null

Thanks. That works.  Strange that the buggy one worked for 2 decades.

Regards - Damian

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