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Re: Feature Request: scanf-like parsing

From: Léa Gris
Subject: Re: Feature Request: scanf-like parsing
Date: Mon, 25 Jan 2021 19:20:05 +0100
User-agent: Telnet/1.0 [tlh] (PDP11/DEC)

Le 25/01/2021 à 18:58, Oğuz écrivait :

I rarely use eval, but when I do, it works just fine. I can't really agree
with the sentiment of your article, sorry.

I use eval when I am sure there is no other safer way.

Mean, if I can achieve the same with declare foo="dynamically generated content" I opt for the later, like mapping a whole file into an associative array in one go instead of iterating incrementing the array line by line. Because I know it can be done for a declare and the content is generated with printf %q or jq's @sh filter.

Anyway on systems where there is a sufficiently advanced Bash available for these nice advanced bashisms, There are probably better all-purpose scripting languages available as well like Python or Perl.

For obsolete closed-source systems where I don't have control on if a decent Bash version is available, using the nice Bash feature is not an option anyway, and sometimes, yes eval will help.

Léa Gris

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