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Re: bash optimization away question


From: Andreas Kähäri
Subject: Re: bash optimization away question
Date: Sun, 3 Nov 2024 09:16:49 +0100

On Sun, Nov 03, 2024 at 01:29:02AM +0100, #!microsuxx wrote:
> is a
> 
> var=${var:-blabla}
> 
> optimized away to no exec at all
> if var is not empty
> ?
> 
> also same for = := -

There is already no exec involved in the expansion of the parameter.

What do you expect to gain from optimizing this away, compared to
optimizing something else?  Compared to actually executing an external
command, the time spent on this is negligible.

-- 
Andreas (Kusalananda) Kähäri
Uppsala, Sweden

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