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From: Sebastian Gniazdowski <sgniazdowski@gmail.com>
Date: Sat, 10 Oct 2015 20:11:52 +0200
Message-ID: <CAKc7PVCvfEk2x6JmXwVLM3BWJw6FUZK-M5qkAMqW=xQ=zhAShQ@mail.gmail.com>
Subject: Re: Slowdown around 5.0.5-dev-0
To: Bart Schaefer <schaefer@brasslantern.com>
Cc: zsh-workers@zsh.org
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On 10 October 2015 at 19:58, Bart Schaefer <schaefer@brasslantern.com> wrote:
> On the other hand the shell really isn't intended to be manipulating
> arrays of containing tens of thousands of elements.

I was afraid that this will be stated, by you as the author of the
patch. It's just such a great thing that patterns are so fast, faster
than regular expressions (from zsh/regex). And that they are so
advanced. I can do fancy things like filtering for multiple words with
*foo*~^*bar*, colorizing output by using (#m) which is faster than
(#b) and provided for someone aware to utilize that gain and
functionality. What I mean is that we shouldn't now slip into "shell
isn't for that, anyway" after providing so much.

PS. Not everything is so great, I was successfully optimizing my code
by changing if[] into [] && || in crucial places. Removing variables
as even a single assignment seems to cost much. But overall there's
plenty in speed and functionality.

Best regards,
Sebastian Gniazdowski