From: Sebastian Gniazdowski <sgniazdowski@gmail.com>
To: Peter Stephenson <p.w.stephenson@ntlworld.com>
Cc: Zsh hackers list <zsh-workers@zsh.org>
Subject: Re: [BUG] Long line makes pattern matching (by //) hog Zsh
Date: Sun, 5 Jun 2016 23:21:13 +0200 [thread overview]
Message-ID: <CAKc7PVDtANU9JPOEsTwY=r=b4b+OEZsXL1CZ=qFB7N-rP9WdXA@mail.gmail.com> (raw)
In-Reply-To: <20160605213951.4af7294a@ntlworld.com>
On 5 June 2016 at 22:39, Peter Stephenson <p.w.stephenson@ntlworld.com> wrote:
> We are maybe being naive in treating [...] expressions as if they are
> "simple". I think we have better protection against pathological
> backtracking for more complicated patterns.
>
> Does the following help?
It's slower with this patch:
3,02s user 0,02s system 99% cpu 3,064 total
vs
1,55s user 0,24s system 93% cpu 1,909 total
for pattern with first segment removed, i.e.: ([^0-9/\\\\ ]##[^/\\\\]#(#e))
Best regards,
Sebastian Gniazdowski
next prev parent reply other threads:[~2016-06-05 21:21 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-05 14:36 Sebastian Gniazdowski
2016-06-05 19:10 ` Bart Schaefer
2016-06-05 19:37 ` Peter Stephenson
2016-06-05 20:39 ` Peter Stephenson
2016-06-05 21:21 ` Sebastian Gniazdowski [this message]
2016-06-06 0:07 ` Bart Schaefer
2016-06-05 19:47 ` Sebastian Gniazdowski
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