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bug#19193: Announcing "untangle" for Grep 2.21; R.I.P. Dad

From: sur-behoffski
Subject: bug#19193: Announcing "untangle" for Grep 2.21; R.I.P. Dad
Date: Thu, 12 Feb 2015 10:53:30 +1030
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0

On 11/27/14 10:16, Jim Meyering wrote:
On Wed, Nov 26, 2014 at 5:38 AM, behoffski <address@hidden> wrote:

Congratulations to all on the GNU Grep 2.21 release.

I'm continuing my attempt to do a "bottom-up" refactoring of the code to
it more modular, via the Lua script "untangle" that you've seen recently.
This email contains an updated version of the script, tracking the changes
to the sources (especially to dfa.c) since the last release.

Thanks for your continuing effort to contribute, and sorry to hear
about your dad.

I like your idea (mentioned off-list) to pursue this in its own project,
so it will be separate from GNU grep, at least until you can
show significant performance gains.

G'day Jim (replying via bug-grep list),

Done (finally).  See "hstbm", which is sometimes two or even three times
faster than GNU Grep 2.21 on my machine (amd64, Gentoo GNU/Linux) for
selected search patterns:

The Savannah folks have kindly agreed to host hstbm as a non-GNU
project at:


The release can be downloaded as a separate tarball from:


Git users probably want to clone the repository instead; the
latest sources (which may include changes after the 0.13 release)
can be retrieved via "git clone":

    git clone git://git.savannah.nongnu.org/hst


sur-behoffski (Brenton Hoff)
Programmer, Grouse Software

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