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From: Wolfgang Jenkner <wjenkner@inode.at>
To: Pedro Giffuni <pfg@FreeBSD.org>
Cc: Baptiste Daroussin <bapt@FreeBSD.org>,  current@FreeBSD.org
Subject: Re: [CFT] Unicode collation string and reworked locale definitions
Date: Tue, 03 Nov 2015 16:52:52 +0100
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On Tue, Nov 03 2015, Pedro Giffuni wrote:

> What worries me about libtre is that it lacks important functionality lik=
e word
> delimiters. We even brought the sysv delimiters to be more compatible with
> Solaris and GNU and we can=E2=80=99t back those out now:
>
> https://svnweb.freebsd.org/base?view=3Drevision&revision=3D268066

It supports \< and \> out of the box, cf.

https://github.com/laurikari/tre/blob/master/doc/tre-syntax.html

And the darwin patch mentioned above implements [[:<:]] and [[:>:]], see

http://www.opensource.apple.com/source/Libc/Libc-1044.40.1/regex/TRE/lib/tr=
e-parse.c

That patch also implements the REG_STARTEND flag for regexec(3), which
is needed for vi.

Also, tre provides wchar versions for regcomp(3) and friends, so that
nvi wouldn't need its own private regex library anymore.