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Re: Regex Rules

From: Felix Lechner
Subject: Re: Regex Rules
Date: Thu, 10 Nov 2022 11:49:35 -0800


On Thu, Nov 10, 2022 at 11:39 AM Tobias Geerinckx-Rice <> wrote:
> ‘By default, Guile supports POSIX extended regular expressions.’ —

Yes, the word "extended" is often omitted. A good summary is here. [1]

POSIX adopted some, but not all, of the Perl Compatible Regular
Expressions (PCRE), which are more powerful but older. From the 'grep'
manual page (see the -E switch): "In basic regular expressions the
meta-characters ?, +, {, |, (, and ) lose their special meaning".

Kind regards
Felix Lechner


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