Re: master 3d38d1d: Add sqlite3 support to Emacs

[<tomas@tuxteam.de>]

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On Wed, Dec 15, 2021 at 11:41:08PM -0500, Richard Stallman wrote:
> [[[ To any NSA and FBI agents reading my email: please consider    ]]]
> [[[ whether defending the US Constitution against all enemies,     ]]]
> [[[ foreign or domestic, requires you to follow Snowden's example. ]]]
> 
>   > The use case is to load the pcre module, which will allow us to list
>   > stored data based on regexp matches.  I.e., it will give users greater
>   > power to inspect .sqlite files.
> 
> Would you please tell me more about the PCRE module?
> Where is it distributed -- along with sqlite3 itself?

PCRE ("Perl Compatible Regular Expressions") is a C library written by
Philip Hazel (founding author of the Exim mail server). I think it was
originally written to have some more expressive "regular" [1] expressions
in Exim itself, but showed some worth as an independent library, so it
was released as such, under the BSD, to encourage use (Exim is GPLV2).

It tries to be compatible to Perl's regular expression machinery; it is
used in many systems, among other PHP, R, PostgreSQL.

There is a (not javascript-crippled, yay!) website at
https://www.pcre.org/. Distribution is via github, alas.

Cheers

[1] All those go beyond strict regular expressions, in the strict sense
   of the Chomsky hierarchy.

-- 
t

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