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Re: list-print-separator
From: |
Ted Zlatanov |
Subject: |
Re: list-print-separator |
Date: |
Mon, 25 Apr 2011 10:01:17 -0500 |
User-agent: |
Gnus/5.110016 (No Gnus v0.16) Emacs/24.0.50 (gnu/linux) |
On Mon, 25 Apr 2011 11:51:46 -0300 Stefan Monnier <address@hidden> wrote:
SM> Hmm... I wouldn't try to compare the speed of `print' with that of `pp'
SM> since they do very different amounts of work and are implemented in
SM> languages whose performance is very different, but there's clearly room
SM> for improvement in pp's speed.
>> I want to print out a large ELisp data structure prettily. The Gnus
>> newsrc.eld, for example, or the Gnus registry hashtable. I'll use
>> whatever makes it happen as fast as possible.
SM> The newsrc.eld has never been pretty and it's never been a problem,
SM> AFAIK.
It's unreadable without newlines so you need manual fixups to look at it
when things go wrong.
SM> Not sure what's the "Gnus registry", so I can't comment on that.
It's a large hashtable with lots of alist members.
>> With my list-print-separator patch you get fast and OK-looking.
>> Are you concerned it's only useful sometimes? The speed penalty is
>> minor if it's not used.
SM> I'd rather make `pp' faster, or if it's too difficult split it into
SM> a "print-really-pretty" and "print-quickly-and-not-too-ugly".
The users most likely to benefit, at least for Gnus where I have
experience supporting them, are those who can't read ELisp well. They
are also less likely to complain or roll their own solution. So I hope
you see that this is not a "print pretty" request but a real need for
any package that uses ELisp's build-in serialization. I'm concerned
that your "good enough" solution will not be adopted because it will be
much slower than the native `print' serialization, and optimizing it is
much more work than my proposed patch of 4 lines.
Ted
- entry separator for printing hashtables, Ted Zlatanov, 2011/04/06
- list-print-separator (was: entry separator for printing hashtables), Ted Zlatanov, 2011/04/21
- Re: list-print-separator, Stefan Monnier, 2011/04/24
- Re: list-print-separator, Ted Zlatanov, 2011/04/24
- Re: list-print-separator, Stefan Monnier, 2011/04/25
- Re: list-print-separator, Ted Zlatanov, 2011/04/25
- Re: list-print-separator, Stefan Monnier, 2011/04/25
- Re: list-print-separator,
Ted Zlatanov <=
- Re: list-print-separator, Stefan Monnier, 2011/04/25
- Re: list-print-separator, Ted Zlatanov, 2011/04/25
- Re: list-print-separator, Thierry Volpiatto, 2011/04/25
- Re: list-print-separator, Stefan Monnier, 2011/04/25
- Re: list-print-separator, Eli Zaretskii, 2011/04/25
- Re: list-print-separator, Stefan Monnier, 2011/04/25
- Re: list-print-separator, Andy Moreton, 2011/04/25
- Re: list-print-separator, Ted Zlatanov, 2011/04/25
- Re: list-print-separator, Andy Moreton, 2011/04/26
- Re: list-print-separator, Stefan Monnier, 2011/04/26