Path: csiph.com!newsfeed.hal-mli.net!feeder3.hal-mli.net!newsfeed.hal-mli.net!feeder1.hal-mli.net!newsfeed.xs4all.nl!newsfeed3.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail
Return-Path: <rosuav@gmail.com>
X-Original-To: python-list@python.org
Delivered-To: python-list@mail.python.org
X-Spam-Status: OK 0.020
X-Spam-Evidence: '*H*': 0.96; '*S*': 0.00; '16,': 0.03; 'bits': 0.09; 'filename': 0.09; '16-bit': 0.16; 'filename,': 0.16; 'from:addr:rosuav': 0.16; 'from:name:chris angelico': 0.16; 'roy': 0.16; 'subject:3.3': 0.16; 'subject:python': 0.16; 'sat,': 0.16; 'wrote:': 0.18; 'bit': 0.19; 'tend': 0.24; 'looks': 0.24; '15,': 0.26; 'header:In-Reply-To:1': 0.27; 'am,': 0.29; 'characters': 0.30; 'message-id:@mail.gmail.com': 0.30; 'url:wiki': 0.31; 'moderate': 0.31; 'restricted': 0.31; 'url:wikipedia': 0.31; 'work:': 0.31; 'fri,': 0.33; "can't": 0.35; 'anywhere': 0.35; 'anybody': 0.35; 'but': 0.35; 'received:google.com': 0.35; 'there': 0.35; 'scheme': 0.36; 'url:org': 0.36; 'represent': 0.38; 'nov': 0.38; 'to:addr:python-list': 0.38; 'sure': 0.39; 'to:addr:python.org': 0.39; 'how': 0.40; 'smith': 0.68; 'extensions.': 0.84; 'preset': 0.84; 'presumably': 0.84; '2013': 0.98
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=mVFey8eui9+gBpt5hWDVnVaaHfbLebWKwHAdEgHv+WQ=; b=PtJ0eDmH795GKFbfCkMoWgt4EGAAG87C0hCKaZYEuJyJRdb/3+WIb8oe5zPqqyPZDu Olw5Dy3/090xjgItJqb68qNdSRnJmKrLO8tAYZmM9pw2OT/FAdTTBvEOKRBd5qYutpwT ITtMCp57DeOXJkGAUFGH+78JAIgZLVHO9z/ZWez+h+K442z+AzI4yqbtQ1TbdSySmW/3 pI/kAjCFnJ7zjzXmQmn6JJa2iCgaDmqKDFRiD15k+atnjcZHEFwl9M28Z+/McFMX7ogb 5lZDInmsNumGUITT/9q1lp55rtSHQBVU5Bpqq9kk1fzjbnq+hcVjYyTdJ/GU+3Uw3y9E bykw==
MIME-Version: 1.0
X-Received: by 10.68.234.165 with SMTP id uf5mr7656512pbc.41.1384535508069; Fri, 15 Nov 2013 09:11:48 -0800 (PST)
In-Reply-To: <20131115170625.GA11239@piedra>
References: <mailman.2646.1384514912.18130.python-list@python.org> <b6db8982-feac-4036-8ec4-2dc720d41a4b@googlegroups.com> <roy-66E351.09004515112013@news.panix.com> <BD21979F-E8CB-41EA-9136-6C052D65DEE0@panix.com> <52863305.2060303@chamonix.reportlab.co.uk> <CAPM-O+wS_+c7p6kN6Lz0A8_3gdqdZ_M6sJN1K5Hy_kbjpYCGvA@mail.gmail.com> <528637DB.6050504@chamonix.reportlab.co.uk> <CAPM-O+xo=81DfJe_zCUDoXBC3Nc9vX+1tPg+wSx6wO==vsC4hA@mail.gmail.com> <52863B2A.5080309@chamonix.reportlab.co.uk> <D3E0991C-2795-4282-AEC3-8C7E822D15E0@panix.com> <20131115170625.GA11239@piedra>
Date: Sat, 16 Nov 2013 04:11:47 +1100
Subject: Re: python 3.3 repr
From: Chris Angelico <rosuav@gmail.com>
To: python-list@python.org
Content-Type: text/plain; charset=ISO-8859-1
X-BeenThere: python-list@python.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe: <https://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive: <http://mail.python.org/pipermail/python-list/>
List-Post: <mailto:python-list@python.org>
List-Help: <mailto:python-list-request@python.org?subject=help>
List-Subscribe: <https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups: comp.lang.python
Message-ID: <mailman.2678.1384535511.18130.python-list@python.org>
Lines: 24
NNTP-Posting-Host: 2001:888:2000:d::a6
X-Trace: 1384535511 news.xs4all.nl 15941 [2001:888:2000:d::a6]:38841
X-Complaints-To: abuse@xs4all.nl
Xref: csiph.com comp.lang.python:59550

On Sat, Nov 16, 2013 at 4:06 AM, Zero Piraeus <z@etiol.net> wrote:
> :
>
> On Fri, Nov 15, 2013 at 10:32:54AM -0500, Roy Smith wrote:
>> Anybody remember RAD-50?  It let you represent a 6-character filename
>> (plus a 3-character extension) in a 16 bit word.  RT-11 used it, not
>> sure if it showed up anywhere else.
>
> Presumably 16 is a typo, but I just had a moderate amount of fun
> envisaging how that might work: if the characters were restricted to
> vowels, then 5**6 < 2**14, giving a couple of bits left over for a
> choice of four preset "three-character" extensions.
>
> I can't say that AEIOUA.EX1 looks particularly appealing, though ...

Looks like it might be this scheme:

https://en.wikipedia.org/wiki/DEC_Radix-50

36-bit word for a 6-char filename, but there was also a 16-bit
variant. I do like that filename scheme you describe, though it would
tend to produce names that would suit virulent diseases.

ChrisA