Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!aioe.org!feeder.news-service.com!news2.euro.net!newsfeed.xs4all.nl!newsfeed6.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 0.018
X-Spam-Evidence: '*H*': 0.96; '*S*': 0.00; 'languages,': 0.03; 'python': 0.08; 'derived': 0.09; 'foo': 0.09; 'am,': 0.12; 'from:addr:rosuav': 0.16; 'from:name:chris angelico': 0.16; 'newlines': 0.16; 'whitespace.': 0.16; 'wrote:': 0.16; 'header:In- Reply-To:1': 0.22; 'differ': 0.23; 'indentation': 0.23; 'aug': 0.24; 'originally': 0.24; 'handles': 0.25; "wasn't": 0.28; 'message-id:@mail.gmail.com': 0.29; 'differently': 0.30; 'rarely': 0.30; 'whitespace': 0.30; 'source': 0.33; 'to:addr:python-list': 0.33; 'received:209.85.161': 0.35; 'fri,': 0.36; 'skip:" 10': 0.36; 'languages': 0.37; 'but': 0.37; 'steven': 0.38; 'too,': 0.38; 'received:google.com': 0.38; 'received:209.85': 0.38; 'subject:: ': 0.39; 'to:addr:python.org': 0.39; "it's": 0.40; 'course.': 0.63; 'subject:line': 0.73; 'different.': 0.84; 'same:': 0.84; 'significant.': 0.84
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; bh=fzMMpBhIXDFWk5TyUNplwLD6Tmhl+l70KREKS0Nok+M=; b=FTHZBXsn/NyK4RCwuR+UtChMPeyBQJHvozs/EW695uUGu8YQJ9pdUNVlrF4BNvatBC ehaWRsKtqLfxvOTW9NkOQX2bg018TGqYRqJ59xbmkJQV1Bx9GRZPqA1h0/T5ndUPcuXU ArfHLki4ukNyXHASzdhm7vNkB8so2AXq54PG8=
MIME-Version: 1.0
In-Reply-To: <4e448471$0$29980$c3e8da3$5496439d@news.astraweb.com>
References: <1312951356.77394.YahooMailNeo@web121518.mail.ne1.yahoo.com> <CAMZYqRRh-kSoSjywrQH=jkeysPRwms6O376dPOyTqkZtdgG_jQ@mail.gmail.com> <mailman.2085.1312956463.1164.python-list@python.org> <4e424208$0$29965$c3e8da3$5496439d@news.astraweb.com> <pan.2011.08.10.09.56.19@tombstonezero.net> <mailman.2096.1312971973.1164.python-list@python.org> <Xns9F3D8883BD21Aduncanbooth@127.0.0.1> <1312981104.89312.YahooMailNeo@web121520.mail.ne1.yahoo.com> <1312982377.95657.YahooMailNeo@web121508.mail.ne1.yahoo.com> <mailman.2119.1312991808.1164.python-list@python.org> <slrnj45e7s.14vk.usenet-nospam@guild.seebs.net> <87fwl9hr4r.fsf@benfinney.id.au> <slrnj46o4a.1rv9.usenet-nospam@guild.seebs.net> <87obzwh4o0.fsf@benfinney.id.au> <slrnj48hjg.b8.usenet-nospam@guild.seebs.net> <mailman.2196.1313107113.1164.python-list@python.org> <4e448471$0$29980$c3e8da3$5496439d@news.astraweb.com>
Date: Fri, 12 Aug 2011 08:09:03 +0100
Subject: Re: allow line break at operators
From: Chris Angelico <rosuav@gmail.com>
To: python-list@python.org
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
X-BeenThere: python-list@python.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe: <http://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: <http://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups: comp.lang.python
Message-ID: <mailman.2204.1313132946.1164.python-list@python.org>
Lines: 35
NNTP-Posting-Host: 2001:888:2000:d::a6
X-Trace: 1313132946 news.xs4all.nl 23925 [2001:888:2000:d::a6]:50113
X-Complaints-To: abuse@xs4all.nl
Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:11254

On Fri, Aug 12, 2011 at 2:40 AM, Steven D'Aprano
<steve+comp.lang.python@pearwood.info> wrote:
> Please be careful about conflating significant indentation with significa=
nt
> whitespace. Many languages have significant whitespace:
>
> foo bar
>
> is rarely the same thing as
>
> foobar
>
> but is the same as
>
> foo =A0 =A0 =A0 =A0 =A0 bar
>
> Python is no different.
>

Of course. But most languages derived from C have a single lexer token
"whitespace". That one token is significant, but these are all the
same:

foo bar
foo               bar
foo
bar
foo/* this one wasn't originally the same*/bar

Python handles differently source files that differ only in
whitespace. It's not only indentation; newlines are whitespace too,
and they're significant. In C-derived languages, it's only
presence-or-absence.

ChrisA