Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.lang.python > #67433

Re: why indentation should be part of the syntax

Path csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!xlned.com!feeder5.xlned.com!newsfeed.xs4all.nl!newsfeed1a.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path <python-python-list@m.gmane.org>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.016
X-Spam-Evidence '*H*': 0.97; '*S*': 0.00; 'languages,': 0.04; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'bug': 0.12; 'braces?': 0.16; 'bug,': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'syntax,': 0.16; 'wrote:': 0.18; 'all,': 0.19; 'stefan': 0.19; 'meant': 0.20; 'programming': 0.22; 'header:User-Agent:1': 0.23; 'merge': 0.24; 'received:comcast.net': 0.24; 'url:02': 0.24; "haven't": 0.24; 'looks': 0.24; 'mention': 0.26; 'this:': 0.26; 'header:X -Complaints-To:1': 0.27; 'header:In-Reply-To:1': 0.27; 'am,': 0.29; 'wonder': 0.29; "i'm": 0.30; 'code': 0.31; 'accidentally': 0.31; 'indentation': 0.31; 'handled': 0.32; 'quite': 0.32; 'subject:the': 0.34; 'but': 0.35; 'url:org': 0.36; 'two': 0.37; 'list': 0.37; 'being': 0.38; 'skip:& 10': 0.38; 'apple': 0.38; 'to:addr:python-list': 0.38; 'recent': 0.39; 'sure': 0.39; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'even': 0.60; 'read': 0.60; 'details.': 0.61; 'such': 0.63; 'due': 0.66; 'obvious': 0.74; 'article': 0.77; 'goto': 0.84; 'url:2014': 0.84; 'poorly': 0.93
X-Injected-Via-Gmane http://gmane.org/
To python-list@python.org
From Ned Batchelder <ned@nedbatchelder.com>
Subject Re: why indentation should be part of the syntax
Date Sun, 02 Mar 2014 07:36:31 -0500
References <lev1t8$qt0$1@ger.gmane.org>
Mime-Version 1.0
Content-Type text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding 7bit
X-Gmane-NNTP-Posting-Host c-50-133-228-126.hsd1.ma.comcast.net
User-Agent Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:24.0) Gecko/20100101 Thunderbird/24.3.0
In-Reply-To <lev1t8$qt0$1@ger.gmane.org>
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.7573.1393763808.18130.python-list@python.org> (permalink)
Lines 27
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1393763808 news.xs4all.nl 2852 [2001:888:2000:d::a6]:45850
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:67433

Show key headers only | View raw


On 3/2/14 5:41 AM, Stefan Behnel wrote:
> Haven't seen any mention of it on this list yet, but since it's such an
> obvious flaw in quite a number of programming languages, here's a good
> article on the recent security bug in iOS, which was due to accidentally
> duplicated code not actually being as indented as it looked:
>
> https://www.imperialviolet.org/2014/02/22/applebug.html
>
> Stefan
>

As much as I like indentation as syntax, and am amused by this bug, I'm 
not sure we can chalk it all up to space-vs-brace. After all, who would 
have wanted two goto's in a row even with braces?  It's not like there's 
some engineer at Apple who meant for the code to read like this:

     if ((err = SSLHashSHA1.update(&hashCtx, &signedParams)) != 0) {
         goto fail;
         goto fail;
     }

This looks to me like a poorly handled merge conflict maybe?  I wonder 
if we'll ever get the details.

-- 
Ned Batchelder, http://nedbatchelder.com

Back to comp.lang.python | Previous | Next | Find similar | Unroll thread


Thread

Re: why indentation should be part of the syntax Ned Batchelder <ned@nedbatchelder.com> - 2014-03-02 07:36 -0500

csiph-web