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Groups > comp.lang.python > #60790

Re: Python Unicode handling wins again -- mostly

From Roy Smith <roy@panix.com>
Newsgroups comp.lang.python
Subject Re: Python Unicode handling wins again -- mostly
Date 2013-11-29 21:08 -0500
Organization PANIX Public Access Internet and UNIX, NYC
Message-ID <roy-89763C.21084929112013@news.panix.com> (permalink)
References <529934dc$0$29993$c3e8da3$5496439d@news.astraweb.com>

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In article <529934dc$0$29993$c3e8da3$5496439d@news.astraweb.com>,
 Steven D'Aprano <steve+comp.lang.python@pearwood.info> wrote:

> (8) What's the uppercase of "baffle" spelled with an ffl ligature?
> 
> Like most other languages, Python 3.2 fails:
> 
> py> 'baffle'.upper()
> 'BAfflE'
> 
> but Python 3.3 passes:
> 
> py> 'baffle'.upper()
> 'BAFFLE'

I disagree.

The whole idea of ligatures like fi is purely typographic.  The crossbar 
on the "f" (at least in some fonts) runs into the dot on the "i".  
Likewise, the top curl on an "f" run into the serif on top of the "l" 
(and similarly for ffl).

There is no such thing as a "FFL" ligature, because the upper case 
letterforms don't run into each other like the lower case ones do.  
Thus, I would argue that it's wrong to say that calling upper() on an 
ffl ligature should yield FFL.

I would certainly expect, x.lower() == x.upper().lower(), to be True for 
all values of x over the set of valid unicode codepoints.  Having 
u"\uFB04".upper() ==> "FFL" breaks that.  I would also expect len(x) == 
len(x.upper()) to be True.

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Python Unicode handling wins again -- mostly Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-11-30 00:44 +0000
  Re: Python Unicode handling wins again -- mostly Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-11-30 01:07 +0000
  Re: Python Unicode handling wins again -- mostly Roy Smith <roy@panix.com> - 2013-11-29 21:08 -0500
    Re: Python Unicode handling wins again -- mostly Chris Angelico <rosuav@gmail.com> - 2013-11-30 13:12 +1100
      Re: Python Unicode handling wins again -- mostly Roy Smith <roy@panix.com> - 2013-11-29 21:28 -0500
        Re: Python Unicode handling wins again -- mostly Dave Angel <davea@davea.name> - 2013-11-29 22:06 -0500
    Re: Python Unicode handling wins again -- mostly Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-11-30 04:21 +0000
      Re: Python Unicode handling wins again -- mostly Roy Smith <roy@panix.com> - 2013-11-29 23:30 -0500
      Re: Python Unicode handling wins again -- mostly Zero Piraeus <z@etiol.net> - 2013-11-30 02:05 -0300
        Re: Python Unicode handling wins again -- mostly Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-11-30 06:25 +0000
      Re: Python Unicode handling wins again -- mostly Gene Heskett <gheskett@wdtv.com> - 2013-11-30 00:25 -0500
      Re: Python Unicode handling wins again -- mostly Roy Smith <roy@panix.com> - 2013-11-30 00:37 -0500
        Re: Python Unicode handling wins again -- mostly Ian Kelly <ian.g.kelly@gmail.com> - 2013-11-29 23:00 -0700
          Re: Python Unicode handling wins again -- mostly Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-11-30 07:11 +0000
        Re: Python Unicode handling wins again -- mostly Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-11-30 07:41 +0000
          Re: Python Unicode handling wins again -- mostly Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2013-12-01 11:41 +1300
    Re: Python Unicode handling wins again -- mostly Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-11-30 08:07 +0000
    Re: Python Unicode handling wins again -- mostly wxjmfauth@gmail.com - 2013-11-30 11:11 -0800
      Re: Python Unicode handling wins again -- mostly Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2013-12-01 11:37 +1300
        Re: Python Unicode handling wins again -- mostly Ned Batchelder <ned@nedbatchelder.com> - 2013-11-30 18:07 -0500
          Re: Python Unicode handling wins again -- mostly wxjmfauth@gmail.com - 2013-12-01 08:57 -0800
        Re: Python Unicode handling wins again -- mostly Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-12-01 00:22 +0000
          Re: Python Unicode handling wins again -- mostly Tim Chase <python.list@tim.thechases.com> - 2013-11-30 18:52 -0600
            Re: Python Unicode handling wins again -- mostly Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-12-01 00:54 +0000
              Re: Python Unicode handling wins again -- mostly Tim Chase <python.list@tim.thechases.com> - 2013-11-30 19:05 -0600
              Re: Python Unicode handling wins again -- mostly Chris Angelico <rosuav@gmail.com> - 2013-12-01 12:13 +1100
                Re: Python Unicode handling wins again -- mostly Roy Smith <roy@panix.com> - 2013-11-30 20:27 -0500
                Re: Python Unicode handling wins again -- mostly Chris Angelico <rosuav@gmail.com> - 2013-12-01 12:31 +1100
  Re: Python Unicode handling wins again -- mostly Serhiy Storchaka <storchaka@gmail.com> - 2013-12-01 20:00 +0200
    Re: Python Unicode handling wins again -- mostly wxjmfauth@gmail.com - 2013-12-01 12:15 -0800
      Re: Python Unicode handling wins again -- mostly Tim Delaney <timothy.c.delaney@gmail.com> - 2013-12-02 07:54 +1100
        Re: Python Unicode handling wins again -- mostly wxjmfauth@gmail.com - 2013-12-02 04:39 -0800
          Re: Python Unicode handling wins again -- mostly Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-02 14:46 +0000
          Re: Python Unicode handling wins again -- mostly Ned Batchelder <ned@nedbatchelder.com> - 2013-12-02 10:22 -0500
          Re: Python Unicode handling wins again -- mostly Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-02 15:45 +0000
          Re: Python Unicode handling wins again -- mostly Chris Angelico <rosuav@gmail.com> - 2013-12-03 02:49 +1100
          Re: Python Unicode handling wins again -- mostly Ned Batchelder <ned@nedbatchelder.com> - 2013-12-02 10:58 -0500
          Re: Python Unicode handling wins again -- mostly Terry Reedy <tjreedy@udel.edu> - 2013-12-02 15:26 -0500
          Re: Python Unicode handling wins again -- mostly Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-02 20:45 +0000
          Re: Python Unicode handling wins again -- mostly Ned Batchelder <ned@nedbatchelder.com> - 2013-12-02 16:44 -0500
          Code of Conduct, Trolls, and Thankless Jobs  [was Re: Python Unicode handling wins again -- mostly] Ethan Furman <ethan@stoneleaf.us> - 2013-12-02 13:25 -0800
          Re: Code of Conduct, Trolls, and Thankless Jobs  [was Re: Python Unicode handling wins again -- mostly] Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-02 22:04 +0000
            Re: Code of Conduct, Trolls, and Thankless Jobs  [was Re: Python Unicode handling wins again -- mostly] Roy Smith <roy@panix.com> - 2013-12-02 20:38 -0500
              Pythonista Goals  [was Re: Code of Conduct, Trolls, and Thankless Jobs] Ethan Furman <ethan@stoneleaf.us> - 2013-12-02 17:56 -0800
              Re: Code of Conduct, Trolls, and Thankless Jobs  [was Re: Python Unicode handling wins again -- mostly] Grant Edwards <invalid@invalid.invalid> - 2013-12-03 04:32 +0000
                Re: Code of Conduct, Trolls, and Thankless Jobs  [was Re: Python Unicode handling wins again -- mostly] Steven D'Aprano <steve@pearwood.info> - 2013-12-03 05:41 +0000
                Re: Code of Conduct, Trolls, and Thankless Jobs  [was Re: Python Unicode handling wins again -- mostly] Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-03 12:14 +0000
              Re: Code of Conduct, Trolls, and Thankless Jobs [was Re: Python Unicode handling wins again -- mostly] Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-03 12:11 +0000
          Re: Code of Conduct, Trolls, and Thankless Jobs  [was Re: Python Unicode handling wins again -- mostly] Ned Batchelder <ned@nedbatchelder.com> - 2013-12-02 17:23 -0500
          Re: Python Unicode handling wins again -- mostly Ned Batchelder <ned@nedbatchelder.com> - 2013-12-02 17:24 -0500
          Re: Python Unicode handling wins again -- mostly Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-02 22:32 +0000
          Re: Python Unicode handling wins again -- mostly Ned Batchelder <ned@nedbatchelder.com> - 2013-12-02 17:53 -0500
          Re: Code of Conduct, Trolls, and Thankless Jobs Ben Finney <ben+python@benfinney.id.au> - 2013-12-03 10:11 +1100
          Re: Python Unicode handling wins again -- mostly Ethan Furman <ethan@stoneleaf.us> - 2013-12-02 14:41 -0800
          Re: Code of Conduct, Trolls, and Thankless Jobs  [was Re: Python Unicode handling wins again -- mostly] Terry Reedy <tjreedy@udel.edu> - 2013-12-02 22:22 -0500
          Re: Code of Conduct, Trolls, and Thankless Jobs Terry Reedy <tjreedy@udel.edu> - 2013-12-02 22:39 -0500
          Re: Code of Conduct, Trolls, and Thankless Jobs  [was Re: Python Unicode handling wins again -- mostly] Ethan Furman <ethan@stoneleaf.us> - 2013-12-02 20:11 -0800
      Re: Python Unicode handling wins again -- mostly Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-01 22:06 +0000
      Re: Python Unicode handling wins again -- mostly Tim Delaney <timothy.c.delaney@gmail.com> - 2013-12-02 09:29 +1100
      Re: Python Unicode handling wins again -- mostly Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-01 23:10 +0000
      Re: Python Unicode handling wins again -- mostly Ethan Furman <ethan@stoneleaf.us> - 2013-12-01 14:50 -0800
      Re: Python Unicode handling wins again -- mostly Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-02 00:43 +0000
  Re: Python Unicode handling wins again -- mostly Ethan Furman <ethan@stoneleaf.us> - 2013-12-02 12:38 -0800
  Re: Python Unicode handling wins again -- mostly Ned Batchelder <ned@nedbatchelder.com> - 2013-12-02 16:14 -0500
    Re: Python Unicode handling wins again -- mostly Steven D'Aprano <steve@pearwood.info> - 2013-12-03 05:06 +0000
      Re: Python Unicode handling wins again -- mostly joe <joeedh@gmail.com> - 2013-12-02 23:35 -0800
      Re: Python Unicode handling wins again -- mostly wxjmfauth@gmail.com - 2013-12-03 10:34 -0800
  Re: Python Unicode handling wins again -- mostly Chris Angelico <rosuav@gmail.com> - 2013-12-03 08:23 +1100
  Re: Python Unicode handling wins again -- mostly MRAB <python@mrabarnett.plus.com> - 2013-12-02 21:27 +0000
  Re: Python Unicode handling wins again -- mostly Ethan Furman <ethan@stoneleaf.us> - 2013-12-02 13:27 -0800
  Re: Python Unicode handling wins again -- mostly Ben Finney <ben+python@benfinney.id.au> - 2013-12-03 09:56 +1100
  Re: Python Unicode handling wins again -- mostly Neil Cerutti <neilc@norwich.edu> - 2013-12-03 13:47 +0000
  Re: Python Unicode handling wins again -- mostly Ethan Furman <ethan@stoneleaf.us> - 2013-12-03 06:26 -0800
    Re: Python Unicode handling wins again -- mostly wxjmfauth@gmail.com - 2013-12-04 05:52 -0800
      Re: Python Unicode handling wins again -- mostly Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-04 14:07 +0000
      Re: Python Unicode handling wins again -- mostly Neil Cerutti <neilc@norwich.edu> - 2013-12-04 14:38 +0000

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