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Re: Unicode 7

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On Friday, May 2, 2014 5:25:37 PM UTC+5:30, Steven D'Aprano wrote:
> On Fri, 02 May 2014 03:39:34 -0700, Rustom Mody wrote:

> > On Friday, May 2, 2014 2:15:41 PM UTC+5:30, Steven D'Aprano wrote:
> >> On Thu, 01 May 2014 19:02:48 -0700, Rustom Mody wrote:
> >> > - Worst of all what we
> >> > *dont* see -- how many others dont see what we see?
> >> Again, this a deficiency of the font. There are very few code points in
> >> Unicode which are intended to be invisible, e.g. space, newline, zero-
> >> width joiner, control characters, etc., but they ought to be equally
> >> invisible to everyone. No printable character should ever be invisible
> >> in any decent font.
> > Thats not what I meant.
> > I wrote http://blog.languager.org/2014/04/unicoded-python.html
> >  – mostly on a debian box.
> > Later on seeing it on a less heavily setup ubuntu box, I see
> >  ⟮ ⟯ ⟬ ⟭ ⦇ ⦈ ⦉ ⦊
> > have become 'missing-glyph' boxes.
> > It leads me ask, how much else of what I am writing, some random reader
> > has simply not seen?
> > Quite simply we can never know – because most are going to go away
> > saying "mojibaked/garbled rubbish"
> > Speaking of what you understood of what I said: Yes invisible chars is
> > another problem I was recently bitten by. I pasted something from google
> > into emacs' org mode. Following that link again I kept getting a broken
> > link.
> > Until I found that the link had an invisible char
> > The problem was that emacs was faithfully rendering that char according
> > to standard, ie invisibly!

> And you've never been bitten by an invisible control character in ASCII 
> text? You've lived a sheltered life!

For control characters Ive seen:
- garbage (the ASCII equiv of mojibake)
- Straight ^A^B^C
- Maybe their names NUL,SOH,STX,ETX,EOT,ENQ,ACK…
- Or maybe just a little dot .
- More pathological behavior: a control sequence putting the
  terminal into some other mode

But I dont ever remember seeing a control character become
invisible (except [ \t\n\f])

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Unicode 7 wxjmfauth@gmail.com - 2014-04-29 10:37 -0700
  Re: Unicode 7 Tim Chase <python.list@tim.thechases.com> - 2014-04-29 12:59 -0500
    Re: Unicode 7 Rustom Mody <rustompmody@gmail.com> - 2014-04-29 21:53 -0700
      Re: Unicode 7 Steven D'Aprano <steve@pearwood.info> - 2014-05-01 05:00 +0000
        Re: Unicode 7 Rustom Mody <rustompmody@gmail.com> - 2014-05-01 11:04 -0700
          Re: Unicode 7 Terry Reedy <tjreedy@udel.edu> - 2014-05-01 18:38 -0400
            Re: Unicode 7 Rustom Mody <rustompmody@gmail.com> - 2014-05-01 19:29 -0700
              Re: Unicode 7 Rustom Mody <rustompmody@gmail.com> - 2014-05-01 19:39 -0700
              Re: Unicode 7 Chris Angelico <rosuav@gmail.com> - 2014-05-02 13:01 +1000
                Re: Unicode 7 Rustom Mody <rustompmody@gmail.com> - 2014-05-01 20:16 -0700
              Re: Unicode 7 Terry Reedy <tjreedy@udel.edu> - 2014-05-02 01:05 -0400
            Re: Unicode 7 Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-05-02 03:15 +0000
          Re: Unicode 7 MRAB <python@mrabarnett.plus.com> - 2014-05-02 00:33 +0100
            Re: Unicode 7 Rustom Mody <rustompmody@gmail.com> - 2014-05-01 19:02 -0700
              Re: Unicode 7 Ben Finney <ben@benfinney.id.au> - 2014-05-02 12:39 +1000
                Re: Unicode 7 Rustom Mody <rustompmody@gmail.com> - 2014-05-01 19:59 -0700
              Re: Unicode 7 Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-05-02 08:45 +0000
                Re: Unicode 7 Chris Angelico <rosuav@gmail.com> - 2014-05-02 19:08 +1000
                Re: Unicode 7 Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2014-05-02 13:04 +0300
                Re: Unicode 7 Rustom Mody <rustompmody@gmail.com> - 2014-05-02 03:39 -0700
                Re: Unicode 7 Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-05-02 11:55 +0000
                Re: Unicode 7 Marko Rauhamaa <marko@pacujo.net> - 2014-05-02 15:19 +0300
                Re: Unicode 7 Ben Finney <ben@benfinney.id.au> - 2014-05-03 07:07 +1000
                Re: Unicode 7 Roy Smith <roy@panix.com> - 2014-05-02 17:13 -0400
                Re: Unicode 7 Rustom Mody <rustompmody@gmail.com> - 2014-05-02 09:03 -0700
                Re: Unicode 7 Rustom Mody <rustompmody@gmail.com> - 2014-05-02 09:50 -0700
                Re: Unicode 7 Michael Torrie <torriem@gmail.com> - 2014-05-02 11:39 -0600
                Re: Unicode 7 Ned Batchelder <ned@nedbatchelder.com> - 2014-05-02 13:46 -0400
                Re: Unicode 7 Peter Otten <__peter__@web.de> - 2014-05-02 20:07 +0200
                Re: Unicode 7 Rustom Mody <rustompmody@gmail.com> - 2014-05-02 17:58 -0700
                Re: Unicode 7 Ned Batchelder <ned@nedbatchelder.com> - 2014-05-02 21:18 -0400
                Re: Unicode 7 Rustom Mody <rustompmody@gmail.com> - 2014-05-02 18:42 -0700
                Re: Unicode 7 Chris Angelico <rosuav@gmail.com> - 2014-05-03 11:54 +1000
                Re: Unicode 7 Rustom Mody <rustompmody@gmail.com> - 2014-05-02 19:02 -0700
                Re: Unicode 7 Chris Angelico <rosuav@gmail.com> - 2014-05-03 11:15 +1000
                Re: Unicode 7 Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-05-03 02:02 +0000
                Re: Unicode 7 Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-05-03 02:04 +0000
                Re: Unicode 7 Chris Angelico <rosuav@gmail.com> - 2014-05-03 12:17 +1000
                Re: Unicode 7 Terry Reedy <tjreedy@udel.edu> - 2014-05-02 22:19 -0400
                Re: Unicode 7 Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-05-03 12:57 -0400
                Re: Unicode 7 Tim Chase <python.list@tim.thechases.com> - 2014-05-02 07:58 -0500
              Re: Unicode 7 MRAB <python@mrabarnett.plus.com> - 2014-05-02 17:52 +0100
          Re: Unicode 7 Terry Reedy <tjreedy@udel.edu> - 2014-05-02 00:16 -0400
            Re: Unicode 7 Rustom Mody <rustompmody@gmail.com> - 2014-05-01 21:42 -0700
              Re: Unicode 7 Chris Angelico <rosuav@gmail.com> - 2014-05-02 14:54 +1000
              Re: Unicode 7 Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-05-02 08:08 +0000
                Re: Unicode 7 Chris Angelico <rosuav@gmail.com> - 2014-05-02 19:01 +1000
                Re: Unicode 7 Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-05-02 11:52 +0000
                Re: Unicode 7 Ben Finney <ben@benfinney.id.au> - 2014-05-02 19:16 +1000
                Re: Unicode 7 Marko Rauhamaa <marko@pacujo.net> - 2014-05-02 13:05 +0300
                Re: Unicode 7 Chris Angelico <rosuav@gmail.com> - 2014-05-02 19:24 +1000
                Re: Unicode 7 MRAB <python@mrabarnett.plus.com> - 2014-05-02 18:07 +0100
  Re: Unicode 7 MRAB <python@mrabarnett.plus.com> - 2014-04-29 19:12 +0100
    Re: Unicode 7 wxjmfauth@gmail.com - 2014-04-30 00:06 -0700
      Re: Unicode 7 Tim Chase <python.list@tim.thechases.com> - 2014-04-30 13:48 -0500
        Re: Unicode 7 wxjmfauth@gmail.com - 2014-04-30 23:00 -0700

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