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Groups > comp.sys.acorn.misc > #6583

Re: Local browsing

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In message <na.e8974852cd.a806e0tennant@orpheusmail.co.uk>
 on 11 Sep 2012 Tennant Stuart  wrote:

> In article <17p*Z04eu@news.chiark.greenend.org.uk>,
> Theo Markettos <theom+news@chiark.greenend.org.uk> wrote:
> 
> > I suspect not. &EF,&BF,&BD is the UTF-8 representation of U+FFFD
> > REPLACEMENT CHARACTER used to replace an incoming character whose value
> > is unknown or unrepresentable in Unicode
> 
> > So looks like something has replaced a character with that Unicode code
> > point, and then that's got escaped into %-entities.
> 
> Thanks Theo, I think you've found the bug in Netsurf. Yes, the directory
> name begins with a bullet (for very good reasons) which is ASCII 143.
> 
> This means that ADFS::HardDisc5/$/WEBZ/JRWEB/lynx/index.htm should be
> read as file:///ADFS::HardDisc5/$/WEBZ/%8FJRWEB/lynx/index.htm etc.
> 
> However, Netsurf inappropriately converts the bullet to a Unicode error
> value even though the character itself is not displayed, so cannot fetch
> the file. I'm guessing this bug applies to many different characters.

I should think it will only apply to characters in the range 128 to 159,
which are undefined in ISO Latin 1 but which were used by Acorn for various
things like the bullet, directional quotation marks, etc.  Having these
characters in filenames is asking for trouble, to be honest.  They are likely
to cause problems with file access when transferring to or from a non-Acorn
system, e.g. via Samba, NFS, FTP or as an e-mail attachment.  They could
easily cause trouble if you transfer the file to a non-Filecore format drive
too.

It's true that NetSurf could be made to handle these better, by using
different mapping tables to convert them to UTF-8 representation, but I
should think this will be a low priority for the developers.

-- 
Matthew Phillips
Durham

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Local browsing Tennant Stuart <tennant@orpheus.co.uk> - 2012-09-03 18:01 +0100
  Re: Local browsing Graham Pickles <graham@durain.demon.co.uk> - 2012-09-03 18:50 +0100
    Re: Local browsing John Rickman Iyonix <rickman@argonet.co.uk> - 2012-09-03 20:18 +0100
    Re: Local browsing Tennant Stuart <tennant@orpheus.co.uk> - 2012-09-04 18:01 +0100
      Re: Local browsing Chris Johnson <chrisjohnson+news@spamcop.net> - 2012-09-04 20:25 +0100
        Re: Local browsing Dave Symes <dave@triffid.co.uk> - 2012-09-04 22:00 +0100
          Re: Local browsing Dave Symes <dave@triffid.co.uk> - 2012-09-04 22:09 +0100
            Re: Local browsing Tennant Stuart <tennant@orpheus.co.uk> - 2012-09-05 18:08 +0100
              Re: Local browsing "Felicity S." <Flcty@rdsqurrl.com> - 2012-09-10 18:52 +0100
                Re: Local browsing Theo Markettos <theom+news@chiark.greenend.org.uk> - 2012-09-10 19:43 +0100
                Re: Local browsing Tennant Stuart <tennant@orpheus.co.uk> - 2012-09-11 18:01 +0100
                Re: Local browsing Tennant Stuart <tennant@orpheus.co.uk> - 2012-09-17 18:02 +0100
                Re: Local browsing "Felicity S." <Flcty@rdsqurrl.com> - 2012-09-18 00:15 +0100
                Re: Local browsing Tennant Stuart <tennant@orpheus.co.uk> - 2012-09-18 18:02 +0100
                Re: Local browsing Matthew Phillips <spam2011m@yahoo.co.uk> - 2012-09-18 07:28 +0100
                Re: Local browsing Tennant Stuart <tennant@orpheus.co.uk> - 2012-09-19 18:00 +0100
                Re: Local browsing Russell Hafter News <see.sig@walkingingermany.invalid> - 2012-09-19 21:06 +0100
                Re: Local browsing Theo Markettos <theom+news@chiark.greenend.org.uk> - 2012-09-20 13:40 +0100
                Re: Local browsing Matthew Phillips <spam2011m@yahoo.co.uk> - 2012-09-21 07:17 +0100
                Re: Local browsing Tennant Stuart <tennant@orpheus.co.uk> - 2012-09-22 18:01 +0100
                Re: Local browsing Matthew Phillips <spam2011m@yahoo.co.uk> - 2012-09-24 07:46 +0100
                Re: Local browsing Matthew Phillips <spam2011m@yahoo.co.uk> - 2012-09-21 07:42 +0100
                Re: Local browsing Matthew Phillips <spam2011m@yahoo.co.uk> - 2012-09-21 07:45 +0100
                Re: Local browsing Tennant Stuart <tennant@orpheus.co.uk> - 2012-09-22 18:00 +0100
                Re: Local browsing Matthew Phillips <spam2011m@yahoo.co.uk> - 2012-09-24 07:38 +0100
                Re: Local browsing Tennant Stuart <tennant@orpheus.co.uk> - 2012-09-25 18:01 +0100
                Re: Local browsing Matthew Phillips <spam2011m@yahoo.co.uk> - 2012-09-25 23:04 +0100
                Re: Local browsing Theo Markettos <theom+news@chiark.greenend.org.uk> - 2012-09-26 01:58 +0100
                Re: Local browsing "Felicity S." <Flcty@rdsqurrl.com> - 2012-09-27 00:26 +0100
                Re: Local browsing Tennant Stuart <tennant@orpheus.co.uk> - 2012-10-01 18:03 +0100
                Help Please - RiscPC won't boot Boblith News Sender <bob@boblith44.plus.com> - 2012-10-02 18:10 +0200
                Re: Help Please - RiscPC won't boot Jim Nagel <jimnewsm10d@abbeypress.co.uk> - 2012-10-02 18:33 +0100
                Re: Help Please - RiscPC won't boot Chris Newman <cvjazz@waitrose.com> - 2012-10-02 19:39 +0100
                Re: Help Please - RiscPC won't boot "Bob's News account" <bob@boblith44.plus.com> - 2012-10-06 03:22 +0000
                Re: Help Please - RiscPC won't boot Chris Newman <cvjazz@waitrose.com> - 2012-10-06 16:37 +0100
                Re: Help Please - RiscPC won't boot "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-10-02 23:25 +0100

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