Code charts and code points (was: Re: fonts for U7.0 scripts)

2014-10-24 Thread Martin J. Dürst

On 2014/10/24 10:21, Asmus Freytag wrote:

Peter is correct.

The only fonts that should be released to the public are those that are
Unicode encoded and have the correct shaping tables.

Unlike the public, the code chart editors for Unicode have tools that
can correctly handle not only ASCII-hacked fonts as well as PUA-assigned
fonts, but also fonts that use the wrong Unicode encoding (because
they were designed for an earlier draft with different code point
assignments). These tools ignore all shaping tables, so the lack of such
tables isn't an issue.

The documents created by the code charts editors are no editable in the
normal sense, so they can be published without causing problems, like
establishing a de-facto encoding. They don't contain running text in
these fonts, so there isn't an issue with search - the searchable
contents are all character names, annotations etc in Latin letters and
digits.

Releasing such fonts to the public would establish a de-facto
non-sanctioned encoding, because people could create (and interchange)
running text using them.


Hello Asmus,

The code charts are published as PDFs. In general, text in PDFs can be 
copypasted elsewhere. Is there something in place that makes sure that 
wrong Unicode encodings for glyphs published in code charts don't leak 
elsewhere?


Regards,   Martin.
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Re: Code charts and code points (was: Re: fonts for U7.0 scripts)

2014-10-24 Thread Shriramana Sharma
Hi Martin. If you haven't noticed it before, opening Unicode charts in
PDF readers has something like SECURED on the top i.o.w. the charts
are sorta DRM-protected. So you can't copy-paste the characters. Heck
you can't even copy-paste the character *names*!

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Shriramana Sharma ஶ்ரீரமணஶர்மா श्रीरमणशर्मा

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Re: Code charts and code points (was: Re: fonts for U7.0 scripts)

2014-10-24 Thread Andrew West
On 24 October 2014 13:05, Shriramana Sharma samj...@gmail.com wrote:
 Hi Martin. If you haven't noticed it before, opening Unicode charts in
 PDF readers has something like SECURED on the top i.o.w. the charts
 are sorta DRM-protected. So you can't copy-paste the characters. Heck
 you can't even copy-paste the character *names*!

You can copy just fine with the Foxit PDF reader.  Like Jukka, I tried
randomly copying a number of PDF code charts (from
http://www.unicode.org/charts/) and I couldn't find any which were not
using the correct Unicode code points (maybe there are some, but I
gave up before I found them).

Andrew
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Re: Code charts and code points (was: Re: fonts for U7.0 scripts)

2014-10-24 Thread Shriramana Sharma
Looks like I spoke too soon -- I seem to distinctly remember this
behaviour from earlier versions (or am I misremembering?!!!) but
Unicode 7.0 charts don't seem to be this way... And SMP glyphs seem to
be mapped to PUA chars. Not really ideal...

BTW for older versions, individual blockwise charts don't seem to be
available. I would presume the total size of individual blockwise
charts isn't too much higher than the single
http://www.unicode.org/Public/6.2.0/charts/ and Unicode versions
aren't that too many anyway -- can we have individual block charts in
archival rather than having to download 92 MB please? (In Asia the
broadband speeds aren't all that fast...)


-- 
Shriramana Sharma ஶ்ரீரமணஶர்மா श्रीरमणशर्मा

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