Re: [NTG-context] copy&paste from pdf bug (smallcaps, text figures)

[Hans Hagen]

On 8/2/2013 2:28 PM, Philipp Gesang wrote:

···<date: 2013-08-02, Friday>···<from: Marco Patzer>···

On 2013–08–02 Philipp Gesang wrote:

     https://phi-gamma.net/pdf/copypasta.pdf
     https://phi-gamma.net/files/copypasta.txt

I definitely get   from this
one.

Indeed. When I copy from your file I get those private Unicode
slots. When I run the example code from your OP, I get the correct
characters. I don't know what's the difference between those two
files.

The PDF is what Context produces here with that code.

        The LuaTeX version and ConTeXt version is the same.

Creator:        ConTeXt - 2013.08.01 01:31
Producer:       LuaTeX-0.76.0

There appears to be a difference between node and base mode
depending on how the font is defined:

   \pdfcompresslevel0

   \setupbodyfont [iwona]

   \definefontfeature [proto]    [onum=yes,smcp=yes,script=dflt,lang=dflt]
   \definefontfeature [withbase] [proto] [mode=base]
   \definefontfeature [withnode] [proto] [mode=node]

   \definefont [iwonab] [file:Iwona-Regular.otf*withbase]
   \definefont [iwonan] [file:Iwona-Regular.otf*withnode]

   \starttext
     \feature[<]
     base mode\par
     {\feature[!][withbase]0123456789abcdefghijklmnopqrstuvwxyz\par}
     {\iwonab 0123456789abcdefghijklmnopqrstuvwxyz}

     node mode\par
     {\feature[!][withnode]0123456789abcdefghijklmnopqrstuvwxyz\par}
     {\iwonan 0123456789abcdefghijklmnopqrstuvwxyz}
   \stoptext \endinput

This gets me (through pdftotext):

   base mode
   
   0123456789abcdefghijklmnopqrstuvwxyz
   node mode
   
   

So base mode with \definefont works while node mode or the font
from the typescript doesn’t.

For such tests you need to compare all cases:

nopdfcompression

\setupbodyfont [iwona]

\definefontfeature [withbaseone] [proto] [mode=base]
\definefontfeature [withnodeone] [proto] [mode=node]


\definefont [iwonabone] [file:Iwona-Regular.otf*withbaseone]
\definefont [iwonanone] [file:Iwona-Regular.otf*withnodeone]

\definefont [iwonabtwo] [file:Iwona-Regular.otf*withbasetwo]
\definefont [iwonantwo] [file:Iwona-Regular.otf*withnodetwo]

\starttext

test 1, both modes:

{\iwonanone 0123456789abcdefghijklmnopqrstuvwxyz}\par
{\iwonabone 0123456789abcdefghijklmnopqrstuvwxyz}\par
{\iwonantwo 0123456789abcdefghijklmnopqrstuvwxyz}\par
{\iwonabtwo 0123456789abcdefghijklmnopqrstuvwxyz}\par

% test 2, base only:

% {\iwonabone 0123456789abcdefghijklmnopqrstuvwxyz}\par
% {\iwonabtwo 0123456789abcdefghijklmnopqrstuvwxyz}\par

% test 3, node only:

% {\iwonanone 0123456789abcdefghijklmnopqrstuvwxyz}\par
% {\iwonantwo 0123456789abcdefghijklmnopqrstuvwxyz}\par

\stoptext

i.e. get rid of potential interferences

attached is what i get


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\definefontfeature [withbasetwo] [proto] [mode=base,onum=yes,smcp=yes,script=dflt,lang=dflt] \definefontfeature [withnodetwo] [proto] [mode=node,onum=yes,smcp=yes,script=dflt,lang=dflt]

oeps.pdf
Description: Adobe PDF document

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