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]
\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]

\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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