[MPEG-OTSPEC] Many to many substitution and localization

[William_J_G Overington]

Simon Cozens wrote as follows.
 
>  Suppose a many-to-many substitution is implemented with the 
> lookupflag of "IgnoreMarks", and suppose also that there are 
> marks in the input glyph sequence. It's not possible to determine how 
> those marks should be distributed amongst the new set of glyphs 
> produced by the substitution.
 
Thank you for replying.
 
I only know a little about OpenType, and I do not know what is meant by 
the marks to which reference is made.
  
However, the input sequence is characters, not glyphs, in the same way 
that the input sequence is characters in a liga table substitution rule.
 
I am thinking of the input sequence perhaps being in an email that has 
been received, though that is just one example of the possible 
applications of the idea.
 
Here is a link to a PDF slide show that I produced some time ago.
 
http://www.users.globalnet.co.uk/~ngo/slide_show_about_localizable_sentences.pdf 
<http://www.users.globalnet.co.uk/~ngo/slide_show_about_localizable_sentences.pdf>
 
William Overington
 
Thursday 26 September 2024
 
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