Re: Can watermarking Unicode text using invisible differences sneak through Emacs, or can Emacs detect it?

[Richard Stallman]

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  > > C-x 8 RET recognizes
  > > LATIN SMALL LETTER A WITH BREVE AND TILDE
  > > but it does not recognize
  > > LATIN SMALL LETTER A WITH TILDE AND BREVE
  > >
  > > Is the failure to handle the latter a bug?

  > Not necessarily. Unicode does not assign single-character codes to all
  > possible letter and diacritic combinations. Instead, it has various
  > combining diacritics that apply to the nearest preceding non-combining
  > character.

I suspect we are miscommunicating.

I am not talking about compositions using combining diacritics.  I'm
talking about individual Unicode code points that can appear, as such,
in a file.  Such as the code point #x1eb5, which is the character
`ẵ'.

I think Emacs already handles composition, and perhaps does that well
enough.  (I can't tell, because my Linux console does not display
compositions.)

-- 
Dr Richard Stallman (https://stallman.org)
Chief GNUisance of the GNU Project (https://gnu.org)
Founder, Free Software Foundation (https://fsf.org)
Internet Hall-of-Famer (https://internethalloffame.org)