Re: On language-dependent defaults for character-folding

[Richard Stallman]

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  > > * Equivalent letters (ö and ø in Swedish).

  > Not just letters -- sequences of characters.  For example, å vs aa in
  > Danish, or ffi vs ffi.

å and aa in Danish are equivalent, like ö and ø in Swedish.

Ligatures such as ffi are a different issue entirely.
The relationship between ffi vs ffi is language-independent
and similar to these two levels:

 * Different appearances of the same letter+decorations:
   as a single code point, or as a composition.
 
 * Identical-looking distinct code points (Latin a and Cyrillic a).

-- 
Dr Richard Stallman
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