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Are you using Acrobat on Macintosh or Windows? I visited the Adobe site and there is a lot of discussion about Unicode character recognition, support and suggestions via their Adobe Acrobat Forums for both PC & MAC platforms that may be useful.
Automatic Accent Insertion (AAI) is the problem of re-inserting accents
(diacritics) into a text where they are missing. Unaccented French texts
are still quite common in electronic media, as a result of a long history of
character encoding problems and the lack of well-established conventions for typing accented characters on computer keyboards.
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