Re: Joined "ti" coded as "Ɵ" in PDF

Pierpaolo Bernardi olopierpa at
Thu Mar 17 13:02:19 CDT 2016

On Thu, Mar 17, 2016 at 6:37 PM, Leonardo Boiko <leoboiko at> wrote:
> The PDF *displays* correctly.  But try copying the string 'ti' from
> the text another application outside of your PDF viewer, and you'll
> see that the thing that *displays* as 'ti' is *coded* as Ɵ, as Don
> Osborn said.

Ah. OK.  Anyway this is not a Unicode problem. PDF knows nothing about
unicode. It uses the encoding of the fonts used.

The ti ligature is a glyph in the font used in that document.  Its
code has nothing to do with anything unicode.  It looks like a
pre-unicode hack because unicode says nothing about font technologies,
and hence nothing has changed in PDF because of unicode (nor could
have, unicode does not mandate how to encode ligatures).

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