Re: Joined "ti" coded as "Ɵ" in PDF

Yes, it seems like your mileage varies with the PDF viewer/interpreter/converter. Text copied from Preview on the Mac replaces the ti ligature with a space. Certainly not a Unicode problem, per se, but an interesting problem nevertheless.

-steve

> On Mar 17, 2016, at 11:11 AM, Doug Ewell <doug_at_ewellic.org> wrote:
>
> Don Osborn wrote:
>
>> Odd result when copy/pasting text from a PDF: For some reason "ti" in
>> the (English) text of the document at
>> http://web.isanet.org/Web/Conferences/Atlanta%202016/Atlanta%202016%20-%20Full%20Program.pdf
>> is coded as "Ɵ". Looking more closely at the original text, it does
>> appear that the glyph is a "ti" ligature (which afaik is not coded as
>> such in Unicode).
>
> When I copy and paste the PDF text in question into BabelPad, I get:
>
>> Interna􀆟onal Order and the Distribu􀆟on of Iden􀆟ty in 1950 (By
>> invita􀆟on only)
>
> The "ti" ligatures are implemented as U+10019F, a Plane 16 private-use
> character.
>
> Truncating this character to 16 bits, which is a Bad Thing™, yields
> U+019F LATIN CAPITAL LETTER O WITH MIDDLE TILDE. So it looks like either
> Don's clipboard or the editor he pasted it into is not fully
> Unicode-compliant.
>
> Don's point about using alternative characters to implement ligatures,
> thereby messing up web searches, remains valid.
>
> --
> Doug Ewell | http://ewellic.org | Thornton, CO 🇺🇸
>
>
Received on Thu Mar 17 2016 - 13:20:22 CDT