On Apr 14, 2016, at 6:24 PM, Hans Hagen wrote:

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On 4/14/2016 3:47 PM, Brian R. Landy wrote: Hi, sometime between version 2015.08.05 and 2016.04.10 the handling of certain ligatures changed (sorry, I don't have intermediate versions to test with). The issue is the ligatures no longer copy/paste as the original two characters, which also breaks text searched of the pdf. Instead they copy as a single glyph.

I'm seeing the problem with "ti" and "fj", while others like "ffi", "fi", and "ff" are fine in both versions.

I see this using Calibri (other fonts I tried don't support those two ligatures):

\starttypescript[cleartype] \definetypeface[\typescriptone][ss][sans][calibri][default] \stoptypescript \usetypescript[cleartype] \setupbodyfont[cleartype,sans,10pt] \starttext ffi\par fi\par ff\par fi\par ti\par fj\par \stoptext

Thank you.

not all pdf viewers can do that well, unless it's broken, context outputs the tounicode vectors needed for it

Hans

But Acrobat works fine with the pdf generated by the older version of ConTeXt, which also uses the ligatures. So something must be different about the files generated by the two versions? I can post examples tomorrow if you'd like. Thanks, Brian

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On 4/15/2016 1:31 PM, Ulrike Fischer wrote:

Am Fri, 15 Apr 2016 00:24:26 +0200 schrieb Hans Hagen:

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On 4/14/2016 3:47 PM, Brian R. Landy wrote:

...

Hi, sometime between version 2015.08.05 and 2016.04.10 the handling of certain ligatures changed (sorry, I don't have intermediate versions to test with). The issue is the ligatures no longer copy/paste as the original two characters, which also breaks text searched of the pdf. Instead they copy as a single glyph.

I'm seeing the problem with "ti" and "fj", while others like "ffi", "fi", and "ff" are fine in both versions.

...

not all pdf viewers can do that well, unless it's broken, context outputs the tounicode vectors needed for it

I can't copy the two ligatures either (in Adobe Reader DC), but with the equivalent latex example (TL2016 pretest) it works fine. So imho it is not a viewer problem.

i looked into it and it's two things combined ... (1) when we explicitly pass tounicodes luatex mistakenly falls back to the index (a next release repairs this) (2) this happens here because calibri lacks the information (no names to deduce ligature from) .. so, i now have some extra heuristics in the font loader that get them from the gsub features Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------