Font problem with TL'20

[Paulo Ney de Souza]

Many thanks, and I have one last question:

    Do you know a way one can automatically check a PDF file for this kind
of overprinting?

This one was caught by an operator at the start of a 5 thousand run...
because it worked fine for some 20 years and no one even checked it before
sending it to the big press.

Paulo Ney

On Wed, Dec 9, 2020 at 11:48 PM David Carlisle <d.p.carlisle at gmail.com>
wrote:

>
>
> On Thu, 10 Dec 2020 at 03:29, Paulo Ney de Souza <pauloney at gmail.com>
> wrote:
>
>> Awesome, thanks! David. That does solve the problem.
>>
>> Is it possible/feasible to trace what other packages are in the same
>> situation?
>>
>
> yes I'll look, in  fact any packages using problematic \fontseries or
> \DeclareFontShape were flagged with the package maintainers months before
> the release (and I think by now most got changed) I think this slipped
> through as it is using \usefont which we may have not searched for.
>
> there are three instances in my texlive tree
>
> $ pwd
>
> /usr/local/texlive/2020/texmf-dist/tex
>
> $ grep -r '\\usefont.*{m.}'
>
> latex/ean13isbn/ean13isbn.sty:  \def\zw at isbnfont
> {\usefont{OT1}{phv}{mc}{n}\fontsize{\zw at isbnfsize}{\zw at isbnfsize
> }\selectfont}}
>
> latex/recipecard/recipecard.cls:    \noindent\fontsize{14.4}{17}
> \usefont{T1}{pzc}{mb}{it}%
>
> latex/songs/songs.sty:  \usefont{OT1}{pzc}{mb}{it}%
>
>
> we will check if the other two cases are problematic.
>
>
>
>
> David
>
>
>> Paulo Ney
>>
>> On Wed, Dec 9, 2020 at 2:11 PM David Carlisle <d.p.carlisle at gmail.com>
>> wrote:
>>
>>>
>>> In a local copy change line 91 from
>>>
>>>   \def\zw at isbnfont{\usefont{OT1}{phv}{mc}{n}\fontsize{\zw at isbnfsize
>>> }{\zw at isbnfsize}\selectfont}}
>>>
>>> to
>>>
>>>   \def\zw at isbnfont{\usefont{OT1}{phv}{c}{n}\fontsize{\zw at isbnfsize
>>> }{\zw at isbnfsize}\selectfont}}
>>>
>>> deleting the `m`  the interpretation of mc has changed, normally it will
>>> manage to default to the right thing with a warning but here the condensed
>>> form needs c explicitly otherwise it falls back on the  medium m and the
>>> letters are too wide.
>>>
>>> David
>>>
>>>
>>>
>>> On Wed, 9 Dec 2020 at 19:36, Paulo Ney de Souza <pauloney at gmail.com>
>>> wrote:
>>>
>>>> The small file below, used to work fine
>>>>
>>>> ----
>>>> \documentclass{report}
>>>>
>>>> \usepackage{ean13isbn}
>>>>
>>>> \begin{document}
>>>> \EANisbn[ISBN=978-80-7340-097-2]
>>>> \end{document}
>>>> ----
>>>>
>>>> used to produce a fine bar-code (and numbers on top fine) in TL-18 and
>>>> TL-19.... but in TL'20 one gets:
>>>>
>>>> [image: image.png]
>>>>
>>>> with a strange error message:
>>>>
>>>> (/usr/local/texlive/2020/texmf-dist/tex/latex/psnfss/ot1phv.fd)
>>>> LaTeX Font Warning: Font shape `OT1/phv/mc/n' undefined
>>>> (Font)              using `OT1/phv/m/n' instead on input line 6.
>>>> LaTeX Font Warning: Some font shapes were not available, defaults
>>>> substituted.
>>>>
>>>> which is different from TL-18 and TL-19:
>>>>
>>>> (/usr/local/texlive/2018/texmf-dist/tex/latex/psnfss/ot1phv.fd
>>>> File: ot1phv.fd 2001/06/04 scalable font definitions for OT1/phv.) [1]
>>>>
>>>> Can anyone shed some light on what is going on?
>>>>
>>>> Paulo Ney
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
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