Am Freitag, 21. Juli 2017 um 22:08:48, schrieb Guenter Milde
<mi...@users.sf.net>
> On 2017-07-20, Kornel Benko wrote:
> > Am Mittwoch, 19. Juli 2017 um 22:23:32, schrieb Kornel Benko
> > <kor...@lyx.org>
> >> Am Mittwoch, 19. Juli 2017 um 19:48:49, schrieb Guenter Milde
> >> <mi...@users.sf.net>
> >> > On 2017-07-19, Kornel Benko wrote:
> >> >
> >> > > [-- Type: text/plain, Encoding: 7bit --]
> >> >
> >> > > Am Mittwoch, 19. Juli 2017 um 15:00:16, schrieb Kornel Benko
> >> > > <kor...@lyx.org>
> >> > >> So, maybe better we could omit \textcompwordmark in mono fonts.
> >> >
> >> > > This patch works for me. It uses vphantom{}, but only between '<<' and
> >> > > '>>'.
> >> >
> >> > See my other post for alternatives solving the "missing character" error
> >> > with Unicode fonts for \textcompwordmark.
>
> >> I have read it. I understand the usage and I don’t insist on removing
> >> textcompwordmark any longer.
>
> >> I don't insist. I would insist on removing textcompwordmark in mono
> >> fonts, but did not see an easy way.
>
> > It turned out, it is easy.
>
> But it is still wrong:
>
> * It is LyX policy to keep LaTeX output stable (unless it turns out to be
> wrong).
>
> * \textcompwordmark is the correct LaTeX internal character
> representation (LICR) for u200C (zero width non joiner, ZWNJ).
OK
> If some fonts are missing this character this is a bug in the fonts or
> in the code calling this missing character (here tu1enc.def in latex/base/).
>
> * The workaround should fix the command, not use a different
> one. Power users are then still able to override our workaround with
> their own re-definition of \textcompwordmark.
Mark, that the change is done only for mono fonts.
>
> * Actually, in the case of ZWNJ, just dropping the missing character results
> in correct output.
> --> We don't even need to add a workaround, if we remove
> the "warning to error conversion for missing characters" for this case.
>
Please not now. Who may do the work?
>
> > Output for desired ligatures with the attached patch is:
> > "\\vphantom{}" if mono mono-fonts
> > "\\textcompwordmark " else.
>
> This will only help for documents using DejaVu. OTOH, it is not required
> for Free* and no help for LatinModern.
>
No, DejaVu is selected because of endless latex loop, nothing to do with
\\textcompwordmark
>
> ...
>
> > diff --git a/lib/doc/de/Additional.lyx b/lib/doc/de/Additional.lyx
> > index 5ccd07b..539aa6d 100644
> > --- a/lib/doc/de/Additional.lyx
> > +++ b/lib/doc/de/Additional.lyx
> > @@ -41,9 +41,9 @@ shapepar
> > \language_package default
> > \inputencoding auto
> > \fontencoding global
> > -\font_roman "lmodern" "default"
> > -\font_sans "lmss" "default"
> > -\font_typewriter "lmtt" "default"
> > +\font_roman "lmodern" "DejaVu Serif [bitstream]"
> > +\font_sans "lmss" "DejaVu Sans [bitstream]"
> > +\font_typewriter "lmtt" "DejaVu Sans Mono [bitstream]"
> > \font_math "auto" "auto"
> > \font_default_family default
> > \use_non_tex_fonts false
>
> This fixes the test case but not the problem.
This fixes the lyx file which we provide.
> The correct fix is either an exception to the "error-on-missing-chars"
> feature, or providing the workaround (re-defining to the original default):
>
> % ZWNJ missing in many Unicode fonts:
> \DeclareTextCommand{\textcompwordmark}{\UnicodeEncodingName}{%
> \leavevmode\kern\z@}
>
> in LaTeXFeatures.cpp and "require" it in case \textcompwordmark is used in
> documents with "non-TeX fonts" if configure detects TeXLive16 or later.
>
> Günter
Kornel
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