On Wed, Mar 09, 2016 at 07:40:34PM +0000, Guenter Milde wrote: > On 2016-03-09, Scott Kostyshak wrote: > > > [-- Type: text/plain, Encoding: quoted-printable --] > > > On Sat, Mar 05, 2016 at 09:36:43PM +0000, Guenter Milde wrote: > > >> After all, this is a know upstream bug, not a "real" LyX issue (although > >> LyX > >> may add a workaround as suggested in #8035). > > > Do you have a link to the upstream bug report? > > As said in #8035, this is no "official" bug, there is no report and I don't > know whether the polyglossia people would say it's a feature... > > > So to make sure I understand, it would not be helpful if I sent an email > > to the TeX Live list with a minimal example of a document that succeeded > > before the update and now fails? > > Not really. It it only fails with some fonts - actually only with some > versions of fonts, to it is hard to reproduce. Your minimal example may work > at some place and fail at another one. (Just like our tests did.) > > Also, it is not a new problem but a long standing issue. > > So, what is the problem: > > 1. LaTeX reports missing characters as a *warning*, not an error. > > 2. Polyglossia reports an *error*, if > > * a (non-Latin) script is required by a language used in the document > * but the fontspec-configured font does not contain a "supports script > ..." flag. > > > Test 1 is reliable and important (data loss): > * LyX converts the warning into an error. (Fixed) > > Test 2 is unreliable: > * some fonts support scripts without the tested tag > * some fonts partially support a script > (e.g. a font may say: Greek is supported but lacks accented > characters in the "Greek Extended" block. On the other hand, Latin > Modern contains capital Greek letters but not small ones.) > * a language may be used without any text in the default script of > this language. > > --> LyX should treat the error as a warning -> #8035 > > A possible bug report to polyglossia would suggest to issue a warning > instead of an error if a required script is not explicitely supported by the > font.
Thanks, Guenter. This really puts things into perspective for me. I updated #8035 with your clear explanation. Scott
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