Xe/LuaTeX convert \AA to the deprecated character u212B (which is missing
in the default LatinModern font) instead of the recommended u00C5.
Also fix some of the "missing character" errors in Math.lyx if compiled with
Xe/LuaTeX which were caused by the replacement of \AA with literal u212B characters
in math-insets due to the old definitions in unicodesymbols.
Update the minimal example for failures of Math.lyx with system fonts.
New bug in TeXLive 18.
Missing characters with XeTeX and wrong characters with LuaTeX.
Also:
* Remove spurious (Latin) characters from uk/Intro.lyx
* "wrong-output" tag for Cyrillic documents with XeTeX and TeX fonts.
Prevents wrong or missing characters with LuaTeX and 8-bit fonts.
Also "uninvert" the corresponding test case and two other
no longer failing "unicodesymbols" exports.
If Document>Settings>Language>Encoding is set to any value except "auto" or "default", we
expect the whole document to use this encoding. Wiht encodings from the CJK package, this means
one big "CJK" environment and no encoding switches.
Characters that are not handled by the CJK package need to be "forced" in lib/unicodesymbols.
This is completed for "euc-cn", the others will follow.
A \clearpage command issued right before \end{CJK} is recommended by the
package author to prevent any un-processed CJK chars outside the
\begin{CJK} and \end{CJK} scope. Otherwise, TOC, header, footer,
and may contain CJK chars but get processed outside the CJK environment scope.
Tha new dedicated export test fails without the fix.
The textcomp Unicode support file "ts1enc.dfu" defines 0x204E Low Asterisk
as \textasteriskcentered. LyX should follow suit.
The ASTERISK OPERATOR (correctly) maps to the same macro,
the "deprecated" tag marks the upstream mapping as preferred choice.
The Thai tis620-0 input encoding is supported via the inputenc "plug in"
(data) file tis620.def from https://ctan.org/pkg/babel-thai.
We can handle it like the other contributed input encodings, e.g.,
Greek (ISO 8859-7) and the several Cyrillic encodings from
http://www.ctan.org/pkg/latex-cyrillic.
Under TeXLive 2018, the input encoding defaults to utf8, if there is no call to
inputenc. The added test file fails without the patch but compiles fine, if the
file "tis620.def" is present in the TEXPATH.
utf8-plain (Unicode (utf8 XeTeX)) is a power-user setting
for the input encoding with two use cases:
a) setup of system fonts or
b) setup of input encoding supportuser preamble
in the document class or user preamble.
The test file is an example for use case b.
Don't insert empty line when translating QuoteInsets to literal
quotes.
Fix regexp pattern in re/convert_dashligatures.
Adjust logic in re/convert_dash(ligatur)es.
