In python 3 the colors need to be strings and not bytes:
This was the equivalent of
>> print("%s" % b"1")
"b'1'"
since the colors were bytes the call to dvipng was something like
dvipng -Ttight -depth -height -D 115 -fg "b'rgb 0.937255 0.941176 0.945098'" -bg "b'rgb 0.137255 0.149020 0.160784'" "lyxpreviewxBJEqm.dvi"
Note the "b'rgb after both -fg and -bg that wrecked havoc and thus dvipng failed. That was the difference between python2 and python3 calls.
The "Rows & Columns" optional submenu is more easily accessible in
the math context menu rather having to navigate to the "Edit" menu.
All possible accelerators are already taken, so use the space bar.
Same for BackTab. The outline-in was originally (31398779)
introduced to the command-sequence at the end. Probably it was
placed at the end to be conservative (i.e., so that it would only
change behavior where there was a no-op before).
This fixes#11576.
Following the suggestion in the Babel-Azerbaijani documentation,
we use the glyphs from the Cyrillic fonts for the Latin
text character. This fits better than IPA fonts (assuming there are matching
Latin and Cyrillic fonts specified) and also provides bold etc.
Latin Modern works fine with Japanese.
If "lmodern" is set for \font_roman the "lmodern.sty" package sets
sans-serif and teletype to Latin Modern fonts as well.
Therefore, \font_sans and \font_teletype are better left as "default"
(less preamble code) in the LaTeX source).
The "outer" language of the table was set to English leading to wrong output
(swapped columns and words with non-TeX fonts, wrong characters with TeX-fonts).
The algorithm in [c9be8bff74b233/lyxgit] did not
account for layout nesting. As a result, some parentheses
were swapped in English text parts
(e.g. around "(for Linux)" in he/Intro.lyx).
AsBabelOptions was introduced 2010 in [cc5dd37a2a05/lyxgit].
Since the re-orgianization and opening of the Babel package to
"contributed" language definitions in March 2013, it is no longer required.
Clean up after Part 1 [1361f1a45f23/lyxgit].
PDF outline improves with unicode/utf8 (although some chars still wrong).
Math: ERT for umlauts no longer required (now force-converted with unicodesymbols)
Thai works fine with LuaTeX, TeX-fonts and auto-legacy input encoding.
Remove obsolete preamble code,
we now load "fontenc" with Japanese documents by default.
