This commit was wrong because a reference variable can never be
re-assigned (it would change the original variable). I learn C++
pitfalls every day.
Fixes bug #11512.
This reverts commit 10e2c65835.
This is done by declaring unimplemented private copy constructor and
assignment operator.
This breaks compilation in BufferView::textMetrics, which does a copy when
inserting a TextMetrics object in the cache. Some C++11 wizardry I will not
pretend to completely understand saves the day.
See the following page for details:
https://en.cppreference.com/w/cpp/container/map/emplace
This avoids real world bugs like #11512.
This accesses the inulemcmd output param which protects specific commands
(\cite, \ref) in an \mbox.
This is needed in ulem and soul commands, since their complex
detokenization makes such commands (who produce multiple words via local
assignment) fail.
So now it is possible to properly support ulem and soul via
[inset]layout
Fixes a case reported in #9404
Different behaviour in regexp{..} for 'İ' and 'ß':
1.) lowercase routine for 'İ' gives 'İ', so that if we are searching
while ignoring case, the string '\dot{I}' is converted to '\dot{i}'.
In this case we have to change it to 'İ' (instead of 'i', as one would expect).
2.) If 'ß' is inserted via keybord on fresh created regexp box it appears as \lyxmathsym{ß},
if pasted from the lyx-screen it appears as \text{ß}
Fixes: #11508
Now there is the opposite case which needs to be addressed:
If no translation is available for a shortcut in a non-latin-scripted
document, we need to switch the language to English.
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.
From Günter:
> OK, so in TL18 the Ukrainean "auto-date" (7 березня 2019 р.) fails with
> PDF (XeTeX) and DVI (LuaTeX) but not PDF (LuaTeX).
> Strange. Feel free to invert.
Babel provides the \textlatin macro to ensure Latin letter ASCII characters are
output as Latin letters.
Instead of 8 different definitions for the several variants of the macro definition,
wrappers are individually added if required and available.
