As the xcb_send_event man page [1] states,
In order to properly initialize these bytes, we allocate 32 bytes
even though we only need less for an xcb_configure_notify_event_t
This commit fixes the following Valgrind error, which could be
triggered by selecting a letter in LyX:
==12698== Syscall param writev(vector[...]) points to uninitialised byte(s)
==12698== at 0x61F578D: __writev (writev.c:26)
==12698== by 0x61F578D: writev (writev.c:24)
==12698== by 0x4A83BFC: ??? (in /usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0)
==12698== by 0x4A83FD0: ??? (in /usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0)
==12698== by 0x4A84246: ??? (in /usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0)
==12698== by 0x4A84ACB: xcb_flush (in /usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0)
==12698== by 0x17C8F06: lyx::frontend::GuiApplication::nativeEventFilter(QByteArray const&, void*, long*) (GuiApplication.cpp:3366)
==12698== by 0x5AA4EEE: QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) (qabstracteventdispatcher.cpp:484)
[1] https://www.x.org/releases/current/doc/man/man3/xcb_send_event.3.xhtml
/cvs/lyx/lyx-devel/src/frontends/qt/TocModel.cpp:356: warning: loop variable 'toc' has type 'const pair<std::string, shared_ptr<lyx::Toc> > &' (aka 'const pair<basic_string<char>, shared_ptr<vector<lyx::TocItem> > > &') but is initialized with type 'const std::pair<const std::__cxx11::basic_string<char>, std::shared_ptr<std::vector<lyx::TocItem, std::allocator<lyx::TocItem> > > >' resulting in a copy
/cvs/lyx/lyx-devel/src/frontends/qt/TocModel.cpp:356: use non-reference type 'pair<std::string, shared_ptr<lyx::Toc> >' (aka 'pair<basic_string<char>, shared_ptr<vector<lyx::TocItem> > >') to keep the copy or type 'const std::pair<const std::__cxx11::basic_string<char>, std::shared_ptr<std::vector<lyx::TocItem, std::allocator<lyx::TocItem> > > > &' to prevent copying
Easier just to use 'auto'.
Three backslashes are needed before a LaTeX command, not one. Before
this commit, the code gave the following error with Python >= 3.6:
re.error: bad escape \g at position 29
This error was introduced with Python 3.6, as documented [1] by the
following line of documentation:
Changed in version 3.6: Unknown escapes in pattern consisting of
'\' and an ASCII letter now are errors.
Although previous Python versions did not give an error, the regular
expression was not working as intended: for example, the "\\n" in
"\\newcommandx" would be interpreted as a new line.
[1] https://docs.python.org/3.6/library/re.html#re.sub
There are two techniques that I know of for forcing the direction of a
string, regardlessly of whether its contents is naturally LtR, RtL or
undecided.
1/ The unicode LTR/LTR override characters. This is supposed to be the
clean way, however, it does not seem to work with Qt 5.14 (see
#11691).
2/ The undocumented QTextLayout::setFlags method. This is used
internally and allows to pass the (undocumented) flags
Qt::TextForceRightToLeft and Qt::TextForceLeftToRight. This was
used until we had issues with Qt 5.11 (see #11284).
In order to get the best of both worlds, this patch allows to enable
those two methods separately, and actually enables both at the same
time by default!
(hopefully) Fixes bug #11691.
