QChar codepoints are 16 bit, so it is not wise to pass blindly a
char_type value to the QChar constructor.
Use the already defined isSpace() helper tht takes care of this issue.
Related to #12519, which is only known to bite with Qt6 for now; this
bug is thus theoretical in 2.3.
The minimal vamue is set to 10%, let's set the max to 1000%. This
avoids crashes when characters are too large.
The code is refactored to be more compact and the tests are more precise.
Fixes bug #12452.
(cherry picked from commit 5259b6ba62)
Autoconf 2.71 now show all warnings. Instead of cherry picking the 2.4
patch, the choice was made to apply autoupdate directly.
Additionally, AC_INIT now clearly indicates that automake >= 1.14 is required.
In case of path names for external files containing symbolic links the real path
and the logical path name may be different for the same file or directory.
LyX is using QDir::tempPath() to create the path name of the temporary directory.
The Qt implementation is free to return the logical or the real path name here and
it happens to be different for various platforms and versions.
The most stable and clean solution is to use the real path name consistently.
(cherry picked from commit f2f861f017)
LyX relies on a a backing store to draw when running under macOS or
Wayland, because Qt arbitrarily overwrites parts of the workarea
before we paint (and we paint only the parts that need to be painted).
However it seems that this is also necessary on X11 when the WM theme
is translucid. Since there is no way that I know of to detect this
situation, this patch adds a LyXRC setting to manually select this
drawing strategy.
Note that using a backing store is not always a good solution, since
this disables subpixel aliasing.
At this point there is no UI for the variable.
Fixes bug #12119
(cherry picked from commit c213eb7f75)
(cherry picked from commit 1ed9257c6d)
