Remove all trace of Qt4 support. The different elements have been
considered carefully before removal.
The only changes that need to be done concern Windows and macOS
compilation instruction and will need to be taken care of by the
respective maintainers before prerelease.
The file TODO.killqt4 lists what remains to be done.
We now allow the user to cancel the background process at any point
(via the red "x" in the status bar or Document > Cancel Export), so
we do not need to poll the user with the dialog.
The patch works by setting timeout to "-1" which is treated as a
special value to disable the poll.
Fix (by obviation) #12531 and #9953, which were about the dialog.
This is a convenience function for indexing. It adds a copy of the
index inset under cursor after any word in the buffer that is equal
(case-insensitively) to the word preceding the index inset.
The function can be easily used to generate bad indexes (and I warn
about that in the UserGuide), but if used with care, it can also be
extremely convenient.
- Check the state of the synchronize TeX output option of the document to enable or disable the LFUN for forward-search.
- write synctex macro to TeX source not only for PdfLaTeX
This stores its argument, the currently selected text or the word under
cursor in the search cache that is used by word-find[-backward|-forward]
if no argument is given to those.
Prerequisite for a feature apparently expected on the Mac.
Most of the RtL icons that we provide are simply mirrors of the LtR ones.
Therefore let the code do that by default if no +rtl icon is found.
The only RtL icon left for now is for "layout Enumerate" (notice the
numbers in it).
Also remove useless getPixmap wrapper and several old bidi_xxx icons
that were forgotten in previous patch.
