In order to perform a conversion of graphic format LyX generates
a python script containing the path of the original file to convert.
While Python2 needs the file in the native encoding of the OS, in
Python3 the encoding has to strictly be how announced by the first
line of a script, in our case utf-8.
Note that there is also a vector parameter that is passed by value.
However it is modified as a local copy and I do not want to change
this now.
Spotted by coverity.
The problem is caused by removing temporary aux, etc, files while
we are in the process of exporting. As Jürgen suggested, we really
do not need to remove these files until we are preparing to export:
They are not used internally. So now we just schedule the removal
and do it then.
colswitch was checking for oldstyle instead of normalcolor
to see if we need \normalcolor, which lead to appearence
of \color{none} in some cases, but "none" is not a known
color.
Instead of displaying the complete path, display the file name
first and then the path enclosed in parenthesis.
In this way files with same name but different path can still be
distinguished and, at the same time, files with different names
but same path are more easily spotted in case the complete path
is truncated by file managers.
While it is not necessary to run validate() on insets that do not
produce output (yellow notes and disabled branches), it has to be done
for previewing, since a construct inside the inset may require some
support.
This is done in two steps:
1. in PreviewLoader::dumpPreamble, indicate that a preview is being
prepared. It is not clear why the `for_preview' boolean was not set
before.
2. in Inset(Branch|Note)::validate, always call the parent's validate
method when previewing.
It should have been possible to move the code from 2. to
InsetText::validate, but the weird code in handling
InsetNoteParams::Comment in html makes it difficult.
It is not clear whether this feature was once documented and used (it
would have been 20 years ago).
It is mostly disable now, but there was a remaining bit that is
annoying now.
I'll try to restore this later.
