Fix cases where lyx2lyx adds changes with every round cycle
uncovered by recent ctest change.
Add optional `delete` argument to parser_tools.get*value():
If True, delete the matching line.
More efficient "allowbreak" con/reversion.
Remove the duplicated \# -*- coding: utf-8 -*-
lines that show in the third line.
As far as I know they are not used, the first line though is used
by python and text editors (emacs, vi & co) to get the file encoding.
That will also work in the second lines (because of the shebang convention)
but not in other lines.
Remove trailing whitespaces.
patch. Also fix some escaping problems (\end instead of \\end).
My testing revealed some other problems with this routine: stray
\noindent tags popping up here and there. I don't have time to fix
it right now but will try to come back to it.
Most of the changes are related with dictionaries returning views instead of
lists.
xrange -> range (since xrange is gone in python 3)
The code that is special to support both python 2 and 3 is enclosed in a comment
\# Provide support for both python 2 and 3
and
\# End of code to support for both python 2 and 3
And so later it can be removed safely when python 2 is no longer supported.
The lyx2lyx conversion for format 352 was incomplete: It should have been
added the \use_indices setting, but it relied on the fact that the default in
LyX for missing \use_indices is the same as the old format without that
setting used. However, the default might change in the future, and later
lyx2lyx conversions rely on that setting as well.
lyx2lyx sets all new math packages to off when converting from old formats.
This is correct if any command which would cause an automatic package loading
exists in the document. However, it is wrong if no command exists: This leads
to problems if later a command is added (bug #9069), which is especially
annoying for templates.
The fix consists of two parts:
1) convert_use_package() considers now the used commands like
revert_use_package(), and uses them to decide whether to set the package to
auto or off.
2) convert_undertilde() and revert_undertilde() use a slightly adjusted copy of
convert_use_package() and revert_use_package(), so that the bug is also
fixed for undertilde. We cannot use the latter functions directly, because
of "\usepackage undertilde" vs. "\use_undertilde".
When doing the lyx2lyx round trip of the 2.0.8 user guide from format
413 -> 474 -> 413 you get an invalid document, because the math packages
mhchem and undertilde are incorrectly converted.
It turned out that the old reversion code did only work for particular
package oderings. The new one works for abitrary sorted packages.
