Previous code tried to hack some tricks to restore whitespaces after
trimming them according to the xml:space attribute value. But it was
wrong in multiple ways.
1. The collapsed space must stay in the block where its start was.
When a block ended with a space, then trimming the space from it,
and adding to a next block, can change the size of the space.
2. The shift of a line (e.g., specifying x and y values) doesn't end
the logical line. A space before such a shift must be kept by the
same rules, as if there weren't a shift.
3. A block with xml:space="preserve" is treated as if it consists of
all non-whitespace characters, even if its leading or trailing
characters are spaces. I.e., a trailing space in a block before,
or a leading space in a block after, should be collapsed into a
single space, not removed - even when the space-preserving block
itself is made invisible.
Change-Id: Ic778d1e9d6b9d0c342ea74ad78d44bb47bc8d708
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/166239
Tested-by: Mike Kaganski <mike.kaganski@collabora.com>
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
Mike Kaganski
6e6081b340