This assures that refs to existing labels are not being touched if a new label with a duplicate name is created, and the name then changed by the duplicate checker.
Branch candidate.
Fixes 2 issues:
1. LyX uses for a decimal alignment a multicolumn and having for a cell a multicolumn _and_ a multirow is invalid LaTeX.
2. It was impossible to unset a decimal alignment via the context menu or toolbar button.
This is the same protection used for \cite{}. Although "ulem" commands
don't strictly need this protection with \ref{} and friends, this helps
when one wants to use another package souch as "soul".
Indeed, ulem's \uline{} doesn't hyphenate words, while soul's \ul{} does,
and thus the output is much nicer.
With this patch, replacing ulem with soul is as simple as adding
\usepackage{soul}
\renewcommand{\uline}[1]{\ul{#1}}
to the preamble, without worrying about manually enclosing in \mbox the
\ref commands. In any case, the output from ulem remains unchanged.
Another possibility offered by soul is that of typesetting as
"yellow highlighted" the underlined text. This is achieved by adding
\usepackage{color,soul}
\renewcommand{\uline}[1]{\hl{#1}}
to the preamble.
This commit does a bit more than fix selection, since it saves the full cursor state
in the undo stack. This means that undo now restores:
* the selection
* the current font
* transient mark (shall we keep this one?), logical position...
In order to do that, it introduces an intermediate class between Cursor and DotIterator: CursorData.
The new inheritance diagram is thus
DocIteraator -> CursorData -> Cursor
CursorData contains all the members of Cursor that define the current position, but not the stuff
related to current view of dispatch mechanism. It may make sense in the future to move members
between CursorData and Cursor and to move some member functions to CursorData.
Now UndoElement uses CursorData for cur_before and cur_after, but not for the cell. The undo API uses
also CursorData instead of DocIterator.
If someone can tell me how I can tell QtCreator to actually use tabs, not spaces, I would be most grateful (yes, I have set Tab Policy to Tabs Only in Prefs)
The button text of InsetInclude insets shows whether the child document is
included or excluded from compilation. Changing this for a child document
in the document settings does not get reflected on screen. This patch
updates the button text on the updateBuffer() call.
We want the key as id, not the label (which is optional).
We also need a kind of namespace for the citation ids.
We should also clean the id tag before using it.
