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Avoid swapping a cell with itself
Gcc STL debugging feature asserts when swapping an object with itself. This happens in some cases with math grids that have only one column. A quick review of other uses of swap() in the code base did not reveal any other dubious case. Fixes bug #9902.
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@ -1194,7 +1194,8 @@ void InsetMathGrid::doDispatch(Cursor & cur, FuncRequest & cmd)
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// split cell
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splitCell(cur);
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swap(cell(cur.idx()), cell(cur.idx() + ncols() - 1));
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if (ncols() > 1)
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swap(cell(cur.idx()), cell(cur.idx() + ncols() - 1));
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if (cur.idx() > 0)
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--cur.idx();
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cur.pos() = cur.lastpos();
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@ -83,6 +83,8 @@ What's new
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- Fix crash when unfolding/copying macros containing other macros (bug 9490).
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- Fix crash when inserting a line in multline math environment (bug 9902).
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- Fix automatic insertion of longtable captions (bug 9692).
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- Fix setting of nested minipage via the dialog (bug 8716).
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