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Owen Leibman
9552172b85
CALCULATION_REGEXP_CELLREF is not sufficiently robust. It treats some perfectly legal defined names, e.g. A1A, as cell refs. When the Xlsx Writer tries to save a worksheet which uses such a name in a formula in a cell, it throws an exception. The new DefinedNameConfusedForCellTest is a simple demonstration. The Regexp has been changed to ensure the name starts on a Word boundary, and to make sure it is not followed by a word character or period. This fixes the problem, and does not appear to cause any regression problems in the test suite. Closes #1263