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Wolfgang Jenkner authored
* lisp/calc/calc-units.el (math-units-in-expr-p) (math-single-units-in-expr-p, math-find-compatible-unit-rec) (math-extract-units): Handle the `neg' operator. (Bug#19582) * test/automated/calc-tests.el (calc-tests-equal, calc-tests-simple): New functions. (test-calc-remove-units, test-calc-extract-units) (test-calc-convert-units): New tests.
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