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‘seq()’ and ‘seq.int()’ give more explicit error messages if called with invalid (e.g. ‘NaN’) inputs.
‘model.matrix()’ now works with very long lhs names (more than 500 bytes). (PR#15377)
‘integrate()’ reverts to the pre-2.12.0 behaviour. (PR#15219)
‘strptime()’ now handles ‘%W’ fields with value 0. (PR#15915)
R is now better protected against people trying to interact with the console in startup code. (PR#15325)