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The methods of ‘napredict()’ and ‘naresid()’ for ‘na.action = na.exclude’ fits did not work correctly in the very rare event that every case had been omitted in the fit. (Reported by Simon Wood.)
‘weighted.residuals(drop0=TRUE)’ returned a vector when the residuals were a matrix (e.g. those of class ‘"mlm"’). (Reported by Bill Dunlap.)
‘identical’ could in rare cases generate a warning about non-pairlist attributes on CHARSXPs. As these are used for internal purposes, the attribute check should be skipped. (Reported by Niels Richard Hansen).
If the filename extension (usually ‘.Rnw’) was not included in a call to ‘Sweave()’, source references would not work properly, and the ‘keep.source’ option failed. (PR#14459)
‘combn(n, m)’ now behaves more regularly for the border case m = 0. (PR#14473)