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The return value from ‘ks.test()’ now has class ‘c("ks.test", "htest")’ - packages using ‘try()’ need to take care to use ‘inherits()’ and not ‘==’ on the class.
Errors in re-building vignettes (unless there are LaTeX errors) are reported by ‘R CMD check’ as ‘ERROR’ rather than ‘WARNING’ when running vignettes has been skipped (as it frequently is in CRAN checks and by ‘--as-cran’).