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The (full path to) the command ‘tidy’ to be used for HTML validation can be set by environment variable ‘R_TIDYCMD’.
‘tar(., files=*)’ now produces the warning about invalid uid or gid of files correctly, fixing PR#18344, reported by Martin Morgan.
‘tk_choose.files()’ with ‘multi=FALSE’ misbehaved on paths containing spaces (PR#18334) (regression introduced in R 4.0.0).