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A general description is here.
‘abbreviate()’ has more support for multi-byte character sets - it no longer removes bytes within characters and knows about Latin vowels with accents. It is still only really suitable for (most) European languages, and still warns on non-ASCII input.
‘abbreviate(use.classes = FALSE)’ is now implemented, and that is more suitable for non-European languages.
‘libcurl’ connections signal errors rather than retrieving HTTP error pages.
‘libcurl’ connections signal errors rather than retrieving HTTP error
pages.
‘abbreviate()’ did not give names to the return value if ‘minlength’ was zero, unlike when it was positive.
Help for ‘which.min()’ is now more precise about behavior with logical arguments. (PR#16532)