Convert Titles to Title Case


Convert a character vector to title case, especially package titles.





a character vector.


This is intended for English text only.

No definition of‘title case’ is universally accepted: all agree that ‘principal’ words are capitalized and common words like ‘for’ are not, but not which words fall into each category.

Generally words in all capitals are left alone: this implementation knows about conventional mixed-case words such as ‘LaTeX’ and ‘OpenBUGS’ and a few technical terms which are not usually capitalized such as ‘jar’ and ‘xls’. However, unknown technical terms will be capitalized unless they are single words enclosed in single quotes: names of packages and libraries should be quoted in titles.


A character vector of the same length as text, without names.

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