knitr Files

NEW FEATURES

• In-chunk references of the form <<label>> can be disabled via the chunk option ref.chunk = FALSE now (thanks, @jennybc @gadenbuie, [#2360]).

• Added support for fig.alt for LaTeX output, i.e., using \includegraphics[alt={alt text}] (thanks, @capnrefsmmat, [#2378]).

• The environment in which code chunks are evaluated can be changed by passing a custom environment to knit_global() now (thanks, @abhsarma, [#2358]).

BUG FIXES

• In-chunk references of the form <<label>> should not be resolved if label is not found in the document (thanks, @jennybc @gadenbuie, [#2360]).

• The chunk option autodep = TRUE stopped working due to a regression from [#2321] (thanks, @heavywatal [#2344], @atusy [#2377]).

• asis_output() was not passed to the output hook (thanks, @cderv, [#2332]).

• Avoid partial matching of the Date/Publication field when generating citation('knitr'), otherwise R will emit a warning when options(warnPartialMatchDollar = TRUE) (thanks, @fkohrt, [#2361]).

MAJOR CHANGES

• Unbalanced chunk delimiters (fences) in R Markdown documents are strictly prohibited now.

• For code chunks with error = TRUE, purl() and hook_purl() will wrap the code in try({...}) (thanks, @bastistician [#2338], @jeroen [#2368]).

MINOR CHANGES

• If a character value is passed to the chunk option message or warning, it will be coerced by as.logical(), e.g., a character string "NA" will be coerced to NA (thanks, @cderv, [#2375]).

• Issue a warning when the chunk option dependson receives an invalid value (thanks, @otoomet, [#2376]).

• Changed the format of the reference card from PDF to HTML so building this package will not require LaTeX. See vignette('knitr-refcard', package = 'knitr').

• Switched the vignette engine from knitr to litedown::vignette for some package vignettes.