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downlit (development version)

downlit 0.4.4

  • Use simpler parsing algorithm for R 4.0, which avoids crash with certain UTF-8 characters (#189).

downlit 0.4.3

  • Fix for upcoming R-devel (#169).

downlit 0.4.2

  • highlight() no longer errors if a package imputed to have been attached isn't installed.

  • Correctly link requireNamespace(MASS) (#151).

downlit 0.4.1

Syntax highlighting

  • Supports new base pipe |> syntax (#126).

  • Every line get its own <span> to match pandoc (#122).

  • Multi-line tokens (e.g. strings) now get a <span> per line (#139).

  • Very long strings or other tokens are no longer truncated (@dmurdoch, #128).

Auto-linkg

  • Function calls (in inline and code blocks) will no longer to non-function topics (#135).

  • Re-exports detection no longer relies on name of .Rd file (#134).

  • Link to correct topic with ::() and utils::help() (@IndrajeetPatil, #131).

  • Generate correct link for Bioconductor vignettes (@zeehio, #145)

downlit 0.4.0

Syntax highlighting

  • Messages, warnings, and errors now get a much more minimal style. Messages are styled the same way as output; and warnings and errors only style the "Warning" or "Error" text. This makes these types of output easier to read, and easier for package developers to style themselves.

  • Messages, warnings, and errors now retrieve their text using conditionMessage(), which supports more advanced types of conditions (@davidchall, #100).

  • The overall structure of the syntax highlighting has been overhauled. Now each line is wrapped in a <span> with class r-in (input code), r-out (output printed to console), r-plot (plots), r-msg (messages), r-wrn (warnings), and r-err (errors). Additionally, the prompt (#>) is wrapped in a <span class="r-pr">. Altogether, these changes should give much more flexibility for styling with CSS (#90).

  • ANSI escapes no longer generate invalid HTML (#79).

  • Changes to better support for HTML widgets and rgl in pkgdown (@dmurdoch, #78). In particular, evaluate_and_highlight() now returns an additional attribute containing all extra dependencies needed to render the returned HTML.

Auto-linking

  • Packages attached when you call library(package) (including by the tidyverse), are now taken into account when autolinking (#87).

  • In code blocks, custom infix operators are now autolinked (#89). In inline code, infix operators are no longer autolinked; this lead to too many false positives. You can still link with (e.g.) ?"-" (#86).

  • Inline calls with arguments (e.g. foo(1, 2)) are no longer auto-linked, as intended and documented (#82).

  • Autolinking vignette(foo, package = "pkg") no longer errors if pkg is not installed (#85).

  • Unusual help calls (e.g. help(a$b)), no longer generate errors (#77).

  • Rare warning about incomplete final line in autolink_url("pkgname::foo") is now suppressed (@dmurdoch, pkgdown#1419).

  • href_package() is now exported (#103).

  • Auto-linking is more likely to succeed when the remote package is not installed as downlit now looks for the URL using tools::CRAN_package_db() for CRAN packages, and and available.packages() for packages installed from non-CRAN repos (@ARawles, #108).

  • Functions in HTML <summary> elements are no longer autolinked (@gadenbuie, #105).

downlit 0.2.1

  • When auto-linking vignette(foo), downlit now looks for a vignette named foo in the packages it knows to be attached (#61).

  • Can now force highlighting of any <pre> by wrapping it inside a <div> with class = "downlit". This is useful in cases where it may otherwise be hard to set the class of the <pre>.

  • In comments, \u2029 is converted to \033 to make it possible to preserve ANSI escapes when passed through xml2.

  • No longer errors on library calls with named but empty arguments.

downlit 0.2.0

  • Autolinking can use metadata stored in package itself with pkgdown setting deploy.install_metadata; this is useful for packages that only have private websites (@matthewstrasiotto, #29)

  • Autolinking guesses reference and article urls for pkgdown sites that haven't set url (@krlmlr, #44).

  • R6 classes are autolinked when a new object is created i.e. in r6_object$new(), r6_object will link to its docs (#59, @maelle).

  • R6 methods are no longer autolinked as if they were functions of the same name (#54, @maelle).

  • classes_pandoc() and classes_chroma() have been thoroughly revieweed to produce syntax highlighting as similar as possible to RStudio.

  • downlit_html_path() has a more flexible XPath identifying R code blocks, and a classes argument (#53, @maelle, @cderv)

  • Trailing / are no longer stripped from URLs (#45, @krlmlr).

  • Removed extra newline in <pre> output (#42, @krlmlr).

downlit 0.1.0

  • Added a NEWS.md file to track changes to the package.