Leading into the UseR 2024! Conference, we’re releasing quarto-webr v0.4.2. This release contains a number of new features and bug fixes. The most notable change is the ability to download the R history of commands executed through a new global menu in the right column and underneath Revealjs’ “Tools” menu. Additionally, we’ve added the ability to have the monaco editor switch between Quarto’s light and dark theme modes. Behind the scenes, we’ve also upgraded to webR v0.3.3 and added two new document-level options: cell-options and version. We’ve also added a number of new cell-level options to control the interactive code cell editor, such as editor-code-line-numbers, editor-word-wrap, editor-quick-suggestions, editor-max-height, and editor-font-scale. Finally, we’ve enabled non-graphical computation within a webr-r cell when OffScreenCanvas is not available, and we’ve made a number of other changes and bug fixes.

For more details on the changes, please see the news entry below

`quarto-webr` news file entry for version 0.4.2 (2024-06-24)

Breaking Changes

We’ve update the minimum Quarto requirement to 1.4.554.
- This version of Quarto is apart of the latest RStudio IDE (Version: 2024.04.0, Date: 2024-04-29).

Features

Upgraded to webR v0.3.3 (#196)
Added ability to download the R history of commands executed through a new global menu in the right column and underneath Revealjs’ “Tools” menu. (#148)
Added the ability to have the monaco editor switch between Quarto’s light and dark theme modes. (#176)

Added two new document-level options:
- cell-options specifies global defaults for {webr-r} options (#173, thanks ute!)
- version specifies what version of webR should be used. Default embedded version. (#211)
Added the editor-* class of cell-level options to control the interactive code cell editor:
- editor-code-line-numbers allows highlighting code lines in the editor window. (#204)
- editor-word-wrap allows long lines to be wrapped inside of the code cell. Default "true". (#38)
- editor-quick-suggestions enables autocomplete menu suggestions. Default "false".(#182, thanks egenn!)
- editor-max-height limits growth of the editor window. (#177, thanks ute!)
- editor-font-scale scales the code cell size relative to the page font size. Default is 1 for HTML Documents, Books, and Websites and 0.5 for Revealjs Slides. (#172 & #209, thanks ute!)
Enabled non-graphical computation within a webr-r cell when OffScreenCanvas is not available. (#155, thanks for raising it @mccarthy-m-g)
- If OffScreenCanvas is not available, we now display a Quarto warning callout at the start of the document that emphasizes only non-graphical computation is available and a gentle nudge to upgrade the web browser being used.
- The majority of modern browsers now have support for OffScreenCanvas. This previously effected users still on iOS 16 (Safari 16 and earlier).

Changes

Added a mouse over button to allow for downloading an image when generated. (#147)
Increase the minimum Quarto version requirement to 1.4.554. (#198).
Upgraded to webR v0.3.2 (#187)
Added Lua type annotations and function documentation into the Quarto extensions’ Lua filter. (#190)
Avoided distributing webr-serviceworker.js and webr-worker.js when channel-type is not service-worker. (#210)
Dynamically write webr-serviceworker.js and webr-worker.js files based on the version chosen (#212)
Updated the version of the FontAwesome from 6.5.1 to 6.5.2. (#191)

Bug fixes

Newline characters that separate options from code lines are now removed. (#217)
Prevented vertical scroll bars from always being present by modifying the adaptive container of the editor to always be at least 2 pixels greater than the editor’s content instead of being the exact amount. (#164)

Documentation

Added new editor options vignette.
Updated community examples covering quarto-webr uses in 2024 Q1 (#193).
Improve the data loading documentation page by clarifying the virtual file system usage (#201).